74HC244_05 [NXP]
Octal buffer/line driver; 3-state; 八路缓冲器/线路驱动器;三态
| 型号： | 74HC244_05 |
| 厂家： | 
NXP |
| 描述： | Octal buffer/line driver; 3-state |
| 文件： | 总22页 (文件大小：127K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
74HC244; 74HCT244
Octal buffer/line driver; 3-state
Rev. 03 — 22 December 2005
Product data sheet
1. General description
The 74HC244; 74HCT244 is a high-speed Si-gate CMOS device and is pin compatible
with Low-power Schottky TTL (LSTTL).
The 74HC244; 74HCT244 has octal non-inverting buffer/line drivers with 3-state outputs.
The 3-state outputs are controlled by the output enable inputs 1OE and 2OE. A HIGH on
nOE causes the outputs to assume a high-impedance OFF-state. The 74HC244;
74HCT244 is identical to the 74HC240; 74HCT240 but has non-inverting outputs.
2. Features
■ Octal bus interface
■ Non-inverting 3-state outputs
■ Complies with JEDEC standard no. 7A
■ ESD protection:
◆ HBM EIA/JESD22-A114-C exceeds 2000 V
◆ MM EIA/JESD22-A115-A exceeds 200 V
■ Multiple package options
■ Specified from −40 °C to +85 °C and from −40 °C to +125 °C
3. Quick reference data
Table 1:
Quick reference data
GND = 0 V; Tamb = 25 °C; tr = tf = 6 ns
Symbol Parameter
74HC244
Conditions
Min
Typ
Max
Unit
tPHL
tPLH
,
propagation delay
nAn to nYn
VCC = 5 V; CL = 15 pF
-
9
-
ns
Ci
input capacitance
-
-
3.5
35
-
-
pF
pF
[1]
CPD
power dissipation
capacitance
per buffer; VI = GND to
VCC
74HCT244
tPHL
tPLH
,
propagation delay
nAn to nYn
VCC = 5 V; CL = 15 pF
-
11
-
ns
Ci
input capacitance
-
-
3.5
35
-
-
pF
pF
[1]
CPD
power dissipation
capacitance
per buffer; VI = GND to
(VCC − 1.5 V)
[1] CPD is used to determine the dynamic power dissipation (PD in µW):
PD = CPD × VCC2 × fi × N + ∑(CL × VCC2 × fo) where:
74HC244; 74HCT244
Philips Semiconductors
Octal buffer/line driver; 3-state
fi = input frequency in MHz;
fo = output frequency in MHz;
CL = output load capacitance in pF;
VCC = supply voltage in V;
N = number of inputs switching;
∑(CL × VCC2 × fo) = sum of outputs.
4. Ordering information
Table 2:
Type number Package
Temperature range Name
Ordering information
Description
Version
74HC244
74HC244N
74HC244D
−40 °C to +125 °C
−40 °C to +125 °C
DIP20
SO20
plastic dual in-line package; 20 leads (300 mil)
SOT146-1
SOT163-1
plastic small outline package; 20 leads;
body width 7.5 mm
74HC244DB
−40 °C to +125 °C
SSOP20
plastic shrink small outline package; 20 leads;
body width 5.3 mm
SOT339-1
SOT360-1
SOT764-1
74HC244PW −40 °C to +125 °C
TSSOP20
plastic thin shrink small outline package; 20 leads;
body width 4.4 mm
74HC244BQ
−40 °C to +125 °C
DHVQFN20 plastic dual in-line compatible thermal enhanced very
thin quad flat package; no leads; 20 terminals;
body 2.5 × 4.5 × 0.85 mm
74HCT244
74HCT244N
74HCT244D
−40 °C to +125 °C
−40 °C to +125 °C
DIP20
SO20
plastic dual in-line package; 20 leads (300 mil)
SOT146-1
SOT163-1
plastic small outline package; 20 leads;
body width 7.5 mm
74HCT244DB −40 °C to +125 °C
74HCT244PW −40 °C to +125 °C
74HCT244BQ −40 °C to +125 °C
SSOP20
plastic shrink small outline package; 20 leads;
body width 5.3 mm
SOT339-1
SOT360-1
SOT764-1
TSSOP20
plastic thin shrink small outline package; 20 leads;
body width 4.4 mm
DHVQFN20 plastic dual in-line compatible thermal enhanced very
thin quad flat package; no leads; 20 terminals;
body 2.5 × 4.5 × 0.85 mm
74HC_HCT244_3
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 22 December 2005
2 of 22
74HC244; 74HCT244
Philips Semiconductors
Octal buffer/line driver; 3-state
5. Functional diagram
1Y0
1Y1
1Y2
1Y3
1A0
1A1
1A2
2
4
6
18
16
14
12
1A3
8
1
1OE
2Y0
2Y1
2Y2
2Y3
2A0
2A1
2A2
17
15
13
3
5
7
9
2A3
11
19
2OE
mna875
Fig 1. Functional diagram
1
EN
2
4
6
17
15
13
18
16
14
12
3
18
2
1A0
1A1
1A2
1Y0
1Y1
1Y2
1Y3
2A0
2A1
2A2
2Y0
2Y1
2Y2
2Y3
16
14
12
4
6
8
5
7
9
19
11
EN
8
1
11
19
1A3
2A3
9
7
5
3
13
15
17
1OE
2OE
mna874
mna873
Fig 2. Logic symbol
Fig 3. IEC logic symbol
74HC_HCT244_3
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 22 December 2005
3 of 22
74HC244; 74HCT244
Philips Semiconductors
Octal buffer/line driver; 3-state
6. Pinning information
6.1 Pinning
74HC244
74HCT244
terminal 1
index area
74HC244
74HCT244
2
3
4
5
6
7
8
9
19
18
17
16
15
14
13
12
1A0
2Y0
1A1
2Y1
1A2
2Y2
1A3
2Y3
2OE
1Y0
2A0
1Y1
2A1
1Y2
2A2
1Y3
1
2
20
19
18
17
16
15
14
13
12
11
1OE
1A0
2Y0
1A1
2Y1
1A2
2Y2
1A3
2Y3
GND
V
CC
2OE
1Y0
2A0
1Y1
2A1
1Y2
2A2
1Y3
2A3
3
4
5
6
(1)
GND
7
8
9
001aae012
10
Transparent top view
001aae011
(1) The die substrate is attached to this
pad using conductive die attach
material. It can not be used as supply
pin or input
Fig 4. Pin configuration DIP20, SO20,
SSOP20 and TSSOP20
Fig 5. Pin configuration DHVQFN20
6.2 Pin description
Table 3:
Pin description
Symbol
1OE
1A0
2Y0
1A1
2Y1
1A2
2Y2
1A3
2Y3
GND
2A3
1Y3
2A2
1Y2
Pin
1
Description
1 output enable input (active LOW)
1 data input 0
2
3
2 bus output 0
1 data input 1
4
5
2 bus output 1
1 data input 2
6
7
2 bus output 2
1 data input 3
8
9
2 bus output 3
ground (0 V)
10
11
12
13
14
2 data input 3
1 bus output 3
2 data input 2
1 bus output 2
74HC_HCT244_3
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 22 December 2005
4 of 22
74HC244; 74HCT244
Philips Semiconductors
Octal buffer/line driver; 3-state
Table 3:
Symbol
2A1
Pin description …continued
Pin
15
16
17
18
19
20
Description
2 data input 1
1 bus output 1
2 data input 0
1 bus output 0
1Y1
2A0
1Y0
2OE
2 output enable input (active LOW)
supply voltage
VCC
7. Functional description
7.1 Function table
Table 4:
Control
nOE
Function table[1]
Input
nAn
L
Output
nYn
L
L
H
H
H
X
Z
[1] H = HIGH voltage level;
L = LOW voltage level;
X = don’t care;
Z = high-impedance OFF-state.
8. Limiting values
Table 5:
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to
GND (ground = 0 V).
Symbol Parameter
Conditions
Min
Max Unit
VCC
IIK
supply voltage
−0.5 +7
V
input clamping current
output clamping current
VI < −0.5 V or VI > VCC + 0.5 V
-
-
±20
mA
mA
IOK
VO < −0.5 V or
±20
VO > VCC + 0.5 V
IO
output current
VO = −0.5 V to (VCC + 0.5 V)
-
±35
70
mA
mA
mA
ICC
IGND
Tstg
Ptot
quiescent supply current
ground current
-
-
−70
storage temperature
total power dissipation
DIP20 package
−65
+150 °C
[1]
[2]
[3]
[3]
[4]
-
-
-
-
-
750
500
500
500
500
mW
SO20 package
mW
mW
mW
mW
SSOP20 package
TSSOP20 package
DHVQFN20 package
74HC_HCT244_3
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 22 December 2005
5 of 22
74HC244; 74HCT244
Philips Semiconductors
Octal buffer/line driver; 3-state
[1] For DIP20 package: Ptot derates linearly with 12 mW/K above 70 °C.
[2] For SO20 package: Ptot derates linearly with 8 mW/K above 70 °C.
[3] For SSOP20 and TSSOP20 packages: Ptot derates linearly with 5.5 mW/K above 60 °C
[4] For DHVQFN20 packages: Ptot derates linearly with 4.5 mW/K above 60 °C.
9. Recommended operating conditions
Table 6:
Recommended operating conditions
Symbol Parameter
74HC244
Conditions
Min
Typ
Max
Unit
VCC
VI
supply voltage
2.0
5.0
-
6.0
V
input voltage
0
VCC
VCC
+125
1000
500
400
V
VO
output voltage
0
-
V
Tamb
tr, tf
ambient temperature
input rise and fall time
−40
25
-
°C
ns
ns
ns
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
-
-
-
6.0
-
74HCT244
VCC
supply voltage
4.5
0
5.0
-
5.5
V
VI
input voltage
VCC
VCC
+125
500
V
VO
output voltage
0
-
V
Tamb
tr, tf
ambient temperature
input rise and fall time
−40
-
25
6.0
°C
ns
VCC = 4.5 V
10. Static characteristics
Table 7:
Static characteristics 74HC244
At recommended operating conditions; voltages are referenced to GND (ground = 0V).
Symbol
Tamb = 25 °C
VIH HIGH-state input voltage
Parameter
Conditions
Min
Typ
Max
Unit
VCC = 2.0 V
1.5
3.15
4.2
-
1.2
2.4
3.2
0.8
2.1
2.8
-
-
V
V
V
V
V
V
VCC = 4.5 V
-
VCC = 6.0 V
-
VIL
LOW-state input voltage
HIGH-state output voltage
VCC = 2.0 V
0.5
VCC = 4.5 V
-
1.35
VCC = 6.0 V
-
1.8
VOH
VI = VIH or VIL
-
-
-
-
-
-
-
IO = −20 µA; VCC = 2.0 V
IO = −20 µA; VCC = 4.5 V
IO = −20 µA; VCC = 6.0 V
IO = −6.0 mA; VCC = 4.5 V
IO = −7.8 mA; VCC = 6 V
1.9
4.4
5.9
3.98
5.48
2.0
4.5
6.0
4.32
5.81
V
V
V
V
V
74HC_HCT244_3
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 22 December 2005
6 of 22
74HC244; 74HCT244
Philips Semiconductors
Octal buffer/line driver; 3-state
Table 7:
Static characteristics 74HC244 …continued
At recommended operating conditions; voltages are referenced to GND (ground = 0V).
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VOL
LOW-state output voltage
VI = VIH or VIL
IO = 20 µA; VCC = 2.0 V
IO = 20 µA; VCC = 4.5 V
IO = 20 µA; VCC = 6.0 V
IO = 6.0 mA; VCC = 4.5 V
IO = 7.8 mA; VCC = 6 V
VI = VCC or GND; VCC = 6 V
VI = VIH or VIL; VO = VCC or GND
VI = VCC or GND; IO = 0 A;
-
-
-
-
-
-
-
-
0
0.1
V
0
0.1
V
0
0.1
V
0.15
0.26
0.26
±0.1
±0.5
8.0
V
0.16
V
ILI
input leakage current
-
-
-
µA
µA
µA
IOZ
ICC
OFF-state output current
quiescent supply current
VCC = 6.0 V
Ci
input capacitance
-
3.5
-
pF
Tamb = −40 °C to +85 °C
VIH HIGH-state input voltage
VCC = 2.0 V
1.5
-
-
-
-
-
-
-
V
V
V
V
V
V
VCC = 4.5 V
3.15
-
VCC = 6.0 V
4.2
-
VIL
LOW-state input voltage
HIGH-state output voltage
VCC = 2.0 V
-
-
-
0.5
1.35
1.8
VCC = 4.5 V
VCC = 6.0 V
VOH
VI = VIH or VIL
IO = −20 µA; VCC = 2.0 V
IO = −20 µA; VCC = 4.5 V
IO = −20 µA; VCC = 6.0 V
IO = −6.0 mA; VCC = 4.5 V
IO = −7.8 mA; VCC = 6 V
VI = VIH or VIL
1.9
-
-
-
-
-
-
-
-
-
-
V
V
V
V
V
4.4
5.9
3.84
5.34
VOL
LOW-state output voltage
IO = 20 µA; VCC = 2.0 V
IO = 20 µA; VCC = 4.5 V
IO = 20 µA; VCC = 6.0 V
IO = 6.0 mA; VCC = 4.5 V
IO = 7.8 mA; VCC = 6 V
VI = VCC or GND; VCC = 6 V
VI = VIH or VIL; VO = VCC or GND
VI = VCC or GND; IO = 0 A;
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
0.1
V
0.1
V
0.1
V
0.33
0.33
±1.0
±5.0
80
V
V
ILI
input leakage current
µA
µA
µA
IOZ
ICC
OFF-state output current
quiescent supply current
VCC = 6.0 V
74HC_HCT244_3
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 22 December 2005
7 of 22
74HC244; 74HCT244
Philips Semiconductors
Octal buffer/line driver; 3-state
Table 7:
Static characteristics 74HC244 …continued
At recommended operating conditions; voltages are referenced to GND (ground = 0V).
Symbol
Tamb = −40 °C to +125 °C
VIH HIGH-state input voltage
Parameter
Conditions
Min
Typ
Max
Unit
VCC = 2.0 V
1.5
-
-
-
-
-
-
-
V
V
V
V
V
V
VCC = 4.5 V
3.15
-
VCC = 6.0 V
4.2
-
VIL
LOW-state input voltage
HIGH-state output voltage
VCC = 2.0 V
-
-
-
0.5
1.35
1.8
VCC = 4.5 V
VCC = 6.0 V
VOH
VI = VIH or VIL
IO = −20 µA; VCC = 2.0 V
IO = −20 µA; VCC = 4.5 V
IO = −20 µA; VCC = 6.0 V
IO = −6.0 mA; VCC = 4.5 V
IO = −7.8 mA; VCC = 6 V
VI = VIH or VIL
1.9
4.4
5.9
3.7
5.2
-
-
-
-
-
-
-
-
-
-
V
V
V
V
V
VOL
LOW-state output voltage
IO = 20 µA; VCC = 2.0 V
IO = 20 µA; VCC = 4.5 V
IO = 20 µA; VCC = 6.0 V
IO = 6.0 mA; VCC = 4.5 V
IO = 7.8 mA; VCC = 6 V
VI = VCC or GND; VCC = 6 V
VI = VIH or VIL; VO = VCC or GND
VI = VCC or GND; IO = 0 A;
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
0.1
0.1
0.1
0.4
0.4
±1.0
V
V
V
V
V
ILI
input leakage current
µA
IOZ
ICC
OFF-state output current
quiescent supply current
±10.0 µA
160
µA
VCC = 6.0 V
Table 8:
Static characteristics 74HCT244
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Tamb = 25 °C
VIH
VIL
HIGH-state input voltage
VCC = 4.5 V to 5.5 V
VCC = 4.5 V to 5.5 V
VI = VIH or VIL; VCC = 4.5 V
IO = −20 µA
2.0
-
1.6
1.2
-
V
V
LOW-state input voltage
HIGH-state output voltage
0.8
VOH
4.4
4.5
-
-
V
V
IO = −6.0 mA
3.98
4.32
VOL
LOW-state output voltage
VI = VIH or VIL; VCC = 4.5 V
IO = 20 µA
-
-
-
-
0
0.1
V
IO = 6.0 mA
0.16
0.26
±0.1
±0.5
V
ILI
input leakage current
VI = VCC or GND; VCC = 5.5 V
-
-
µA
µA
IOZ
OFF-state output current
per input pin; VI = VIH or VIL;
VO = VCC or GND; other pins at GND
or VCC; IO = 0 A; VCC = 5.5 V
ICC
quiescent supply current
VI = VCC or GND; IO = 0 A;
-
-
8.0
µA
VCC = 5.5 V
74HC_HCT244_3
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 22 December 2005
8 of 22
74HC244; 74HCT244
Philips Semiconductors
Octal buffer/line driver; 3-state
Table 8:
Static characteristics 74HCT244 …continued
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
∆ICC
additional quiescent supply
current
per input pin; VI = VCC − 2.1 V; other
inputs at VCC or GND; IO = 0 A;
70
252
µA
VCC = 4.5 V to 5.5 V
Ci
input capacitance
-
3.5
-
pF
Tamb = −40 °C to +85 °C
VIH
VIL
HIGH-state input voltage
VCC = 4.5 V to 5.5 V
VCC = 4.5 V to 5.5 V
VI = VIH or VIL; VCC = 4.5 V
IO = −20 µA
2.0
-
-
-
-
V
V
LOW-state input voltage
HIGH-state output voltage
0.8
VOH
4.4
-
-
-
-
V
V
IO = −6.0 mA
3.84
VOL
LOW-state output voltage
VI = VIH or VIL; VCC = 4.5 V
IO = 20 µA
-
-
-
-
-
-
0.1
V
IO = 6.0 mA
0.33
±1.0
±5.0
V
ILI
input leakage current
VI = VCC or GND; VCC = 5.5 V
µA
µA
IOZ
OFF-state output current
per input pin; VI = VIH or VIL;
VO = VCC or GND; other pins at GND
or VCC; IO = 0 A; VCC = 5.5 V
ICC
quiescent supply current
VI = VCC or GND; IO = 0 A;
-
-
-
-
80
µA
µA
VCC = 5.5 V
∆ICC
additional quiescent supply
current
per input pin; VI = VCC − 2.1 V; other
inputs at VCC or GND; IO = 0 A;
315
VCC = 4.5 V to 5.5 V
Tamb = −40 °C to +125 °C
VIH
VIL
HIGH-state input voltage
VCC = 4.5 V to 5.5 V
VCC = 4.5 V to 5.5 V
VI = VIH or VIL; VCC = 4.5 V
IO = −20 µA
2.0
-
-
-
-
V
V
LOW-state input voltage
HIGH-state output voltage
0.8
VOH
4.4
3.7
-
-
-
-
V
V
IO = −6.0 mA
VOL
LOW-state output voltage
VI = VIH or VIL; VCC = 4.5 V
IO = 20 µA
-
-
-
-
-
-
-
-
0.1
V
IO = 6.0 mA
0.4
V
ILI
input leakage current
VI = VCC or GND; VCC = 5.5 V
±1.0
µA
IOZ
OFF-state output current
per input pin; VI = VIH or VIL;
±10.0 µA
VO = VCC or GND; other pins at GND
or VCC; IO = 0 A; VCC = 5.5 V
ICC
quiescent supply current
VI = VCC or GND; IO = 0 A;
-
-
-
-
160
343
µA
µA
VCC = 5.5 V
∆ICC
additional quiescent supply
current
per input pin; VI = VCC − 2.1 V; other
inputs at VCC or GND; IO = 0 A;
VCC = 4.5 V to 5.5 V
74HC_HCT244_3
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 22 December 2005
9 of 22
74HC244; 74HCT244
Philips Semiconductors
Octal buffer/line driver; 3-state
11. Dynamic characteristics
Table 9:
Dynamic characteristics 74HC244
GND = 0 V; tr = tf = 6 ns; CL = 50 pF unless otherwise specified; for test circuit see Figure 8.
Symbol Parameter
Conditions
Min
Typ
Max
Unit
Tamb = 25 °C
tPHL
tPLH
,
propagation delay nAn to nYn see Figure 6
VCC = 2.0 V
VCC = 4.5 V
-
-
-
-
30
11
9
110
22
-
ns
ns
ns
ns
VCC = 5 V; CL = 15 pF
VCC = 6.0 V
see Figure 7
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
see Figure 7
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
see Figure 6
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
VI = GND to VCC
9
19
tPZH
tPZL
,
,
3-state output enable time
nOE to nYn
-
-
-
36
13
10
150
30
ns
ns
ns
26
tPHZ
tPLZ
3-state output disable time
nOE to nYn
-
-
-
39
14
11
150
30
ns
ns
ns
26
tTHL
,
output transition time
tTLH
-
-
-
-
14
5
60
12
10
-
ns
ns
ns
pF
4
[1]
CPD
power dissipation
capacitance
35
Tamb = −40 °C to +85 °C
tPHL
tPLH
,
propagation delay nAn to nYn see Figure 6
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
-
-
-
-
-
-
145
28
ns
ns
ns
24
tPZH
tPZL
,
,
3-state output enable time
nOE to nYn
see Figure 7
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
see Figure 7
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
see Figure 6
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
-
-
-
-
-
-
190
38
ns
ns
ns
33
tPHZ
tPLZ
3-state output disable time
nOE to nYn
-
-
-
-
-
-
190
38
ns
ns
ns
33
tTHL
,
output transition time
tTLH
-
-
-
-
-
-
75
15
13
ns
ns
ns
74HC_HCT244_3
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 22 December 2005
10 of 22
74HC244; 74HCT244
Philips Semiconductors
Octal buffer/line driver; 3-state
Table 9:
Dynamic characteristics 74HC244 …continued
GND = 0 V; tr = tf = 6 ns; CL = 50 pF unless otherwise specified; for test circuit see Figure 8.
Symbol Parameter
Conditions
Min
Typ
Max
Unit
Tamb = −40 °C to +125 °C
tPHL
tPLH
,
propagation delay nAn to nYn see Figure 6
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
-
-
-
-
-
-
165
33
ns
ns
ns
28
tPZH
tPZL
,
,
3-state output enable time
nOE to nYn
see Figure 7
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
see Figure 7
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
see Figure 6
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
-
-
-
-
-
-
225
45
ns
ns
ns
38
tPHZ
tPLZ
3-state output disable time
nOE to nYn
-
-
-
-
-
-
225
45
ns
ns
ns
38
tTHL
,
output transition time
tTLH
-
-
-
-
-
-
90
18
15
ns
ns
ns
[1] CPD is used to determine the dynamic power dissipation (PD in µW):
PD = CPD × VCC2 × fi × N + ∑(CL × VCC2 × fo) where:
fi = input frequency in MHz;
fo = output frequency in MHz;
CL = output load capacitance in pF;
VCC = supply voltage in V;
N = number of inputs switching;
∑(CL × VCC2 × fo) = sum of outputs.
Table 10: Dynamic characteristics type 74HCT244
GND = 0 V; tr = tf = 6 ns; CL = 50 pF unless otherwise specified; for test circuit see Figure 8.
Symbol Parameter
Conditions
Min
Typ
Max
Unit
Tamb = 25 °C
tPHL
tPLH
,
propagation delay nAn to nYn see Figure 6
VCC = 4.5 V
-
-
-
13
11
15
22
-
ns
ns
ns
VCC = 5 V; CL = 15 pF
tPZH
tPZL
,
,
3-state output enable time
nOE to nYn
VCC = 4.5 V; see Figure 7
VCC = 4.5 V; see Figure 7
VCC = 4.5 V; see Figure 6
VI = GND to (VCC − 1.5 V)
30
tPHZ
tPLZ
3-state output disable time
nOE to nYn
-
-
-
15
5
25
12
-
ns
ns
pF
tTHL
,
output transition time
tTLH
[1]
CPD
power dissipation
capacitance
35
74HC_HCT244_3
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 22 December 2005
11 of 22
74HC244; 74HCT244
Philips Semiconductors
Octal buffer/line driver; 3-state
Table 10: Dynamic characteristics type 74HCT244 …continued
GND = 0 V; tr = tf = 6 ns; CL = 50 pF unless otherwise specified; for test circuit see Figure 8.
Symbol Parameter
Conditions
Min
Typ
Max
Unit
Tamb = −40 °C to +85 °C
tPHL
tPLH
,
propagation delay nAn to nYn VCC = 4.5 V; see Figure 6
-
-
-
-
-
-
-
-
28
38
31
15
ns
ns
ns
ns
tPZH
tPZL
,
,
3-state output enable time
nOE to nYn
VCC = 4.5 V; see Figure 7
VCC = 4.5 V; see Figure 7
VCC = 4.5 V; see Figure 6
tPHZ
tPLZ
3-state output disable time
nOE to nYn
tTHL
,
output transition time
tTLH
Tamb = −40 °C to +125 °C
tPHL propagation delay nAn to nYn VCC = 4.5 V; see Figure 6
tPLH
tPZH
tPZL
tPHZ
tPLZ
tTHL
tTLH
,
-
-
-
-
-
-
-
-
33
45
38
18
ns
ns
ns
ns
,
,
3-state output enable time
nOE to nYn
VCC = 4.5 V; see Figure 7
VCC = 4.5 V; see Figure 7
VCC = 4.5 V; see Figure 6
3-state output disable time
nOE to nYn
,
output transition time
[1] CPD is used to determine the dynamic power dissipation (PD in µW):
PD = CPD × VCC2 × fi × N + ∑(CL × VCC2 × fo) where:
fi = input frequency in MHz;
fo = output frequency in MHz;
CL = output load capacitance in pF;
VCC = supply voltage in V;
N = number of inputs switching;
∑(CL × VCC2 × fo) = sum of outputs.
12. Waveforms
V
I
V
V
M
nAn input
GND
M
t
t
PHL
PLH
V
OH
90 %
V
V
nYn output
M
M
10 %
V
OL
t
t
TLH
THL
001aae013
Measurement points are given in Table 11.
VOL and VOH are typical voltage output drop that occur with the output load.
Fig 6. Propagation delay input (1An, 2An) to output (1Yn, 2Yn) and transition time output
(nYn)
74HC_HCT244_3
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 22 December 2005
12 of 22
74HC244; 74HCT244
Philips Semiconductors
Octal buffer/line driver; 3-state
V
I
nOE input
V
M
GND
t
t
PZL
PLZ
V
CC
nYn output
LOW-to-OFF
OFF-to-LOW
V
M
V
X
V
OL
t
t
PZH
PHZ
V
OH
V
Y
nYn output
HIGH-to-OFF
OFF-to-HIGH
V
M
GND
outputs
enabled
outputs
disabled
outputs
enabled
001aae014
Measurement points are given in Table 11.
VOL and VOH are typical voltage output drop that occur with the output load.
Fig 7. 3-state enable and disable times
Table 11: Measurement points
Type
Input
VM
Output
VM
74HC244
0.5VCC
1.3 V
0.5VCC
1.3 V
74HCT244
74HC_HCT244_3
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 22 December 2005
13 of 22
74HC244; 74HCT244
Philips Semiconductors
Octal buffer/line driver; 3-state
t
W
V
I
90 %
negative
pulse
V
V
V
M
M
10 %
0 V
t
t
r
f
t
t
f
r
V
I
90 %
positive
pulse
V
M
M
10 %
0 V
t
W
V
V
CC
CC
V
V
O
I
R
L
S1
PULSE
GENERATOR
open
DUT
R
T
C
L
001aad983
Test data is given in Table 12.
Definitions test circuit:
RT = Termination resistance should be equal to output impedance Zo of the pulse generator
CL = Load capacitance including jig and probe capacitance
RL = Load resistor
S1 = Test selection switch
Fig 8. Load circuitry for switching times
Table 12: Test data
Type
Input
VI
Load
CL
S1 position
tr, tf
6 ns
6 ns
RL
tPHL, tPLH tPZH, tPHZ tPZL, tPLZ
74HC244
VCC
3 V
15 pF, 50 pF 1 kΩ
15 pF, 50 pF 1 kΩ
open
open
GND
GND
VCC
VCC
74HCT244
74HC_HCT244_3
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 22 December 2005
14 of 22
74HC244; 74HCT244
Philips Semiconductors
Octal buffer/line driver; 3-state
13. Package outline
DIP20: plastic dual in-line package; 20 leads (300 mil)
SOT146-1
D
M
E
A
2
A
A
1
L
c
e
w M
Z
b
1
(e )
1
b
M
H
20
11
pin 1 index
E
1
10
0
5
10 mm
scale
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
(1)
A
A
A
(1)
(1)
Z
1
2
UNIT
mm
b
b
c
D
E
e
e
1
L
M
M
H
w
1
E
max.
min.
max.
max.
1.73
1.30
0.53
0.38
0.36
0.23
26.92
26.54
6.40
6.22
3.60
3.05
8.25
7.80
10.0
8.3
4.2
0.51
3.2
2.54
0.1
7.62
0.3
0.254
0.01
2
0.068
0.051
0.021
0.015
0.014
0.009
1.060
1.045
0.25
0.24
0.14
0.12
0.32
0.31
0.39
0.33
inches
0.17
0.02
0.13
0.078
Note
1. Plastic or metal protrusions of 0.25 mm (0.01 inch) maximum per side are not included.
REFERENCES
OUTLINE
EUROPEAN
PROJECTION
ISSUE DATE
VERSION
IEC
JEDEC
JEITA
99-12-27
03-02-13
SOT146-1
MS-001
SC-603
Fig 9. Package outline SOT146-1 (DIP20)
74HC_HCT244_3
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 22 December 2005
15 of 22
74HC244; 74HCT244
Philips Semiconductors
Octal buffer/line driver; 3-state
SO20: plastic small outline package; 20 leads; body width 7.5 mm
SOT163-1
D
E
A
X
c
y
H
E
v
M
A
Z
20
11
Q
A
2
A
(A )
3
A
1
pin 1 index
θ
L
p
L
1
10
w
detail X
e
M
b
p
0
5
10 mm
scale
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
A
max.
(1)
(1)
(1)
UNIT
mm
A
A
A
b
c
D
E
e
H
L
L
Q
v
w
y
θ
1
2
3
p
E
p
Z
0.3
0.1
2.45
2.25
0.49
0.36
0.32
0.23
13.0
12.6
7.6
7.4
10.65
10.00
1.1
0.4
1.1
1.0
0.9
0.4
2.65
0.1
0.25
0.01
1.27
0.05
1.4
0.25
0.01
0.25
0.1
8o
0o
0.012 0.096
0.004 0.089
0.019 0.013 0.51
0.014 0.009 0.49
0.30
0.29
0.419
0.394
0.043 0.043
0.016 0.039
0.035
0.016
inches
0.055
0.01 0.004
Note
1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included.
REFERENCES
OUTLINE
EUROPEAN
PROJECTION
ISSUE DATE
VERSION
IEC
JEDEC
JEITA
99-12-27
03-02-19
SOT163-1
075E04
MS-013
Fig 10. Package outline SOT163-1 (SO20)
74HC_HCT244_3
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 22 December 2005
16 of 22
74HC244; 74HCT244
Philips Semiconductors
Octal buffer/line driver; 3-state
SSOP20: plastic shrink small outline package; 20 leads; body width 5.3 mm
SOT339-1
D
E
A
X
v
c
H
M
A
y
E
Z
20
11
Q
A
2
A
(A )
3
A
1
pin 1 index
θ
L
p
L
1
10
detail X
w
M
b
p
e
0
2.5
5 mm
scale
DIMENSIONS (mm are the original dimensions)
A
(1)
(1)
(1)
UNIT
A
A
A
b
c
D
E
e
H
L
L
Q
v
w
y
Z
θ
1
2
3
p
E
p
max.
8o
0o
0.21
0.05
1.80
1.65
0.38
0.25
0.20
0.09
7.4
7.0
5.4
5.2
7.9
7.6
1.03
0.63
0.9
0.7
0.9
0.5
mm
2
0.65
0.25
1.25
0.2
0.13
0.1
Note
1. Plastic or metal protrusions of 0.2 mm maximum per side are not included.
REFERENCES
OUTLINE
EUROPEAN
PROJECTION
ISSUE DATE
VERSION
IEC
JEDEC
JEITA
99-12-27
03-02-19
SOT339-1
MO-150
Fig 11. Package outline SOT339-1 (SSOP20)
74HC_HCT244_3
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 22 December 2005
17 of 22
74HC244; 74HCT244
Philips Semiconductors
Octal buffer/line driver; 3-state
TSSOP20: plastic thin shrink small outline package; 20 leads; body width 4.4 mm
SOT360-1
D
E
A
X
c
H
v
M
A
y
E
Z
11
20
Q
A
2
(A )
3
A
A
1
pin 1 index
θ
L
p
L
1
10
detail X
w
M
b
p
e
0
2.5
5 mm
scale
DIMENSIONS (mm are the original dimensions)
A
(1)
(2)
(1)
UNIT
A
A
A
b
c
D
E
e
H
L
L
Q
v
w
y
Z
θ
1
2
3
p
E
p
max.
8o
0o
0.15
0.05
0.95
0.80
0.30
0.19
0.2
0.1
6.6
6.4
4.5
4.3
6.6
6.2
0.75
0.50
0.4
0.3
0.5
0.2
mm
1.1
0.65
0.25
1
0.2
0.13
0.1
Notes
1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.
2. Plastic interlead protrusions of 0.25 mm maximum per side are not included.
REFERENCES
OUTLINE
EUROPEAN
PROJECTION
ISSUE DATE
VERSION
IEC
JEDEC
JEITA
99-12-27
03-02-19
SOT360-1
MO-153
Fig 12. Package outline SOT360-1 (TSSOP20)
74HC_HCT244_3
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 22 December 2005
18 of 22
74HC244; 74HCT244
Philips Semiconductors
Octal buffer/line driver; 3-state
DHVQFN20: plastic dual in-line compatible thermal enhanced very thin quad flat package; no leads;
20 terminals; body 2.5 x 4.5 x 0.85 mm
SOT764-1
B
A
D
A
A
1
E
c
detail X
terminal 1
index area
C
terminal 1
index area
e
1
y
y
e
b
v
M
C
C
A
B
C
1
w
M
2
9
L
1
10
E
h
e
20
11
19
12
D
h
X
0
2.5
5 mm
scale
DIMENSIONS (mm are the original dimensions)
(1)
A
(1)
(1)
UNIT
A
b
c
E
e
e
1
y
D
D
E
L
v
w
y
1
1
h
h
max.
0.05 0.30
0.00 0.18
4.6
4.4
3.15
2.85
2.6
2.4
1.15
0.85
0.5
0.3
mm
0.05
0.1
1
0.2
0.5
3.5
0.1
0.05
Note
1. Plastic or metal protrusions of 0.075 mm maximum per side are not included.
REFERENCES
OUTLINE
EUROPEAN
PROJECTION
ISSUE DATE
VERSION
IEC
JEDEC
JEITA
02-10-17
03-01-27
SOT764-1
- - -
MO-241
- - -
Fig 13. Package outline SOT764-1 (DHVQFN20)
74HC_HCT244_3
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 22 December 2005
19 of 22
74HC244; 74HCT244
Philips Semiconductors
Octal buffer/line driver; 3-state
14. Abbreviations
Table 13: Abbreviations
Acronym
CMOS
DUT
Description
Complementary Metal Oxide Semiconductor
Device Under Test
ESD
ElectroStatic Discharge
HBM
Human Body Model
LSTTL
MM
Low-power Schottky Transistor-Transistor Logic
Machine Model
15. Revision history
Table 14: Revision history
Document ID
Release date Data sheet status
20051222 Product data sheet
Change notice Doc. number Supersedes
74HC_HCT244_3
-
-
74HC_HCT244_CNV
_2
Modifications:
• The format of this data sheet has been redesigned to comply with the new presentation and
information standard of Philips Semiconductors.
• Section 4 “Ordering information”, Section 6 “Pinning information” and Section 13 “Package
outline”: Added DHVQFN package information
• Section 10 “Static characteristics”: Added from the family specification
74HC_HCT244_CNV_2 19901201
Product specification
-
-
-
74HC_HCT244_3
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 22 December 2005
20 of 22
74HC244; 74HCT244
Philips Semiconductors
Octal buffer/line driver; 3-state
16. Data sheet status
Level Data sheet status[1] Product status[2] [3]
Definition
I
Objective data
Development
This data sheet contains data from the objective specification for product development. Philips
Semiconductors reserves the right to change the specification in any manner without notice.
II
Preliminary data
Qualification
This data sheet contains data from the preliminary specification. Supplementary data will be published
at a later date. Philips Semiconductors reserves the right to change the specification without notice, in
order to improve the design and supply the best possible product.
III
Product data
Production
This data sheet contains data from the product specification. Philips Semiconductors reserves the
right to make changes at any time in order to improve the design, manufacturing and supply. Relevant
changes will be communicated via a Customer Product/Process Change Notification (CPCN).
[1]
[2]
Please consult the most recently issued data sheet before initiating or completing a design.
The product status of the device(s) described in this data sheet may have changed since this data sheet was published. The latest information is available on the Internet at
URL http://www.semiconductors.philips.com.
[3]
For data sheets describing multiple type numbers, the highest-level product status determines the data sheet status.
customers using or selling these products for use in such applications do so
at their own risk and agree to fully indemnify Philips Semiconductors for any
damages resulting from such application.
17. Definitions
Short-form specification — The data in a short-form specification is
extracted from a full data sheet with the same type number and title. For
detailed information see the relevant data sheet or data handbook.
Right to make changes — Philips Semiconductors reserves the right to
make changes in the products - including circuits, standard cells, and/or
software - described or contained herein in order to improve design and/or
performance. When the product is in full production (status ‘Production’),
relevant changes will be communicated via a Customer Product/Process
Change Notification (CPCN). Philips Semiconductors assumes no
responsibility or liability for the use of any of these products, conveys no
license or title under any patent, copyright, or mask work right to these
products, and makes no representations or warranties that these products are
free from patent, copyright, or mask work right infringement, unless otherwise
specified.
Limiting values definition — Limiting values given are in accordance with
the Absolute Maximum Rating System (IEC 60134). Stress above one or
more of the limiting values may cause permanent damage to the device.
These are stress ratings only and operation of the device at these or at any
other conditions above those given in the Characteristics sections of the
specification is not implied. Exposure to limiting values for extended periods
may affect device reliability.
Application information — Applications that are described herein for any
of these products are for illustrative purposes only. Philips Semiconductors
makes no representation or warranty that such applications will be suitable for
the specified use without further testing or modification.
19. Trademarks
Notice — All referenced brands, product names, service names and
18. Disclaimers
trademarks are the property of their respective owners.
Life support — These products are not designed for use in life support
appliances, devices, or systems where malfunction of these products can
reasonably be expected to result in personal injury. Philips Semiconductors
20. Contact information
For additional information, please visit: http://www.semiconductors.philips.com
For sales office addresses, send an email to: sales.addresses@www.semiconductors.philips.com
74HC_HCT244_3
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 22 December 2005
21 of 22
74HC244; 74HCT244
Philips Semiconductors
Octal buffer/line driver; 3-state
21. Contents
1
2
3
4
5
General description . . . . . . . . . . . . . . . . . . . . . . 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Quick reference data . . . . . . . . . . . . . . . . . . . . . 1
Ordering information. . . . . . . . . . . . . . . . . . . . . 2
Functional diagram . . . . . . . . . . . . . . . . . . . . . . 3
6
6.1
6.2
Pinning information. . . . . . . . . . . . . . . . . . . . . . 4
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4
7
7.1
8
Functional description . . . . . . . . . . . . . . . . . . . 5
Function table . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 5
Recommended operating conditions. . . . . . . . 6
Static characteristics. . . . . . . . . . . . . . . . . . . . . 6
Dynamic characteristics . . . . . . . . . . . . . . . . . 10
Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 15
Abbreviations. . . . . . . . . . . . . . . . . . . . . . . . . . 20
Revision history. . . . . . . . . . . . . . . . . . . . . . . . 20
Data sheet status . . . . . . . . . . . . . . . . . . . . . . . 21
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Contact information . . . . . . . . . . . . . . . . . . . . 21
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© Koninklijke Philips Electronics N.V. 2005
All rights are reserved. Reproduction in whole or in part is prohibited without the prior
written consent of the copyright owner. The information presented in this document does
not form part of any quotation or contract, is believed to be accurate and reliable and may
be changed without notice. No liability will be accepted by the publisher for any
consequence of its use. Publication thereof does not convey nor imply any license under
patent- or other industrial or intellectual property rights.
Date of release: 22 December 2005
Document number: 74HC_HCT244_3
Published in The Netherlands
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