935278646115 [NXP]
HCT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PQCC20, 2.50 X 4.50 MM, 0.85 MM HEIGHT, PLASTIC, MO-241, SOT-764-1, DHVQFN-20;
| 型号： | 935278646115 |
| 厂家： | 
NXP |
| 描述： | HCT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PQCC20, 2.50 X 4.50 MM, 0.85 MM HEIGHT, PLASTIC, MO-241, SOT-764-1, DHVQFN-20 输出元件 逻辑集成电路 |
| 文件： | 总22页 (文件大小：130K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
74HC245; 74HCT245
Octal bus tranceiver; 3-state
Rev. 03 — 31 January 2005
Product data sheet
1. General description
The 74HC245; 74HCT245 is a high-speed Si-gate CMOS device and is pin compatible
with Low-Power Schottky TTL (LSTTL).
The 74HC245; 74HCT245 is an octal transceiver featuring non-inverting 3-state bus
compatible outputs in both send and receive directions. The 74HC245; 74HCT245
features an output enable input (OE) for easy cascading and a send/receive input (DIR)
for direction control. OE controls the outputs so that the buses are effectively isolated.
The 74HC245; 74HCT245 is similar to the 74HC640; 74HCT640 but has true
(non-inverting) outputs.
2. Features
■ Octal bidirectional bus interface
■ Non-inverting 3-state outputs
■ Multiple package options
■ Complies with JEDEC standard no. 7A
■ ESD protection:
◆ HBM EIA/JESD22-A114-B exceeds 2000 V
◆ MM EIA/JESD22-A115-A exceeds 200 V
■ 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
Conditions
Min
Typ
Max
Unit
Type 74HC245
tPHL, tPLH
propagation delay
CL = 15 pF;
-
7
-
ns
An to Bn or Bn to An
VCC = 5 V
CI
input capacitance
-
-
-
3.5
10
30
-
-
-
pF
pF
pF
CI/O
CPD
input/output capacitance
[1]
power dissipation
capacitance per
transceiver
VI = GND to VCC
Type 74HCT245
tPHL, tPLH propagation delay
An to Bn or Bn to An
CL = 15 pF;
CC = 5 V
-
10
-
ns
V
74HC245; 74HCT245
Philips Semiconductors
Octal bus tranceiver; 3-state
Table 1:
Quick reference data …continued
GND = 0 V; Tamb = 25 °C; tr = tf = 6 ns.
Symbol
CI
Parameter
Conditions
Min
Typ
3.5
10
Max
Unit
pF
input capacitance
input/output capacitance
-
-
-
-
-
-
CI/O
pF
[1]
CPD
power dissipation
capacitance per
transceiver
VI = GND to
30
pF
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:
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:
Ordering information
Type number
Package
Temperature range Name
Description
Version
74HC245N
74HC245D
−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
74HC245PW
74HC245DB
74HC245BQ
−40 °C to +125 °C
−40 °C to +125 °C
−40 °C to +125 °C
TSSOP20
SSOP20
plastic thin shrink small outline package; 20 leads; SOT360-1
body width 4.4 mm
plastic shrink small outline package; 20 leads;
body width 5.3 mm
SOT339-1
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
SOT764-1
74HCT245N
74HCT245D
−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
74HCT245PW
74HCT245DB
74HCT245BQ
−40 °C to +125 °C
−40 °C to +125 °C
−40 °C to +125 °C
TSSOP20
SSOP20
plastic thin shrink small outline package; 20 leads; SOT360-1
body width 4.4 mm
plastic shrink small outline package; 20 leads;
body width 5.3 mm
SOT339-1
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
SOT764-1
9397 750 14502
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 31 January 2005
2 of 22
74HC245; 74HCT245
Philips Semiconductors
Octal bus tranceiver; 3-state
5. Functional diagram
DIR
1
OE
19
18
17
A0
2
19
B0
B1
G3
1
3EN1
A1
3
3EN2
1
A2
4
18
2
2
B2
B3
B4
B5
B6
B7
16
15
A3
5
3
4
5
6
7
8
9
17
16
15
14
13
12
11
A4
6
14
13
12
11
A5
7
A6
8
mna175
A7
9
mna174
Fig 1. Logic symbol
Fig 2. IEC logic symbol
9397 750 14502
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 31 January 2005
3 of 22
74HC245; 74HCT245
Philips Semiconductors
Octal bus tranceiver; 3-state
6. Pinning information
6.1 Pinning
terminal 1
index area
2
3
4
5
6
7
8
9
19
18
17
16
15
14
13
12
A0
A1
A2
A3
A4
A5
A6
A7
OE
B0
B1
B2
B3
B4
B5
B6
1
2
20
19
18
17
16
15
14
13
12
11
DIR
A0
V
CC
OE
B0
B1
B2
B3
B4
B5
B6
B7
245
3
A1
4
A2
5
A3
245
(1)
6
GND
A4
7
A5
8
A6
9
A7
001aac432
10
GND
Transparent top view
001aac431
(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 3. Pin configuration DIP20, SO20,
SSOP20 and TSSOP20
Fig 4. Pin configuration DHVQFN20
6.2 Pin description
Table 3:
Pin description
Symbol
DIR
A0
Pin
1
Description
direction control
data input/output
data input/output
data input/output
data input/output
data input/output
data input/output
data input/output
data input/output
ground (0 V)
2
A1
3
A2
4
A3
5
A4
6
A5
7
A6
8
A7
9
GND
B7
10
11
12
13
14
15
16
data input/output
data input/output
data input/output
data input/output
data input/output
data input/output
B6
B5
B4
B3
B2
9397 750 14502
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 31 January 2005
4 of 22
74HC245; 74HCT245
Philips Semiconductors
Octal bus tranceiver; 3-state
Table 3:
Symbol
B1
Pin description …continued
Pin
17
18
19
20
Description
data input/output
data input/output
B0
OE
output enable input (active LOW)
supply voltage
VCC
7. Functional description
7.1 Function table
Table 4:
Function table[1]
Input
OE
L
Input/output
DIR
L
An
Bn
A = B
input
Z
input
B = A
Z
L
H
H
X
[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 diode current
output diode current
VI < −0.5 V or VI > VCC + 0.5 V
VO < −0.5 V or
-
-
±20
mA
mA
IOK
±20
±35
±70
VO > VCC + 0.5 V
IO
output source or sink
current
VO = −0.5 V to VCC + 0.5 V
-
mA
ICC, IGND VCC or GND current
-
mA
Tstg
Ptot
storage temperature
total power dissipation
DIP20 package
−65
+150 °C
[1]
-
-
750
500
mW
mW
SO20, SSOP20,
TSSOP20 and
DHVQFN20 packages
[1] For DIP20 packages: above 70 °C, Ptot derates linearly with 12 mW/K.
For SO20 packages: above 70 °C, Ptot derates linearly with 8 mW/K.
For SSOP20 and TSSOP20 packages: above 60 °C, Ptot derates linearly with 5.5 mW/K.
For DHVQFN20 packages: above 60 °C, Ptot derates linearly with 4.5 mW/K.
9397 750 14502
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 31 January 2005
5 of 22
74HC245; 74HCT245
Philips Semiconductors
Octal bus tranceiver; 3-state
9. Recommended operating conditions
Table 6:
Symbol
Recommended operating conditions
Parameter
Conditions
Min
Typ
Max
Unit
Type 74HC245
VCC
VI
supply voltage
2.0
5.0
6.0
V
input voltage
0
-
VCC
VCC
1000
500
400
+125
V
VO
tr, tf
output voltage
0
-
V
input rise and fall
times
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
-
-
ns
ns
ns
°C
-
6.0
-
-
-
Tamb
ambient temperature
−40
Type 74HCT245
VCC
VI
supply voltage
4.5
0
5.0
-
5.5
V
input voltage
VCC
VCC
500
V
VO
tr, tf
output voltage
0
-
V
input rise and fall
times
VCC = 4.5 V
-
6.0
ns
Tamb
ambient temperature
−40
-
+125
°C
10. Static characteristics
Table 7:
Static characteristics type 74HC245
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Tamb = 25 °C
VIH
HIGH-level input voltage
LOW-level input voltage
HIGH-level output voltage
VCC = 2.0 V
1.5
1.2
2.4
3.2
0.8
2.1
2.8
-
V
V
V
V
V
V
VCC = 4.5 V
3.15
-
VCC = 6.0 V
4.2
-
VIL
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 = 6.0 V
1.9
2.0
-
-
-
-
-
V
V
V
V
V
4.4
4.5
5.9
6.0
3.98
5.48
4.32
5.81
9397 750 14502
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 31 January 2005
6 of 22
74HC245; 74HCT245
Philips Semiconductors
Octal bus tranceiver; 3-state
Table 7:
Static characteristics type 74HC245 …continued
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VOL
LOW-level 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 = 6.0 V
VI = VCC or GND; VCC = 6.0 V
VI = VIH or VIL; VO = VCC or GND;
-
-
-
-
-
-
-
0
0.1
V
0
0.1
V
0
0.1
V
0.15
0.26
0.26
±0.1
±0.5
V
0.16
V
ILI
input leakage current
-
-
µA
µA
IOZ
OFF-state output current
V
CC = 6.0 V
VI = VCC or GND; IO = 0 A;
CC = 6.0 V
ICC
quiescent supply current
-
-
8.0
µA
V
CI
input capacitance
-
-
3.5
10
-
-
pF
pF
CI/O
input/output capacitance
Tamb = −40 °C to +85 °C
VIH HIGH-level 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-level input voltage
HIGH-level 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 = 6.0 V
VI = VIH or VIL
1.9
-
-
-
-
-
-
-
-
-
-
V
V
V
V
V
4.4
5.9
3.84
5.34
VOL
LOW-level 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 = 6.0 V
VI = VCC or GND; VCC = 6.0 V
VI = VIH or VIL; VO = VCC or GND;
-
-
-
-
-
-
-
-
-
-
-
-
-
-
0.1
V
0.1
V
0.1
V
0.33
0.33
±1.0
±5.0
V
V
ILI
input leakage current
µA
µA
IOZ
OFF-state output current
V
CC = 6.0 V
VI = VCC or GND; IO = 0 A;
CC = 6.0 V
ICC
quiescent supply current
-
-
80
µA
V
Tamb = −40 °C to +125 °C
VIH
HIGH-level input voltage
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
1.5
-
-
-
-
-
-
V
V
V
3.15
4.2
9397 750 14502
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 31 January 2005
7 of 22
74HC245; 74HCT245
Philips Semiconductors
Octal bus tranceiver; 3-state
Table 7:
Static characteristics type 74HC245 …continued
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol
Parameter
Conditions
Min
Typ
Max
0.5
Unit
V
VIL
LOW-level input voltage
VCC = 2.0 V
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
VCC = 4.5 V
1.35
1.8
V
VCC = 6.0 V
V
VOH
HIGH-level 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 = 6.0 V
VI = VIH or VIL
1.9
4.4
5.9
3.7
5.2
-
-
-
-
-
V
V
V
V
V
VOL
LOW-level 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 = 6.0 V
VI = VCC or GND; VCC = 6.0 V
VI = VIH or VIL; VO = VCC or GND;
-
-
-
-
-
-
-
0.1
0.1
0.1
0.4
0.4
±1.0
V
V
V
V
V
ILI
input leakage current
µA
IOZ
OFF-state output current
±10.0 µA
V
CC = 6.0 V
VI = VCC or GND; IO = 0 A;
CC = 6.0 V
ICC
quiescent supply current
-
-
160
µA
V
Table 8:
Static characteristics type 74HCT245
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-level input voltage
LOW-level input voltage
HIGH-level output 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
0.8
VOH
4.4
4.5
-
-
V
V
IO = −6 mA
3.98
4.32
VOL
LOW-level output voltage
VI = VIH or VIL; VCC = 4.5 V
IO = 20 µA
-
-
-
-
0
0.1
V
IO = 6.0 mA
0.15
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
VI = VIH or VIL; VCC = 5.5 V;
VO = VCC or GND per input pin;
other inputs at VCC or GND; IO = 0 A
ICC
quiescent supply current
VI = VCC or GND; IO = 0 A;
-
-
8.0
µA
VCC = 5.5 V
9397 750 14502
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 31 January 2005
8 of 22
74HC245; 74HCT245
Philips Semiconductors
Octal bus tranceiver; 3-state
Table 8:
Static characteristics type 74HCT245 …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
VI = VCC or GND;
VCC = 4.5 V to 5.5 V; IO = 0 A
An or Bn inputs
OE input
-
-
-
-
-
40
144
540
324
-
µA
µA
µA
pF
pF
150
90
DIR input
CI
input capacitance
input/output capacitance
3.5
10
CI/O
-
Tamb = −40 °C to +85 °C
VIH
VIL
HIGH-level 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-level input voltage
HIGH-level output voltage
0.8
VOH
4.4
-
-
-
-
V
V
IO = −6 mA
3.84
VOL
LOW-level 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
VI = VIH or VIL; VCC = 5.5 V;
VO = VCC or GND per input pin;
other inputs at VCC or GND; IO = 0 A
ICC
quiescent supply current
VI = VCC or GND; IO = 0 A;
-
-
80
µA
VCC = 5.5 V
∆ICC
additional quiescent supply
current per input pin
VI = VCC − 2.1 V; other inputs at
VI = VCC or GND;
VCC = 4.5 V to 5.5 V; IO = 0 A
An or Bn inputs
OE input
-
-
-
-
-
-
180
675
405
µA
µA
µA
DIR input
Tamb = −40 °C to +125 °C
VIH
VIL
HIGH-level 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-level input voltage
HIGH-level output voltage
0.8
VOH
4.4
3.7
-
-
-
-
V
V
IO = −6 mA
VOL
LOW-level 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
±10
µA
µA
IOZ
OFF-state output current
VI = VIH or VIL; VCC = 5.5 V;
VO = VCC or GND per input pin;
other inputs at VCC or GND; IO = 0 A
9397 750 14502
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 31 January 2005
9 of 22
74HC245; 74HCT245
Philips Semiconductors
Octal bus tranceiver; 3-state
Table 8:
Static characteristics type 74HCT245 …continued
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
ICC
quiescent supply current
VI = VCC or GND; IO = 0 A;
-
-
160
µA
VCC = 5.5 V
∆ICC
additional quiescent supply
current per input pin
VI = VCC − 2.1 V; other inputs at
VI = VCC or GND;
VCC = 4.5 V to 5.5 V; IO = 0 A
An or Bn inputs
OE input
-
-
-
-
-
-
196
735
441
µA
µA
µA
DIR input
11. Dynamic characteristics
Table 9:
Dynamic characteristics type 74HC245
GND = 0 V; test circuit see Figure 7.
Symbol Parameter
Conditions
Min
Typ
Max
Unit
Tamb = 25 °C
tPHL, tPLH
propagation delay An to Bn or Bn see Figure 5
to An
VCC = 2.0 V
-
-
-
-
25
9
90
18
-
ns
ns
ns
ns
VCC = 4.5 V
VCC = 5.0 V; CL = 15 pF
7
VCC = 6.0 V
7
15
tPZH, tPZL
tPHZ, tPLZ
tTHL, tTLH
CPD
3-state output enable time OE to see Figure 6
An or OE to Bn
VCC = 2.0 V
-
-
-
30
11
9
150
30
ns
ns
ns
VCC = 4.5 V
VCC = 6.0 V
26
3-state output disable time OE to see Figure 6
An or OE to Bn
VCC = 2.0 V
-
-
-
41
15
12
150
30
ns
ns
ns
VCC = 4.5 V
VCC = 6.0 V
26
output transition time
see Figure 5
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
VI = GND to VCC
-
-
-
-
14
5
60
12
10
-
ns
ns
ns
pF
4
[1]
power dissipation capacitance
per transceiver
30
Tamb = −40 °C to +85 °C
tPHL, tPLH
propagation delay An to Bn or Bn see Figure 5
to An
VCC = 2.0 V
-
-
-
-
-
-
115
23
ns
ns
ns
VCC = 4.5 V
VCC = 6.0 V
20
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Product data sheet
Rev. 03 — 31 January 2005
10 of 22
74HC245; 74HCT245
Philips Semiconductors
Octal bus tranceiver; 3-state
Table 9:
Dynamic characteristics type 74HC245 …continued
GND = 0 V; test circuit see Figure 7.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
tPZH, tPZL
3-state output enable time OE to see Figure 6
An or OE to Bn
VCC = 2.0 V
-
-
-
-
-
-
190
38
ns
ns
ns
VCC = 4.5 V
VCC = 6.0 V
33
tPHZ, tPLZ
3-state output disable time OE to see Figure 6
An or OE to Bn
VCC = 2.0 V
-
-
-
-
-
-
190
38
ns
ns
ns
VCC = 4.5 V
VCC = 6.0 V
33
tTHL, tTLH
output transition time
see Figure 5
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
-
-
-
-
-
-
75
15
13
ns
ns
ns
Tamb = −40 °C to +125 °C
tPHL, tPLH
tPZH, tPZL
tPHZ, tPLZ
tTHL, tTLH
propagation delay An to Bn or Bn see Figure 5
to An
VCC = 2.0 V
-
-
-
-
-
-
135
27
ns
ns
ns
VCC = 4.5 V
VCC = 6.0 V
23
3-state output enable time OE to see Figure 6
An or OE to Bn
VCC = 2.0 V
-
-
-
-
-
-
225
45
ns
ns
ns
VCC = 4.5 V
VCC = 6.0 V
38
3-state output disable time OE to see Figure 6
An or OE to Bn
VCC = 2.0 V
-
-
-
-
-
-
225
45
ns
ns
ns
VCC = 4.5 V
VCC = 6.0 V
38
output transition time
see Figure 5
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
-
-
-
-
-
-
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.
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Product data sheet
Rev. 03 — 31 January 2005
11 of 22
74HC245; 74HCT245
Philips Semiconductors
Octal bus tranceiver; 3-state
Table 10: Dynamic characteristics type 74HCT245
GND = 0 V; test circuit see Figure 7.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Tamb = 25 °C
tPHL, tPLH
propagation delay An to Bn or Bn see Figure 5
to An
VCC = 4.5 V
-
-
-
12
10
16
22
-
ns
ns
ns
VCC = 5.0 V; CL = 15 pF
tPZH, tPZL
tPHZ, tPLZ
3-state output enable time OE to VCC = 4.5 V; see Figure 6
An or OE to Bn
30
3-state output disable time OE to VCC = 4.5 V; see Figure 6
An or OE to Bn
-
16
30
ns
tTHL, tTLH
CPD
output transition time
VCC = 4.5 V; see Figure 5
-
-
5
12
-
ns
[1]
power dissipation capacitance
per transceiver
VI = GND to VCC − 1.5 V
30
pF
Tamb = −40 °C to +85 °C
tPHL, tPLH
tPZH, tPZL
tPHZ, tPLZ
tTHL, tTLH
propagation delay An to Bn or Bn VCC = 4.5 V; see Figure 5
to An
-
-
-
-
-
-
-
-
28
38
38
15
ns
ns
ns
ns
3-state output enable time OE to VCC = 4.5 V; see Figure 6
An or OE to Bn
3-state output disable time OE to VCC = 4.5 V; see Figure 6
An or OE to Bn
output transition time
VCC = 4.5 V; see Figure 5
Tamb = −40 °C to +125 °C
tPHL, tPLH
tPZH, tPZL
tPHZ, tPLZ
tTHL, tTLH
propagation delay An to Bn or Bn VCC = 4.5 V; see Figure 5
to An
-
-
-
-
-
-
-
-
33
45
45
18
ns
ns
ns
ns
3-state output enable time OE to VCC = 4.5 V; see Figure 6
An or OE to Bn
3-state output disable time OE to VCC = 4.5 V; see Figure 6
An or OE to Bn
output transition time
VCC = 4.5 V; see Figure 5
[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.
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Product data sheet
Rev. 03 — 31 January 2005
12 of 22
74HC245; 74HCT245
Philips Semiconductors
Octal bus tranceiver; 3-state
12. Waveforms
V
I
V
V
M
An, Bn input
GND
M
t
t
PHL
PLH
V
OH
90 %
V
V
Bn, An output
M
M
10 %
V
OL
t
t
TLH
THL
001aac433
Measurement points are given in Table 11.
VOL and VOH are typical voltage output drop that occur with the output load.
Fig 5. Input (An, Bn) to output (Bn, An) propagation delays and output transition times
t
t
r
f
V
I
90 %
OE input
output
V
M
10 %
GND
t
t
PZL
PLZ
V
CC
LOW-to-OFF
OFF-to-LOW
V
M
10 %
V
OL
t
t
PHZ
PZH
V
OH
90 %
output
HIGH-to-OFF
OFF-to-HIGH
V
M
GND
outputs
enabled
outputs
enabled
outputs
disabled
001aac479
Measurement points are given in Table 11.
VOL and VOH are typical voltage output drop that occur with the output load.
Fig 6. 3-state output enable and disable times
Table 11: Measurement points
Type
Input
VM
Output
VM
74HC245
0.5VCC
1.3 V
0.5VCC
1.3 V
74HCT245
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Product data sheet
Rev. 03 — 31 January 2005
13 of 22
74HC245; 74HCT245
Philips Semiconductors
Octal bus tranceiver; 3-state
V
V
CC
CC
V
V
R
= 1 kΩ
I
O
L
PULSE
GENERATOR
open
D.U.T
R
C
50 pF
T
L
mgk563
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.
Fig 7. Load circuitry for switching times
Table 12: Test data
Type
Input
VI
Test
tr, tf
6 ns
6 ns
tPHL, tPLH
open
tPZH, tPHZ
GND
tPZL, tPLZ
VCC
74HC245
VCC
3 V
74HCT245
open
GND
VCC
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Product data sheet
Rev. 03 — 31 January 2005
14 of 22
74HC245; 74HCT245
Philips Semiconductors
Octal bus tranceiver; 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 8. Package outline SOT146-1 (DIP20)
9397 750 14502
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 31 January 2005
15 of 22
74HC245; 74HCT245
Philips Semiconductors
Octal bus tranceiver; 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 9. Package outline SOT163-1 (SO20)
9397 750 14502
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 31 January 2005
16 of 22
74HC245; 74HCT245
Philips Semiconductors
Octal bus tranceiver; 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 10. Package outline SOT339-1 (SSOP20)
9397 750 14502
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 31 January 2005
17 of 22
74HC245; 74HCT245
Philips Semiconductors
Octal bus tranceiver; 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 11. Package outline SOT360-1 (TSSOP20)
9397 750 14502
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Product data sheet
Rev. 03 — 31 January 2005
18 of 22
74HC245; 74HCT245
Philips Semiconductors
Octal bus tranceiver; 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 12. Package outline SOT764-1 (DHVQFN20)
9397 750 14502
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 31 January 2005
19 of 22
74HC245; 74HCT245
Philips Semiconductors
Octal bus tranceiver; 3-state
14. Revision history
Table 13: Revision history
Document ID
Release
date
Data sheet status
Change
notice
Doc. number
Supersedes
74HC_HCT245_3
Modifications:
20050131
Product data sheet
-
9397 750 14502 74HC_HCT245_CNV_2
• The format of this data sheet is 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” are modified to include the DHVQFN20 package.
74HC_HCT245_CNV_2 19930930
Product specification -
-
-
9397 750 14502
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Product data sheet
Rev. 03 — 31 January 2005
20 of 22
74HC245; 74HCT245
Philips Semiconductors
Octal bus tranceiver; 3-state
15. 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.
16. Definitions
17. Disclaimers
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.
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
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.
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.
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.
Application information — Applications that are described herein for any
of these products are for illustrative purposes only. Philips Semiconductors
make no representation or warranty that such applications will be suitable for
the specified use without further testing or modification.
18. 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
9397 750 14502
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Product data sheet
Rev. 03 — 31 January 2005
21 of 22
74HC245; 74HCT245
Philips Semiconductors
Octal bus tranceiver; 3-state
19. 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 15
Revision history. . . . . . . . . . . . . . . . . . . . . . . . 20
Data sheet status . . . . . . . . . . . . . . . . . . . . . . . 21
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . . 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: 31 January 2005
Document number: 9397 750 14502
Published in The Netherlands
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