74HC243NB [NXP]
暂无描述;
| 型号： | 74HC243NB |
| 厂家： | 
NXP |
| 描述： | 暂无描述 总线收发器 |
| 文件： | 总17页 (文件大小：90K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
74HC243
Quad bus transceiver; 3-state
Rev. 03 — 12 November 2004
Product data sheet
1. General description
The 74HC243 is a high-speed Si-gate CMOS device and is pin compatible with low power
Schottky TTL (LSTTL). The 74HC243 is specified in compliance with JEDEC
standard no. 7A.
The 74HC243 is a quad bus transceiver featuring non-inverting 3-state bus compatible
outputs in both send and receive directions. The 74HC243 is designed for 4-line
asynchronous 2-way data communications between data buses.
The output enable inputs (OEA and OEB) can be used to isolate the buses.
The 74HC243 is similar to the 74HC242 but has non-inverting (true) outputs.
2. Features
■ Non-inverting 3-state outputs
■ 2-way asynchronous data bus communication
■ Low-power dissipation
■ Complies with JEDEC standard no. 7A
■ ESD protection:
◆ HBM EIA/JESD22-A114-B exceeds 2000 V
◆ MM EIA/JESD22-A115-A exceeds 200 V.
■ Multiple package options
■ Specified from −40 °C to +80 °C and from −40 °C to +125 °C.
74HC243
Philips Semiconductors
Quad bus transceiver; 3-state
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
tPHL, tPLH
propagation delay An to Bn; CL = 15 pF; VCC = 5 V
Bn to An
-
6
-
ns
CI
input capacitance
-
-
-
3.5
10
26
-
-
-
pF
pF
pF
CI/O
CPD
input/output capacitance
[1]
power dissipation
VI = GND to VCC
capacitance per transceiver
[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
−40 °C to +125 °C
−40 °C to +125 °C
Name
DIP14
SO14
Description
Version
74HC243N
74HC243D
plastic dual in-line package; 14 leads (300 mil) SOT27-1
plastic small outline package; 14 leads;
body width 3.9 mm
SOT108-1
74HC243DB
−40 °C to +125 °C
SSOP14
plastic shrink small outline package; 14 leads; SOT337-1
body width 5.3 mm
9397 750 13808
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet
Rev. 03 — 12 November 2004
2 of 17
74HC243
Philips Semiconductors
Quad bus transceiver; 3-state
5. Functional diagram
OEB
OEA
13
1
ENABLE
EXITING
A0
A1
A2
A3
B0
B1
B2
B3
3
4
5
6
11
10
9
8
001aab953
Fig 1. Functional diagram
OEB
OEA
13
1
ENABLE
EXITING
13
EN1
EN2
1
A0
B0
B3
3
11
1
3
4
5
6
11
10
9
2
A3
6
8
8
001aab951
001aab950
Fig 2. Logic symbol
Fig 3. IEC logic symbol
9397 750 13808
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet
Rev. 03 — 12 November 2004
3 of 17
74HC243
Philips Semiconductors
Quad bus transceiver; 3-state
6. Pinning information
6.1 Pinning
1
2
3
4
5
6
7
14
13
12
11
10
9
OEA
n.c.
A0
V
CC
OEB
n.c.
B0
A1
243
A2
B1
A3
B2
8
GND
B3
001aab948
Fig 4. Pin configuration
6.2 Pin description
Table 3:
Symbol
OEA
n.c.
Pin description
Pin
1
Description
output enable input (active LOW)
not connected
2
A0
3
data input or output
data input or output
data input or output
data input or output
ground (0 V)
A1
4
A2
5
A3
6
GND
B3
7
8
data output or input
data output or input
data output or input
data output or input
not connected
B2
9
B1
10
11
12
13
14
B0
n.c.
OEB
VCC
output enable input
positive supply voltage
9397 750 13808
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet
Rev. 03 — 12 November 2004
4 of 17
74HC243
Philips Semiconductors
Quad bus transceiver; 3-state
7. Functional description
7.1 Function table
Table 4:
Function table[1]
Control
Input or output
OEA
OEB
An
input
Z
Bn
B = A
Z
L
L
H
L
L
H
H
Z
Z
H
A = B
input
[1] H = HIGH voltage level;
L = LOW voltage level;
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
-
-
±20
mA
mA
IOK
VO < −0.5 V or
VO > VCC + 0.5 V
±20
±35
±70
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
power dissipation
DIP14 package
−65
+150 °C
[1]
[2]
-
-
750
500
mW
mW
SO14 and SSOP16
packages
[1] Above 70 °C: Ptot derates linearly with 12 mW/K.
[2] Above 70 °C: Ptot derates linearly with 8 mW/K.
9397 750 13808
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet
Rev. 03 — 12 November 2004
5 of 17
74HC243
Philips Semiconductors
Quad bus transceiver; 3-state
9. Recommended operating conditions
Table 6:
Symbol
VCC
Recommended operating conditions
Parameter
Conditions
Min
Typ
Max
6.0
Unit
V
supply voltage
input voltage
output voltage
2.0
5.0
VI
0
-
VCC
VCC
1000
500
V
VO
0
-
V
tr, tf
input rise and fall
times
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
-
-
ns
ns
ns
°C
-
6.0
-
-
-
400
Tamb
ambient
−40
+125
temperature
10. Static characteristics
Table 7:
Static characteristics
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol
Tamb = 25 °C
VIH
Parameter
Conditions
Min
Typ
Max
Unit
HIGH-level input 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
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
2.0
-
-
-
-
-
V
V
V
V
V
4.4
4.5
5.9
6.0
3.98
5.48
4.32
5.81
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
-
-
-
-
-
-
-
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
3-state OFF-state current
VI = VIH or VIL; VCC = 6.0 V;
VO = VCC or GND
ICC
quiescent supply current
VI = VCC or GND; IO = 0 A;
-
-
8.0
µA
VCC = 6.0 V
CI
input capacitance
-
-
3.5
10
-
-
pF
pF
CI/O
input/output capacitance
9397 750 13808
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet
Rev. 03 — 12 November 2004
6 of 17
74HC243
Philips Semiconductors
Quad bus transceiver; 3-state
Table 7:
Static characteristics …continued
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol
Tamb = −40 °C to +85 °C
VIH HIGH-level 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-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
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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
3-state OFF-state current
VI = VIH or VIL; VCC = 6.0 V;
VO = VCC or GND
ICC
quiescent supply current
VI = VCC or GND; IO = 0 A;
-
-
80
µA
VCC = 6.0 V
Tamb = −40 °C to +125 °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
1.9
4.4
5.9
3.7
5.2
-
-
-
-
-
V
V
V
V
V
9397 750 13808
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet
Rev. 03 — 12 November 2004
7 of 17
74HC243
Philips Semiconductors
Quad bus transceiver; 3-state
Table 7:
Static characteristics …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
-
-
-
-
-
-
-
0.1
V
0.1
V
0.1
V
0.4
V
0.4
V
ILI
input leakage current
±1.0
±10.0
µA
µA
IOZ
3-state OFF-state current
VI = VIH or VIL; VCC = 6.0 V;
VO = VCC or GND
ICC
quiescent supply current
VI = VCC or GND; IO = 0 A;
-
-
160
µA
VCC = 6.0 V
11. Dynamic characteristics
Table 8:
Dynamic characteristics
GND = 0 V; tr = tf = 6 ns; CL = 50 pF; RL = 1000 Ω; see Figure 8.
Symbol
Parameter
Conditions
Min Typ Max Unit
Tamb = 25 °C
tPHL, tPLH
propagation delay An to Bn; Bn to An
see Figure 5
VCC = 2.0 V
-
-
-
-
22
8
90
18
15
-
ns
ns
ns
ns
VCC = 4.5 V
VCC = 6.0 V
6
VCC = 5.0 V; CL = 15 pF
see Figure 6 and 7
VCC = 2.0 V
6
tPZH, tPZL
tPHZ, tPLZ
tTHL, tTLH
CPD
3-state output enable time OEA to An or Bn;
OEB to An or Bn
-
-
-
50
18
14
150
30
ns
ns
ns
VCC = 4.5 V
VCC = 6.0 V
26
3-state output disable time OEA to An or Bn; see Figure 6 and 7
OEB to An or Bn
VCC = 2.0 V
-
-
-
61
22
18
165
33
ns
ns
ns
VCC = 4.5 V
VCC = 6.0 V
28
output transition time
see Figure 5
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
-
-
-
-
14
5
60
12
10
-
ns
ns
ns
pF
4
[1]
power dissipation capacitance per transceiver VI = GND to VCC
26
Tamb = −40 °C to +85 °C
tPHL, tPLH
propagation delay An to Bn; Bn to An
see Figure 5
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
-
-
-
-
-
-
115
23
ns
ns
ns
20
9397 750 13808
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet
Rev. 03 — 12 November 2004
8 of 17
74HC243
Philips Semiconductors
Quad bus transceiver; 3-state
Table 8:
Dynamic characteristics …continued
GND = 0 V; tr = tf = 6 ns; CL = 50 pF; RL = 1000 Ω; see Figure 8.
Symbol
Parameter
Conditions
Min Typ Max Unit
tPZH, tPZL
3-state output enable time OEA to An or Bn;
OEB to An or Bn
see Figure 6 and 7
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 OEA to An or Bn; see Figure 6 and 7
OEB to An or Bn
VCC = 2.0 V
-
-
-
-
-
-
205
41
ns
ns
ns
VCC = 4.5 V
VCC = 6.0 V
35
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; Bn to An
see Figure 5
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
see Figure 6 and 7
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
-
-
-
-
-
-
135
27
ns
ns
ns
23
3-state output enable time OEA to An or Bn;
OEB to An or Bn
-
-
-
-
-
-
225
45
ns
ns
ns
38
3-state output disable time OEA to An or Bn; see Figure 6 and 7
OEB to An or Bn
VCC = 2.0 V
-
-
-
-
-
-
250
50
ns
ns
ns
VCC = 4.5 V
VCC = 6.0 V
43
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.
9397 750 13808
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet
Rev. 03 — 12 November 2004
9 of 17
74HC243
Philips Semiconductors
Quad bus transceiver; 3-state
12. Waveforms
An, Bn
input
V
M
t
t
PLH
PHL
Bn, An
output
V
M
t
t
THL
TLH
001aab955
VM = 0.5 × VI.
Fig 5. Waveforms showing the input (An and Bn) to output (Bn and An) propagation
delays and the output transition times
t
t
f
r
90 %
OEA input
V
M
10 %
t
t
PLZ
PHZ
PZL
output
LOW to OFF
OFF to LOW
V
M
10 %
90 %
t
t
PZH
output
HIGH to OFF
OFF to HIGH
V
M
outputs
enabled
outputs
disabled
outputs
enabled
001aab959
VM = 0.5 × VI.
Fig 6. Waveforms showing the 3-state enable and disable times for input OEA
9397 750 13808
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet
Rev. 03 — 12 November 2004
10 of 17
74HC243
Philips Semiconductors
Quad bus transceiver; 3-state
t
t
f
r
90 %
OEB input
V
M
10 %
t
t
PZL
PLZ
output
LOW to OFF
OFF to LOW
V
M
10 %
90 %
t
t
PZH
PHZ
output
HIGH to OFF
OFF to HIGH
V
M
outputs
enabled
outputs
disabled
outputs
enabled
001aab956
VM = 0.5 × VI.
Fig 7. Waveforms showing the 3-state enable and disable times for input OEB
S
1
V
CC
open
GND
V
CC
R
L =
1000 Ω
V
V
O
I
PULSE
GENERATOR
D.U.T.
C
R
T
L
mna232
Test data is given in Table 9.
Definitions for test circuit:
RL = Load resistor.
CL = Load capacitance including jig and probe capacitance.
RT = Termination resistance should be equal to the output impedance Zo of the pulse
generator.
Fig 8. Load circuitry for switching times
Table 9:
Supply
VCC
Test data
Input
VI
Load
CL
S1
tr = tf
6 ns
6 ns
6 ns
6 ns
RL
tPZL, tPLZ tPZH, tPHZ tPHL, tPLH
2.0 V
VCC
50 pF
50 pF
50 pF
15 pF
1 kΩ
1 kΩ
1 kΩ
1 kΩ
VCC
VCC
VCC
VCC
GND
GND
GND
GND
open
open
open
open
4.5 V
VCC
6.0 V
VCC
5.0 V
VCC
9397 750 13808
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet
Rev. 03 — 12 November 2004
11 of 17
74HC243
Philips Semiconductors
Quad bus transceiver; 3-state
13. Package outline
DIP14: plastic dual in-line package; 14 leads (300 mil)
SOT27-1
D
M
E
A
2
A
A
1
L
c
e
w M
Z
b
1
(e )
1
b
M
H
14
8
pin 1 index
E
1
7
0
5
10 mm
scale
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
(1)
A
A
A
2
(1)
(1)
Z
1
UNIT
mm
b
b
c
D
E
e
e
L
M
M
H
w
1
1
E
max.
min.
max.
max.
1.73
1.13
0.53
0.38
0.36
0.23
19.50
18.55
6.48
6.20
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
2.2
0.068
0.044
0.021
0.015
0.014
0.009
0.77
0.73
0.26
0.24
0.14
0.12
0.32
0.31
0.39
0.33
inches
0.17
0.02
0.13
0.087
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
SOT27-1
050G04
MO-001
SC-501-14
Fig 9. Package outline SOT27-1 (DIP14)
9397 750 13808
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet
Rev. 03 — 12 November 2004
12 of 17
74HC243
Philips Semiconductors
Quad bus transceiver; 3-state
SO14: plastic small outline package; 14 leads; body width 3.9 mm
SOT108-1
D
E
A
X
c
y
H
v
M
A
E
Z
8
14
Q
A
2
A
(A )
3
A
1
pin 1 index
θ
L
p
L
1
7
e
detail X
w
M
b
p
0
2.5
scale
5 mm
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
A
(1)
(1)
(1)
UNIT
A
A
A
b
c
D
E
e
H
L
L
p
Q
v
w
y
Z
θ
1
2
3
p
E
max.
0.25
0.10
1.45
1.25
0.49
0.36
0.25
0.19
8.75
8.55
4.0
3.8
6.2
5.8
1.0
0.4
0.7
0.6
0.7
0.3
mm
1.75
1.27
0.05
1.05
0.25
0.01
0.25
0.1
0.25
0.01
8o
0o
0.010 0.057
0.004 0.049
0.019 0.0100 0.35
0.014 0.0075 0.34
0.16
0.15
0.244
0.228
0.039 0.028
0.016 0.024
0.028
0.012
inches
0.041
0.01 0.004
0.069
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
SOT108-1
076E06
MS-012
Fig 10. Package outline SOT108-1 (SO14)
9397 750 13808
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet
Rev. 03 — 12 November 2004
13 of 17
74HC243
Philips Semiconductors
Quad bus transceiver; 3-state
SSOP14: plastic shrink small outline package; 14 leads; body width 5.3 mm
SOT337-1
D
E
A
X
c
y
H
v
M
A
E
Z
8
14
Q
A
2
A
(A )
3
A
1
pin 1 index
θ
L
p
L
7
1
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
p
p
1
2
3
E
max.
8o
0o
0.21
0.05
1.80
1.65
0.38
0.25
0.20
0.09
6.4
6.0
5.4
5.2
7.9
7.6
1.03
0.63
0.9
0.7
1.4
0.9
mm
2
0.25
0.65
1.25
0.2
0.13
0.1
Note
1. Plastic or metal 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
SOT337-1
MO-150
Fig 11. Package outline SOT337-1 (SSOP14)
9397 750 13808
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet
Rev. 03 — 12 November 2004
14 of 17
74HC243
Philips Semiconductors
Quad bus transceiver; 3-state
14. Revision history
Table 10: Revision history
Document ID
Release
date
Data sheet status
Change notice Doc. number
Supersedes
74HC243_3
20041112 Product data sheet
-
9397 750 13808 74HC_HCT243_CNV_2
Modifications:
• The format of this data sheet has been redesigned to comply with the current presentation
and information standard of Philips Semiconductors.
• Removed type number 74HCT243.
• Inserted family specification.
74HC_HCT243_CNV_2 19970828 Product specification -
-
-
74HC_HCT243_1
-
74HC_HCT243_1
19901201 Product specification -
9397 750 13808
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet
Rev. 03 — 12 November 2004
15 of 17
74HC243
Philips Semiconductors
Quad bus transceiver; 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 13808
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet
Rev. 03 — 12 November 2004
16 of 17
74HC243
Philips Semiconductors
Quad bus transceiver; 3-state
19. Contents
1
2
3
4
5
General description . . . . . . . . . . . . . . . . . . . . . . 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Quick reference data . . . . . . . . . . . . . . . . . . . . . 2
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 . . . . . . . . . . . . . . . . . . 8
Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 12
Revision history. . . . . . . . . . . . . . . . . . . . . . . . 15
Data sheet status . . . . . . . . . . . . . . . . . . . . . . . 16
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Contact information . . . . . . . . . . . . . . . . . . . . 16
9
10
11
12
13
14
15
16
17
18
© Koninklijke Philips Electronics N.V. 2004
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: 12 November 2004
Document number: 9397 750 13808
Published in The Netherlands
相关型号：
74HC244BQ-Q100
HC/UH SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, PQCC20, 2.50 X 4.50 MM, 0.85 MM HEIGHT, PLASTIC, MO-241, SOT764-1, DHVQFN-20
NXP
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