INTEGRATED CIRCUITS
74F242
Quad transceiver, inverting (3-State)
74F243
Quad transceiver (3-State)
Product specification
IC15 Data Handbook
1990 Aug 31
Philips
Semiconductors
Philips Semiconductors
Product specification
Transceivers
74F242 Quad Transceiver, Inverting (3-State)
74F243 Quad Transceiver (3-State)
74F242/74F243
PIN CONFIGURATION
OE
A
NC
A0
A1
A2
A3
GND
1
2
3
4
5
6
7
14
13
12
11
10
9
8
V
CC
OE
B
NC
B0
B1
B2
B3
TYPE
74F242
74F243
TYPICAL
PROPAGATION
DELAY
4.3ns
4.0ns
TYPICAL
SUPPLY CURRENT
(TOTAL)
31.2mA
66mA
ORDERING INFORMATION
DESCRIPTION
14-pin plastic DIP
14-pin plastic SO
COMMERCIAL RANGE
V
CC
= 5V
±10%,
T
amb
= 0°C to +70°C
N74F242N, N74F243N
N74F242D, N74F243D
PKG DWG #
SOT27-1
SOT108-1
SF00765
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS
An, Bn
An, Bn
OE
A
OE
B
An, Bn
DESCRIPTION
Data inputs (74F242)
Data inputs (74F243)
Output enable input (active Low)
Output enable input
Data outputs
74F (U.L.) HIGH/LOW
3.5/1.67
3.5/2.67
1.0/1.67
1.0/1.67
750/106.7
LOAD VALUE HIGH/LOW
70µA/1.0mA
70µA/1.6mA
20µA/1.0mA
20µA/1.0mA
15mA/64mA
NOTE:
One (1.0) FAST unit load is defined as: 20µA in the High state and 0.6mA in the Low state.
LOGIC SYMBOLS
74F242
3
4
5
6
3
4
5
6
74F243
A0
A1
A2
A3
A0
A1
A2
A3
1
13
OE
A
1
OE
B
13
B0
B1
B2
B3
B0
B1
B2
B3
OE
A
OE
B
V
CC
= Pin 14
GND = Pin 7
11
10
9
8
V
CC
= Pin 14
GND = Pin 7
11
10
9
8
SF00767
SF00768
1990 Aug 30
2
853–0356 00285
Philips Semiconductors
Product specification
Transceivers
74F242/74F243
LOGIC SYMBOLS (IEEE/IEC)
74F242
1
13
EN1
EN2
1
13
74F243
EN1
EN2
3
1
2
11
3
1
2
11
4
10
4
10
5
9
5
9
6
8
6
8
SF00769
SF00770
74F242
OE
A
1
OE
A
1
74F243
A0
3
11
B0
A0
3
11
B0
A1
4
10
B1
A1
4
10
B1
A2
5
9
B2
A2
5
9
B2
A3
6
8
B3
A3
6
8
B3
V
CC
= Pin 14
GND = Pin 7
OE
B
13
SF00771
V
CC
= Pin 14
GND = Pin 7
OE
B
13
SF00772
LOGIC DIAGRAMS
FUNCTION TABLE, 74F242
INPUTS
OE
A
L
H
L
H
OE
B
L
L
H
H
An
INPUT
Z
a
A=B
OUTPUTS
Bn
B=A
Z
a
INPUT
FUNCTION TABLE, 74F243
INPUTS
OE
A
L
H
L
H
OE
B
L
L
H
H
An
INPUT
Z
a
A=B
OUTPUTS
Bn
B=A
Z
a
INPUT
H = High voltage level
L = Low voltage level
Z = High impedance “off” state
a = This condition is not allowed due to excessive currents
1990 Aug 30
3
Philips Semiconductors
Product specification
Transceivers
74F242/74F243
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limits set forth in this table may impair the useful life of the device.
Unless otherwise noted these limits are over the operating free-air temperature range.)
SYMBOL
V
CC
V
IN
I
IN
V
OUT
I
OUT
T
amb
T
stg
Supply voltage
Input voltage
Input current
Voltage applied to output in High output state
Current applied to output in Low output state
Operating free-air temperature range
Storage temperature
PARAMETER
RATING
–0.5 to +7.0
–0.5 to +7.0
–30 to +5
–0.5 to V
CC
128
0 to +70
–65 to +150
UNIT
V
V
mA
V
mA
°C
°C
RECOMMENDED OPERATING CONDITIONS
LIMITS
SYMBOL
V
CC
V
IH
V
IL
I
IK
I
OH
I
OL
T
amb
Supply voltage
High-level input voltage
Low-level input voltage
Input clamp current
High-level output current
Low-level output current
Operating free-air temperature range
0
PARAMETER
MIN
4.5
2.0
0.8
–18
–15
64
70
NOM
5.0
MAX
5.5
V
V
V
mA
mA
mA
°C
UNIT
1990 Aug 30
4
Philips Semiconductors
Product specification
Transceivers
74F242/74F243
DC ELECTRICAL CHARACTERISTICS
(Over recommended operating free-air temperature range unless otherwise noted.)
SYMBOL
PARAMETER
TEST CONDITIONS
1
V
CC
= MIN,
V
IL
= MAX
MAX,
V
IH
= MIN
V
OH
High-level
High level output voltage
V
CC
= MIN,
V
IL
= MAX
MAX,
V
IH
= MIN
Low-level
Low level output voltage
Input clamp voltage
Input current at
maximum input voltage
High-level input current
Low-level input current
Off-state output current
High-level voltage applied
Off-state output current
Low-level voltage
applied
Short-circuit output current
3
I
CCH
74F242
I
CC
Supply current (total)
74F243
I
CCL
I
CCZ
I
CCH
I
CCL
I
CCZ
V
CC
= MAX
V
CC
= MAX
74F242
74F243
V
CC
= MAX, V
O
= 0 5V
MAX
0.5V
V
CC
= MAX
–100
22
40
32
64
64
71
A0–A3, B0–B3
OE
A
, OE
B
OE
A
, OE
B
only
V
CC
= MIN,
V
IL
= MAX
MAX,
V
IH
= MIN
I
OL
= –15mA
15mA
±10%V
CC
I
O
= –3mA
3mA
OH
±5%V
CC
±10%V
CC
±5%V
CC
±10%V
CC
I
OH
=MAX
±5%V
CC
0.42
–0.73
LIMITS
MIN
2.4
V
2.7
2.0
2.0
3.3
3.2
V
3.1
0.55
V
0.55
–1.2
1
100
20
–1
70
–1.0
mA
–1.6
–225
35
55
45
80
90
90
mA
mA
mA
mA
mA
mA
mA
V
mA
µA
µA
mA
µA
TYP
2
MAX
UNIT
V
OL
V
IK
I
I
I
IH
I
IL
I
IH
+I
OZH
V
CC
= MIN, I
I
= I
IK
V
CC
= MAX, V
I
= 5.5V
V
CC
= MAX, V
I
= 7.0V
V
CC
= MAX, VI = 2.7V
V
CC
= MAX, VI = 0.5V
V
CC
= MAX, V
O
= 2.7V
I
IL
+I
OZL
I
OS
NOTES:
1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable type.
2. All typical values are at V
CC
= 5V, T
amb
= 25°C.
3. Not more than one output should be shorted at a time. For testing I
OS
, the use of high-speed test apparatus and/or sample-and-hold
techniques are preferable in order to minimize internal heating and more accurately reflect operational values. Otherwise, prolonged shorting
of a High output may raise the chip temperature well above normal and thereby cause invalid readings in other parameter tests. In any
sequence of parameter tests, I
OS
tests should be performed last.
1990 Aug 30
5
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