74F242 Просмотр технического описания (PDF) - Philips Electronics
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производитель
74F242 Datasheet PDF : 10 Pages
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Philips Semiconductors
Transceivers
74F242 Quad Transceiver, Inverting (3-State)
74F243 Quad Transceiver (3-State)
Product specification
74F242/74F243
PIN CONFIGURATION
OEA 1
NC 2
A0 3
A1 4
A2 5
A3 6
GND 7
14 VCC
13 OEB
12 NC
11 B0
10 B1
9 B2
8 B3
SF00765
TYPE
74F242
74F243
TYPICAL
PROPAGATION
DELAY
4.3ns
4.0ns
TYPICAL
SUPPLY CURRENT
(TOTAL)
31.2mA
66mA
ORDERING INFORMATION
DESCRIPTION
COMMERCIAL RANGE
VCC = 5V ±10%,
Tamb = 0°C to +70°C
14-pin plastic DIP N74F242N, N74F243N
14-pin plastic SO N74F242D, N74F243D
PKG DWG #
SOT27-1
SOT108-1
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS
DESCRIPTION
74F (U.L.) HIGH/LOW
An, Bn
Data inputs (74F242)
3.5/1.67
An, Bn
Data inputs (74F243)
3.5/2.67
OEA
Output enable input (active Low)
1.0/1.67
OEB
Output enable input
1.0/1.67
An, Bn
Data outputs
750/106.7
NOTE: One (1.0) FAST unit load is defined as: 20µA in the High state and 0.6mA in the Low state.
LOAD VALUE HIGH/LOW
70µA/1.0mA
70µA/1.6mA
20µA/1.0mA
20µA/1.0mA
15mA/64mA
LOGIC SYMBOLS
74F242
3
4
56
74F243
3
4
56
A0 A1 A2 A3
1
OEA
13
OEB
B0 B1 B2 B3
A0 A1 A2 A3
1
OEA
13
OEB
B0 B1 B2 B3
VCC = Pin 14
GND = Pin 7
11 10 9 8
SF00767
VCC = Pin 14
GND = Pin 7
11 10 9 8
SF00768
1990 Aug 30
2
853–0356 00285
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