HD74LS242
Quadruple Bus Transceivers (with three-state outputs)
REJ03D0461–0300
Rev.3.00
Jul.15.2005
Features
• Ordering Information
Part Name
Package Type
Package Code
(Previous Code)
Package
Abbreviation
Taping Abbreviation
(Quantity)
HD74LS242P
DILP-14 pin
PRDP0014AB-B
(DP-14AV)
P
—
HD74LS242FPEL
SOP-14 pin (JEITA)
PRSP0014DF-B
(FP-14DAV)
FP
EL (2,000 pcs/reel)
Note: Please consult the sales office for the above package availability.
Pin Arrangement
GAB
1
14
VCC
NC
2
13
GBA
1A
3
12
NC
2A
4
11
1B
3A
5
10
2B
4A
6
9
3B
GND
7
8
4B
(Top view)
Function Table
Control input
Data port status
GAB
GBA
A
B
H
H
Inverting output
Input
L
H
*
H
L
Isolated
Isolated
L
L
Input
Inverting output
Notes: 1. H; high level, L; low level
2. *; Possibly destructive oscillation may occur if the transceivers are enabled in both directions at once.
Rev.3.00, Jul.15.2005, page 1 of 6
