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HD74LS243
Quadruple Bus Transceivers (with three-state outputs)
REJ03D0462–0300 Rev.3.00
Jul.15.2005
Features
• Ordering Information
Part Name
Package Type
HD74LS243FPEL SOP-14 pin (JEITA)
Package Code (Previous Code)
PRSP0014DF-B (FP-14DAV)
Package Abbreviation
FP
Taping Abbreviation (Quantity)
EL (2,000 pcs/reel)
Pin Arrangement
GAB 1 NC 2 1A 3 2A 4 3A 5 4A 6
GND 7
(Top view)
14 VCC 13 GBA 12 NC 11 1B 10 2B 9 3B 8 4B
Function Table
Control input
Data port status
GAB
GBA
A
B
H
H
Output
Input
LH
*
H
L
Isolated
Isolated
L
L
Input
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.
HD74LS243 Datasheet
