SN54LS243, SN74LS243
www. ti. com . . SDLS145A – APRIL 1985 – REVISED JULY 2008
QUADRUPLE BUS TRANSCEIVERS
FEATURES
1
• Two-Way Asynchronous Communication Between Data Buses
• PNP Inputs Reduce D-C Loading • Hysteresis (Typically 400 mV) at Inputs
Improves Noise Margin
SN54LS243 . . . J OR W PACKAGE SN74LS243 . . . D, N, OR NS PACKAGE
(TOP VIEW)
GAB NC A1 A2 A3 A4
GND
1 2 3 4 5 6 7
14 VCC 13 GBA 12 NC 11 B1 10 B2 9 B3 8 B4
FUNCTION TABLE (EACH TRANSCEIVER)
INPUTS
GAB
GBA
LL
HH
HL
LH
SNxxLS243
A to B B to A Isolation Latch A and...
SN74LS243 PDF File
