74F243
74F243 is Quad Bus Transceiver manufactured by National Semiconductor.
Description
The ’F243 is a quad bus transmitter receiver designed for 4-line asynchronous 2-way data munications between data busses
Features
Y 2-Way asynchronous data bus munication Y Input clamp diodes limit high-speed termination effects Y Guaranteed 4000V minimum ESD protection mercial 74F243SC (Note 1)
Military 54F243DM (Note 2)
54F243FM (Note 2) 54F243LM (Note 2)
Package Number J14A M14A W14B E20A
Package Description
14-Lead Ceramic Dual-In-Line 14-Lead (0 150 Wide) Molded Small Outline JEDEC 14-Lead Cerpack 20-Lead Ceramic Leadless Chip Carrier Type C
Note 1 Devices also available in 13 reel Use Suffix e SCX Note 2 Military grade device with environmental and burn-in processing Use suffix e DMQB FMQB and LMQB
Logic Symbol
Connection Diagrams
IEEE IEC
Pin Assignment for DIP SOIC and Flatpak
Pin Assignment for LCC
TL F 9502- 3
TL F 9502
- 1
TL F 9502
- 2
TRI-STATE is a registered trademark of National Semiconductor Corporation C1995 National Semiconductor Corporation TL F 9502
RRD-B30M105 Printed in U S A
Unit Loading Fan Out
54F 74F
Pin Names
Description
UL HIGH LOW
Input IIH IIL Output IOH IOL
E1 E2 An Bn
Enable Input (Active LOW) 1 0 1 67
20 m A b1 m A
Enable Input (Active HIGH) 1 0 1 67
20 m A b1 m A
Inputs
3 5 2 67
70 m A b1 6 m A
Outputs
600 106 6(80) b12 m A 64 m A(48 m A)
Truth...
