93L38 Datasheet, PDF (1/6 Pages) National Semiconductor (TI) – 8-Bit Multiple Port Register

July 1989
93L38
8-Bit Multiple Port Register
General Description
The 93L38 is an 8-bit multiple port register designed for high
speed random access memory applications where the abili-
ty to simultaneously read and write is desirable A common
use would be as a register bank in a three address comput-
er Data can be written into any one of the eight bits and
read from any two of the eight bits simultaneously The cir-
cuit uses TTL technology and is compatible with all TTL
families
Features
Y _{Master slave operation permitting simultaneous write}
read without race problems
Y _{Simultaneously read two bits and write one bit in any}
one of eight bit positions
Y _{Readily expandable to allow for larger word sizes}
Connection Diagram
Dual-In-Line Package
Logic Symbol
TL F 10202 – 1
Order Number 93L38DMQB or 93L38FMQB
See NS Package Number J16A or W16A
V_CC e Pin 16
GND e Pin 8
Pin Names
A0 – A2
DA
B0 – B2
C0 – C2
CP
SLE
ZB
ZC
Description
Write Address Inputs
Data Input
B Read Address Inputs
C Read Address Inputs
Clock Pulse Input (Active Rising Edge)
Slave Enable Input (Active LOW)
B Output
C Output
TL F 10202 – 2
C1995 National Semiconductor Corporation TL F 10202
RRD-B30M105 Printed in U S A