DM93L38 Datasheet, PDF (1/6 Pages) Fairchild Semiconductor – 8-Bit Multiple Port Register

March 1989
Revised August 2000
DM93L38
8-Bit Multiple Port Register
General Description
The DM93L38 is an 8-bit multiple port register designed for
high speed random access memory applications where the
ability to simultaneously read and write is desirable. A com-
mon use would be as a register bank in a three address
computer. Data can be written into any one of the eight bits
and read from any two of the eight bits simultaneously. The
circuit uses TTL technology and is compatible with all TTL
families.
Features
s Master/slave operation permitting simultaneous write/
read without race problems
s Simultaneously read two bits and write one bit in any
one of eight bit positions
s Readily expandable to allow for larger word sizes
Ordering Code:
Order Number Package Number
Package Description
DM93L38N
N16E
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Logic Symbol
Connection Diagram
V_CC = Pin 16
GND = Pin 8
Pin Descriptions
Pin Names
Description
A0–A2
Write Address Inputs
DA
Data Input
B0–B2
B Read Address Inputs
C0–C2
C Read Address Inputs
CP
Clock Pulse Input (Active Rising Edge)
SLE
Slave Enable Input (Active LOW)
ZB
B Output
ZC
C Output
© 2000 Fairchild Semiconductor Corporation DS010202
www.fairchildsemi.com