National Semiconductor 9338
The 9338 8-bit multiple port register can be considered a 1bit slice of eight high speed working registers Data can be written into any one and read from any two of the eight locations simultaneously Master slave operation eliminates all race problems associated with simultaneous read write activity from the same location When the clock input (CP) is LOW data applied to the data input line (DA) enters the selected master This selection is accomplished by coding the three write input select lines (A0–A2) appropriately Data is stored synchronously with the rising edge of the clock pulse The...| Part No. | 9338 |
|---|---|
| Datasheet | 9338 Download |
| Manufacturer |  National Semiconductor |
| Description | 8-Bit Multiple Port Register |
| Buy | Stock & Price |
GENERAL DESCRIPTION
The DM9338 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 common 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 Connection Diagrams Dual-In-Line Package TL F 9794 – 1 Order Number 9338DMQB 9338FMQB or DM9338N See NS Package Number J16A N16E or W16A Pin Names A0–A2 DA B0–B2 C0–C2 CP SLE ZB ZCDESCRIPTION
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 FAST and TRI-STATE are registered trademarks of National Semiconductor Corporation C1995 National Semiconductor Corporation TL F 9794 RRD-B30M115 Printed in U S AABSOLUTE MAXIMUM RATINGS
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