SN54LS170, SN74LS170 4-BY-4 REGISTER FILES WITH OPEN-COLLECTOR OUTPUTS SDLS065 is a production data document released by Texas Instruments. It introduces the features of the product.
This document is a technical datasheet for the SN54170, SN54LS170, SN74170, and SN74LS170 integrated circuits. These devices are 4-by-4 register files with open-collector outputs designed for use as scratch-pad memory, buffer storage, or in fast multiplication designs. The chips incorporate the equivalent of 98 gates and allow for simultaneous reading from one word location while writing to another.
| Organization | 4 Words of 4 Bits each |
|---|---|
| Typical Write Time | 30 ns |
| Typical Read Time | 25 ns |
| Operating Temp (SN74170) | 0°C to 70°C |
Yes, separate addressing permits reading from one location while writing to another.
Up to 256 outputs may be wire-AND connected.
Yes, their inputs are buffered to drive one Series 54/74 or Series 54LS/74LS standard load.