Texas Instruments range of Counters and Shift Registers from the 74LS Family of Low Power Schottky Logic ICs. The 74LS Family use bipolar junction technology coupled with Schottky diode clamps to achieve operating speeds equal to the original 74TTL family but with much lower power consumption.
Feature
- Separate Read/Write Addressing Permits Simultaneous Reading and Writing
- Fast Access Times…Typically 20 ns
- Organized as 4 Words of 4 Bits
- Expandable to 512 Words of n-Bits
- For Use as:
- Scratch-Pad Memory
- Buffer Storage between Processors
- Bit Storage in Fast Multiplication Designs
- 3-State Outputs
- SN54LS170 and SN74LS170 Are Similar But Have Open-Collector Outputs
