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SN54/74LS170
4 x 4 REGISTER FILE
OPEN-COLLECTOR
The TTL / MSI SN54 / 74LS170 is a high-speed, low-power 4 x 4 Register
File organized as four words by four bits. Separate read and write inputs, both
address and enable, allow simultaneous read and write operation. 4 x 4 REGISTER FILE
Open-collector outputs make it possible to connect up to 128 outputs in a OPEN-COLLECTOR
wired-AND configuration to increase the word capacity up to 512 words. Any
LOW POWER SCHOTTKY
number of these devices can be operated in parallel to generate an n-bit
length.
The SN54 / 74LS670 provides a similar function to this device but it features
3-state outputs.