The 74LS125ASC is a 4-bit bus driver from the 74LS TTL family, designed to buffer and drive bus lines in digital systems. Its function is to take a 4-bit input and output a corresponding 4-bit signal with enough drive strength to fan out to multiple loads on a shared bus. Typical applications include memory address buffering, peripheral I/O expansion, and general-purpose line driving in 5 V TTL logic environments.

74LS125ASC BUS DRIVER, 4-BIT, TTL – Active, Bulk
MPN74LS125ASC
End of Life
74LS125ASC, BUS DRIVER, 4-BIT, TTL, Package Bulk, Active lifecycle.
$0.17Ref. price · indicative, final on quote
RoHSNot applicable
Series*
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Series | * |
| Package | Bulk |
Product details
Frequently asked questions
What is the function of 74LS125ASC?
The 74LS125ASC is a 4-bit bus driver in TTL logic. It buffers and drives four digital signals onto a bus, providing the current drive needed for fan-out to multiple loads.