The SN54125, SN54126, SN74125, SN74126, and SN54LS126A are obsolete and are no longer supplied.
SN54125, SN54126, SN54LS125A, SN54LS126A,
SN74125, SN74126, SN74LS125A, SN74LS126A QUADRUPLE BUS BUFFERS WITH 3-STATE OUTPUTS
SDLS044A – DECEMBER 1983 – REVISED MARCH 2002
D Quad Bus Buffers D 3-State Outputs D Separate Control for Each Channel
description
These bus buffers feature three-state outputs that, when enabled, have the low impedance characteristics of a TTL output with additional drive capability at high logic levels to permit driving heavily loaded bus lines without external pullup resistors.
When disabled, both output
transistors are turned off, presenting a high-impedance state to ...