
STMicroelectronics
DESCRIPTION
The M54/74HC125/126 are high speed CMOS QUAD BUS BUFFER (3-STATE) FABRICATED IN SILICON GATE C2MOS technology.
They have the same high speed performance of LSTTL combined with true CMOS low power consumption.
These devices require the same 3-STATE control input G to be taken high to make the output go into the high impedance state.
All inputs are equipped with protection circuits against static discharge and transient excess voltage.
■ HIGH SPEED
tPD = 8 ns (TYP.) AT VCC = 5 V
■ LOW POWER DISSIPATION
ICC = 4 µA (MAX.) AT 25 °C
■ OUTPUT DRIVE CAPABILITY
15 LSTTL LOADS
■ BALANCED PROPAGATION DELAYS
tPLH = tPHL
■ SYMMETRICAL OUTPUT IMPEDANCE
IOL = |IOH| = 6 mA (MIN.)
■ HIGH NOISE IMMUNITY
VNIH = VNIL = 28 % VCC (MIN.)
■ WIDE OPERATING VOLTAGE RANGE
VCC (OPR) = 2 V TO 6 V
■ PIN AND FUNCTION COMPATIBLE
WITH 54/74LS125/126