1 Features
• Complementary data outputs
• Buffered inputs and outputs
• Fanout (over temperature range)
– Standard outputs: 10 LSTTL Loads
– Bus driver outputs: 15 LSTTL Loads
• Wide operating temp range: -55°C° to 125°C
• Balanced propagation delay and transition times
• Significant power reduction compared to LSTTL
Logic ICs
• Alternate source is Philips/Signetics
• HC Types
– 2 V to 6 V operation
– High noise immunity: NIL = 30%, NIH = 30% of
VCC at VCC = 5 V
• HCT Types
– 4.5 V to 5.5 V Operation
– Direct LSTTL input logic compatibility,
VIL = 0.8 V (Max), VIH = 2 V (Min)
– CMOS input compatibility, II ≤ 1μA at VOL, VOH

2 Description
The ’HC151 and ’HCT151 are single 8-channel digital
multiplexers having three binary control inputs, A, B
and C and an active low enable (G) input. The three
binary signals select 1 of 8 channels. Outputs are
both inverting (W) and non-inverting (Y).