1 Features
• Qualified for automotive applications
• Buffered inputs
• High current bus driver outputs
• Typical propagation delay tPLH, tPHL = 8 ns at VCC
= 5 V, CL = 15 pF, TA = 25°C
• Fanout (over temperature range)
– Standard outputs – 10 LSTTL loads
– Bus driver outputs – 15 LSTTL loads
• Wide operating temperature range: –40°C to
125°C
• Balanced propagation delay and transition times
• Significant power reduction compared to LSTTL
logic ICs
• 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 (maximum), VIH = 2 V (minimum)
– CMOS input compatibility, Il ≤ 1 μA at VOL, VOH

2 Description
The CD74HC365-Q1, CD74HC366-Q1, and
CD74HCT365-Q1 silicon gate CMOS three state
buffers are general purpose high-speed non-inverting
and inverting buffers. They have high drive current
outputs which enable high speed operation even
when driving large bus capacitances. These circuits
possess the low power dissipation of CMOS circuitry,
yet have speeds comparable to low power Schottky
TTL circuits. Both circuits are capable of driving up to
15 low power Schottky inputs.