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CD74HC646 Data sheet acquired from Harris
SCHS193A
January 1998 - Revised May
Semiconductor
2003
NOT
RECOMMENDED
FOR
NEW
DESIGNS
High-Speed
CMOS
Logic
Octal Bus Transceiver/Register, Three-State
Features
Description
• Independent Registers for A and B Buses
• Non-Inverting
• Three-State Outputs
• Drives 15 LSTTL Loads
• Typical Propagation Delay = 12ns (A to B, B to A) at VCC = 5V, CL = 15pF, TA = 25oC
• Fanout (Over Temperature Range) - Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads - Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
• Wide Operating Temperature Range . . .