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Data sheet acquired from Harris Semiconductor SCHS195C
January 1998 - Revised October 2003
CD54HC670, CD74HC670, CD74HCT670
High-Speed CMOS Logic 4x4 Register File
[ /Title (CD74H C670, CD74H CT670) /Subject (HighSpeed CMOS Logic 4x4 Register
Features
Description
• Simultaneous and Independent Read and Write Operations
• Expandable to 512 Words of n-Bits
• Three-State Outputs
• Organized as 4 Words x 4 Bits Wide
• Buffered Inputs
•
Typical Read Time 15pF, TA = 25oC
=
16ns
for
’HC670
VCC
=
5V,
CL
=
• Fanout (Over Temperature Range)
- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
• Wide Operating Temperature Range . . .
CD74HCT670 Datasheet
