74F794 Datasheet, PDF (1/6 Pages) Fairchild Semiconductor – 8-Bit Register with Readback

March 1990
Revised August 1999
74F794
8-Bit Register with Readback
General Description
The 74F794 is an 8-bit register with readback capability
designed to store data as well as read the register informa-
tion back onto the data bus. The I/O bus (D bus) has 3-
STATE outputs. Current sinking capability is 64 mA on both
the D and Q busses.
Data is loaded into the registers on the LOW-to-HIGH tran-
sition of the clock (CP). The output enable (OE) is used to
enable data on D₀–D₇. When OE is LOW, the output of the
registers is enabled on D₀–D₇, enabling D as an output
bus. When OE is HIGH, D₀–D₇ are inputs to the registers
configuring D as an input bus.
Features
s 3-STATE outputs on the I/O port
s D and Q output sink capability of 64 mA
s Functionally and pin equivalent to the 74LS794
Ordering Code:
Order Number Package Number
Package Description
74F794SC
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
74F794PC
N20A
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbol
Connection Diagram
© 1999 Fairchild Semiconductor Corporation DS010652
www.fairchildsemi.com