SN74F299
SN74F299 is 8-BIT UNIVERSAL SHIFT/STORAGE REGISTERS manufactured by Texas Instruments.
description
/ordering information
SN54F299 . . . J PACKAGE SN74F299 . . . DW, N, OR NS PACKAGE
(TOP VIEW)
S0 1
OE1 2
OE2 3
G/QG 4 E/QE 5 C/QC 6 A/QA 7
QA′ 8 CLR 9
GND 10
20 VCC 19 S1
18 SL
17 QH′ 16 H/QH 15 F/QF 14 D/QD 13 B/QB 12 CLK
11 SR
SN54F299 . . . FK PACKAGE (TOP VIEW)
OE2 OE1 S0 VCC S1
These 8-bit universal shift /storage registers feature multiplexed I/O ports to achieve full 8-bit data handling in a single 20-pin package. Two function-select (S0, S1) inputs and two output-enable (OE1, OE2) inputs can be used to choose the modes of operation listed in the function table.
Synchronous parallel loading is acplished by
G/QG E/QE C/QC A/QA
QA′
3 2 1 20 19
9 10 11 12 13
QH′ H/QH F/QF D/QD taking both S0 and S1 high. This places the
CLR GND
SR CLK B/QB
3-state outputs in a high-impedance state and permits data that is applied on the I/O ports to be clocked into the register. Reading out of the register can be acplished while the outputs are enabled in any mode. Clearing occurs when the clear (CLR) input is low. Taking either OE1 or OE2 high disables the outputs but has no effect on clearing, shifting, or storage of data.
ORDERING INFORMATION
PACKAGE†...
