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SN74ALS873BDW-SN74ALS873BDWR
Dual 4-Bit D-Type Latches With 3-State Outputs
Chip Carriers (FK), and Plastic (NT) and
Ceramic (JT) DIPs
descriptionThese dual 4-bit D-type latches feature 3-state
outputs designed specifically for bus driving.
These devices are particularly suitable for
implementing buffer registers, I/O ports,
bidirectional bus drivers, and working registers.
The dual 4-bit latches are transparent D-type
latches. While the latch-enable (LE) input is high,
the Q outputs follow the data (D) inputs in true
form, according to the function table. When LE is
low, the outputs are latched. When the clear (CLR)
input goes low, the Q outputs go low
independently of LE. The outputs are in the
high-impedance state when the output-enable
(OE) input is at a high logic level.
The SN54ALS873B and SN54AS873A are
characterized for operation over the full military
temperature range of −55°C to 125°C. The
SN74ALS873B and SN74AS873A are
characterized for operation from 0°C to 70°C.
FUNCTION TABLE
(each latch)
