| Number of channels (#) | 8 |
| Technology Family | ALS |
| Supply voltage (Min) (V) | 4.5 |
| Supply voltage (Max) (V) | 5.5 |
| Input type | Bipolar |
| Output type | 3-State |
| Clock Frequency (Max) (MHz) | 75 |
| IOL (Max) (mA) | 12 |
| IOH (Max) (mA) | -1 |
| ICC (Max) (uA) | 31000 |
| Features | High speed (tpd 10-50ns), Flow-through pinout |
- 3-State Buffer-Type Outputs Drive Bus Lines Directly
- Bus-Structured Pinout
- Package Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), and Plastic (NT) and Ceramic (JT) DIPs
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These 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 (
) input goes low, the Q outputs go low independently of LE. The outputs are in the high-impedance state when the output-enable (
) 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.
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