The 'ABT2952A transceivers consist of two 8-bit back-to-back registers that store data flowing in both directions between two bidirectional buses. Data on the A or B bus is stored in the registers on the low-to-high transition of the clock (CLKAB or CLKBA) input provided that the clock-enable (CLKENAB or CLKENBA) input is low. Taking the output-enable (OEAB or OEBA) input low accesses the data on either port.
To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
The SN54ABT2952A is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ABT2952A is characterized for operation from -40°C to 85°C.
EPIC is a trademark of Texas Instruments Incorporated.
| Supply voltage (min) (V) | 4.5 |
| Supply voltage (max) (V) | 5.5 |
| Number of channels | 8 |
| IOL (max) (mA) | 64 |
| IOH (max) (mA) | -32 |
| Input type | TTL |
| Output type | 3-State |
| Features | Over-voltage tolerant inputs, Partial power down (Ioff), Very high speed (tpd 5-10ns) |
| Technology family | ABT |
| Rating | Catalog |
| Operating temperature range (°C) | -40 to 85 |
| SOIC (DW) | 24 | 159.65 mm² 15.5 x 10.3 |