These octal buffers and line drivers are designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. Together with the SN54ABT240, SN74ABT240A, SN54ABT241, and SN74ABT241A, these devices provide the choice of selected combinations of inverting and noninverting outputs, symmetrical active-low output-enable (OE)\ inputs, and complementary OE and OE\ inputs.
The SN54ABT244 and SN74ABT244A are organized as two 4-bit buffers/line drivers with separate OE\ inputs. When OE\ is low, the devices pass noninverted data from the A inputs to the Y outputs. When OE\ is high, the outputs are in the high-impedance state.
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 SN54ABT244 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ABT244A is characterized for operation from -40°C to 85°C.
EPIC-IIB is a trademark of Texas Instruments.
| Technology Family |
| VCC (Min) (V) |
| VCC (Max) (V) |
| Bits (#) |
| Voltage (Nom) (V) |
| F @ nom voltage (Max) (Mhz) |
| ICC @ nom voltage (Max) (mA) |
| tpd @ Nom Voltage (Max) (ns) |
| IOL (Max) (mA) |
| IOH (Max) (mA) |
| Schmitt Trigger |
| Rating |
| Operating temperature range (C) |
| SN74ABT244A |
|---|
| ABT |
| 4.5 |
| 5.5 |
| 8 |
| 5 |
| 150 |
| 0.25 |
| 4.6 |
| 64 |
| -32 |
| No |
| Catalog |
| -40 to 85 |
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