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SN54ABT16657 数据表(PDF) 2 Page - Texas Instruments |
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SN54ABT16657 数据表(HTML) 2 Page - Texas Instruments |
2 / 10 page SN54ABT16657, SN74ABT16657 16-BIT TRANSCEIVERS WITH PARITY GENERATORS/CHECKERS AND 3-STATE OUTPUTS SCBS103B – FEBRUARY 1992 – REVISED JANUARY 1997 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 description (continued) In the receive mode, after the 1B (or 2B) bus is polled to determine the number of high bits, the 1ERR (or 2ERR) output logic level indicates whether or not the data to be received exhibits the correct parity sense. For example, if 1ODD/EVEN is high (odd parity selected), 1PARITY is high, and there are three high bits on the 1B bus, then 1ERR is low, indicating a parity error. 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 SN54ABT16657 is characterized for operation over the full military temperature range of –55 °C to 125°C. The SN74ABT16657 is characterized for operation from –40 °C to 85°C. FUNCTION TABLE (each 8-bit section) NUMBER OF A OR B INPUTS INPUT/OUTPUT OUTPUTS NUMBER OF A OR B INPUTS THAT ARE HIGH OE T/R ODD/EVEN INPUT/OUTPUT PARITY ERR OUTPUT MODE L H H H Z Transmit L HL L Z Transmit 02468 L LH H H Receive 0, 2, 4, 6, 8 L LH L L Receive L LL H L Receive L LL L H Receive L H H L Z Transmit L HL H Z Transmit 1357 L LH H L Receive 1, 3, 5, 7 L LH L H Receive L LL H H Receive L LL L L Receive Don’t care H X X Z Z Z |
类似零件编号 - SN54ABT16657 |
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类似说明 - SN54ABT16657 |
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