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N74F657D Datasheet(PDF) 5 Page - NXP Semiconductors |
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N74F657D Datasheet(HTML) 5 Page - NXP Semiconductors |
5 / 12 page Philips Semiconductors Product specification 74F657 Octal transceiver with 8-bit parity generator/checker 90 July 30 5 FUNCTION TABLE NUMBER OF INPUTS THAT ARE HIGH INPUTS INPUT/OUTPUT OUTPUTS OE T/R ODD/EVEN PARITY ERROR OUTPUTS MODE 0, 2, 4, 6, 8 L L L L L L H H L L L L H L H H L L H L H L H L Z Z H L L H Transmit Transmit Receive Receive Receive Receive 1, 3, 5, 7 L L L L L L H H L L L L H L H H L L L H H L H L Z Z L H H L Transmit Transmit Receive Receive Receive Receive Don’t care H X X Z Z Z Notes to function table 1. H = High voltage level 2. L = Low voltage level 3. X = Don’t care 4. Z = High impedance ”’off” state ABSOLUTE MAXIMUM RATINGS (Operation beyond the limit set forth in this table may impair the useful life of the device. Unless otherwise noted these limits are over the operating free air temperature range.) SYMBOL PARAMETER RATING UNIT VCC Supply voltage –0.5 to +7.0 V VIN Input voltage –0.5 to +7.0 V IIN Input current –30 to +5 mA VOUT Voltage applied to output in high output state –0.5 to VCC V IOUT Current applied to output in low output state A0 – A7 48 mA B0 – B7, PARITY, ERROR 128 mA Tamb Operating free air temperature range Commercial range 0 to +70 °C Industrial range –40 to +85 °C Tstg Storage temperature range –65 to +150 °C RECOMMENDED OPERATING CONDITIONS SYMBOL PARAMETER LIMITS UNIT MIN NOM MAX VCC Supply voltage 4.5 5.0 5.5 V VIH High–level input voltage 2.0 V VIL Low–level input voltage 0.8 V IIk Input clamp current –18 mA IOH High–level output current A0 – A7 –3 mA B0 – B7, PARITY, ERROR –15 mA IOL Low–level output current A0 – A7 24 mA B0 – B7, PARITY, ERROR 64 mA Tamb Operating free air temperature range Commercial range 0 +70 °C Industrial range –40 +85 °C |
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