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74ALS251D Scheda tecnica(PDF) 3 Page - NXP Semiconductors |
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74ALS251D Scheda tecnica(HTML) 3 Page - NXP Semiconductors |
3 / 8 page Philips Semiconductors Product specification 74ALS251 8-input multiplexer (3-State) 1991 Feb 08 3 LOGIC DIAGRAM VCC = Pin 16 GND = Pin 8 SC00069 I0 I1 I2 I3 I4 I5 I6 I7 4 3 2 1 15 14 13 12 S2 S1 S0 OE 9 10 11 7 56 YY FUNCTION TABLE INPUTS OUTPUTS S2 S1 S0 OE Y Y X X X H Z Z L L L L I0 I0 L L H L I1 I1 L H L L I2 I2 L H H L I3 I3 H L L L I4 I4 H L H L I5 I5 H H L L I6 I6 H H H L I7 I7 H = High voltage level L = Low voltage level X = Don’t care 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 48 mA Tamb Operating free-air temperature range 0 to +70 °C Tstg Storage temperature range –65 to +150 °C RECOMMENDED OPERATING CONDITIONS SYMBOL PARAMETER LIMITS UNIT SYMBOL PARAMETER MIN NOM MAX UNIT 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 –2.6 mA IOL Low-level output current 24 mA Tamb Operating free-air temperature range 0 +70 °C |
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