PDF 54AC253 Data sheet ( Hoja de datos )

Número de pieza	54AC253
Descripción	Dual 4-Input Multiplexer
Fabricantes	National Semiconductor
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No Preview Available ! www.DataSheet4U.com August 1998 54AC253 • 54ACT253 Dual 4-Input Multiplexer with TRI-STATE® Outputs General Description The ’AC/’ACT253 is a dual 4-input multiplexer with TRI-STATE outputs. It can select two bits of data from four sources using common select inputs. The outputs may be in- dividually switched to a high impedance state with a HIGH on the respective Output Enable (OE) inputs, allowing the outputs to interface directly with bus oriented systems. n Multifunction capability n Noninverting TRI-STATE outputs n Outputs source/sink 24 mA n ’ACT253 has TTL-compatible inputs n Standard Military Drawing (SMD) — ’AC253: 5962-87693 — ’ACT253: 5962-87761 Features n ICC and IOZ reduced by 50% Logic Diagrams IEEE/IEC DS100285-1 Pin Names I0a– I3a I0b– I3b S0, S1 OEa OEb Za, Zb Description Side A Data Inputs Side B Data Inputs Common Select Inputs Side A Output Enable Input Side B Output Enable Input TRI-STATE Outputs DS100285-2 TRI-STATE® is a registered trademark of National Semiconductor Corporation. FACT® is a registered trademark of Fairchild Semiconductor Corporation. © 1998 National Semiconductor Corporation DS100285 www.national.com 1 page DC Characteristics for ’AC Family Devices (Continued) Symbol Parameter IOLD IOHD ICC (Note 3) Minimum Dynamic Output Current Maximum Quiescent Supply Current 54AC VCC TA = (V) −55˚C to +125˚C Guaranteed Limits 5.5 50 5.5 −50 5.5 80.0 Note 2: All outputs loaded; thresholds on input associated with output under test. Note 3: Maximum test duration 2.0 ms, one output loaded at a time. Note 4: IIN and ICC @ 3.0V are guaranteed to be less than or equal to the respective limit @ 5.5V VCC. ICC for 54AC @ 25˚C is identical to 74AC @ 25˚C. Units mA mA µA Conditions VOLD = 1.65V Max VOHD = 3.85V Min VIN = VCC or GND DC Characteristics for ’ACT Family Devices Symbol Parameter VIH Minimum High Level Input Voltage VIL Maximum Low Level Input Voltage VOH Minimum High Level Output Voltage 54ACT VCC TA = (V) −55˚C to +125˚C Guaranteed Limits 4.5 2.0 5.5 2.0 4.5 0.8 5.5 0.8 4.5 4.4 5.5 5.4 VOL Maximum Low Level Output Voltage 4.5 5.5 4.5 5.5 3.70 4.70 0.1 0.1 IIN IOZ ICCT IOLD IOHD ICC Maximum Input Leakage Current Maximum TRI-STATE Current Maximum ICC/Input (Note 6) Minimum Dynamic Output Current Maximum Quiescent Supply Current 4.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 0.50 0.50 ±1.0 ±5.0 1.6 50 −50 80.0 Note 5: All outputs loaded; thresholds on input associated with output under test. Note 6: Maximum test duration 2.0 ms, one output loaded at a time. Note 7: ICC for 54ACT @ 25˚C is identical to 74ACT @ 25˚C. Units Conditions V VOUT = 0.1V or VCC − 0.1V V VOUT = 0.1V or VCC − 0.1V V IOUT = −50 µA (Note 5) VIN = VIL or VIH V IOH = −24 mA IOH = −24 mA V IOUT = 50 µA (Note 5) VIN = VIL or VIH V IOL = 24 mA IOL = 24 mA µA VI = VCC, GND µA VI = VIL, VIH VO = VCC, GND mA VI = VCC − 2.1V mA VOLD = 1.65V Max mA VOHD = 3.85V Min µA VIN = VCC or GND 5 www.national.com 5 Page

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