MN54AC257-X Datasheet | National Semiconductor

Description The AC257 is a quad 2-input multiplexer with 3-state outputs. Four bits of data from two sources can be selected using a mon Data Select Input. The four outputs present the selected data in true (noninverted) form. The outputs may be switched to a high impedance state by placing a logic HIGH on the mon Output Enable (OE) input, allowing the outputs to interface directly with bus-oriented systems. Industry Part Number 54AC257 NS Part Numbers 54AC257DMQB 54AC257FMQB 54AC257LMQB Prime Die Z257 Processing MIL-STD-883, Method 5004 Subgrp Description 1 2 3 4 5 6 7 8A 8B 9 10 11 Static tests at Static tests at Static tests at Dynamic tests at Dynamic tests at Dynamic tests at Functional tests at Functional tests at Functional tests at Switching tests at Switching tests at Switching tests at Temp ( o C) +25 +125 -55 +25 +125 -55 +25 +125 -55 +25 +125 -55 Quality Conformance Inspection MIL-STD-883, Method 5005 MN54AC257-X REV 1B0 MICROCIRCUIT DATA SHEET Features Icc and Ioz reduced by 50% Multiplexer expansion by tying outputs together Noninverting TRI-STATE outputs Outputs source/sink 24 m A Standard Military Drawing (SMD) - AC257: 5962-88703 MN54AC257-X REV 1B0 MICROCIRCUIT DATA SHEET (Absolute Maximum Ratings) (Note 1) Supply Voltage (Vcc) -0.5V to +7.0V DC Input Vi = Vi = DC Input Diode Current (Iik) -0.5V Vcc +0.5V Voltage (Vi) -20 m A +20 m A -0.5V to Vcc +0.5V DC Output Diode Current (Iok) Vo = -0.5V Vo = Vcc +0.5V DC Output Voltage (Vo) DC Output Source or Sink Current (Io) +50 m A DC Vcc or Ground Current Per Output Pin (Icc or Ignd) +50 m A Storage Temperature (Tstg) -65 C to 150 C Junction Temperature (Tj) CDIP Note 1: 175 C -20 m A +20 m A -0.5V to Vcc +0.5V Absolute maximum ratings are those values beyond which damage to the device may occur. The databook specification should be met, without exception, to ensure that the system design is reliable over its power supply, temperature, and output/input loading variables. National does not...