器件名称:
MC74AC257DR2
功能描述:
Quad 2−Input Multiplexer with 3−State Outputs
文件大小:
182.05KB 共12页
简 介:
MC74AC257, MC74ACT257 Quad 2Input Multiplexer with 3State Outputs The MC74AC257/74ACT257 is a quad 2input multiplexer with 3state outputs. Four bits of data from two sources can be selected using a Common 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 common Output Enable (OE) input, allowing the outputs to interface directly with busoriented systems. http://onsemi.com w Multiplexer Expansion by Tying Outputs Together Noninverting 3State Outputs Outputs Source/Sink 24 mA ′ACT257 Has TTL Compatible Inputs These devices are available in Pbfree package(s). Specifications herein apply to both standard and Pbfree devices. Please see our website at www.onsemi.com for specific Pbfree orderable part numbers, or contact your local ON Semiconductor sales office or representative. VCC 16 OE 15 I0c 14 I1c 13 Zc 12 I0d 11 I1d 10 Zd 9 16 1 DIP16 N SUFFIX CASE 648 16 1 SO16 D SUFFIX CASE 751B 16 1 TSSOP16 DT SUFFIX CASE 948F 16 1 S 2 I0a 3 I1a 4 Za 5 I0b 6 I1b 7 Zb 8 GND 1 EIAJ16 M SUFFIX CASE 966 Figure 1. Pinout: 16Lead Packages Conductors (Top View) ORDERING INFORMATION Device MC74AC257N MC74ACT257N MC74AC257D MC74ACT257D MC74AC257DR2 MC74ACT257DR2 MC74AC257DT MC74ACT257DT MC74AC257DTR2 MC74ACT257M MC74AC257MEL MC74ACT257MEL Package PDIP16 PDIP16 SOIC16 SOIC16 SOIC16 SOIC16 TSSOP16 TSSOP16 Shipping 25 Units/Rail 25 Units/Rail 48 Units/Rail 48 ……
