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MC74LCX245 PDF预览

MC74LCX245

更新时间： 2024-11-28 23:05:47
品牌 Logo 应用领域
摩托罗拉 - MOTOROLA /
页数 文件大小 规格书
8页 161K
描述
LOW-VOLTAGE CMOS OCTAL TRANSCEIVER

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MC74LCX245 数据手册

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SEMICONDUCTOR TECHNICAL DATA  
The MC74LCX245 is a high performance, non–inverting octal  
transceiver operating from a 2.7 to 3.6V supply. High impedance TTL  
compatible inputs significantly reduce current loading to input drivers  
while TTL compatible outputs offer improved switching noise  
LOW–VOLTAGE CMOS  
OCTAL TRANSCEIVER  
performance. A V specification of 5.5V allows MC74LCX245 inputs to be  
I
safely driven from 5V devices. The MC74LCX245 is suitable for memory  
address driving and all TTL level bus oriented transceiver applications.  
Current drive capability is 24mA at both A and B ports. The  
Transmit/Receive (T/R) input determines the direction of data flow  
through the bi–directional transceiver. Transmit (active–HIGH) enables  
data from A ports to B ports; Receive (active–LOW) enables data from B  
to A ports. The Output Enable input, when HIGH, disables both A and B  
ports by placing them in a HIGH Z condition.  
DW SUFFIX  
PLASTIC SOIC  
CASE 751D–04  
20  
1
• Designed for 2.7 to 3.6V V  
CC  
Operation  
• 5V Tolerant — Interface Capability With 5V TTL Logic  
• Supports Live Insertion and Withdrawal  
M SUFFIX  
PLASTIC SOIC EIAJ  
20  
• I  
OFF  
Specification Guarantees High Impedance When V  
= 0V  
CC  
CASE 967–01  
1
• LVTTL Compatible  
• LVCMOS Compatible  
• 24mA Balanced Output Sink and Source Capability  
SD SUFFIX  
PLASTIC SSOP  
CASE 940C–03  
• Near Zero Static Supply Current in All Three Logic States (10µA)  
Substantially Reduces System Power Requirements  
20  
1
• Latchup Performance Exceeds 500mA  
• ESD Performance: Human Body Model >2000V; Machine Model >200V  
DT SUFFIX  
PLASTIC TSSOP  
CASE 948E–02  
20  
1
PIN NAMES  
Pinout: 20–Lead (Top View)  
Pins  
Function  
V
OE  
19  
B0  
18  
B1  
17  
B2  
16  
B3  
15  
B4  
14  
B5  
13  
B6  
12  
B7  
11  
CC  
OE  
T/R  
A0–A7  
Output Enable Input  
20  
Transmit/Receive Input  
Side A 3–State Inputs or 3–State  
Outputs  
B0–B7  
Side B 3–State Inputs or 3–State  
Outputs  
1
2
3
4
5
6
7
9
8
10  
T/R  
A0  
A1  
A2  
A3  
A4  
A5  
A6  
A7  
GND  
9/95  
Motorola, Inc. 1996  
REV 3  
12345678

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