参数资料
型号: MC74LCX2952SD
厂商: ON SEMICONDUCTOR
元件分类: 总线收发器
英文描述: LVC/LCX/Z SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24
封装: PLASTIC, SSOP-24
文件页数: 1/43页
文件大小: 383K
代理商: MC74LCX2952SD
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
147
REV 0.3
Motorola, Inc. 1996
11/96
Product Preview
Low-Voltage CMOS Octal
Registered Transceiver With
Dual Output and Clock
Enables
With 5V-Tolerant Inputs and Outputs
(3-State, Non-Inverting)
The MC74LCX2952 is a high performance, non–inverting octal
registered 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
performance. A VI specification of 5.5V allows MC74LCX2952 inputs to
be safely driven from 5V devices. The MC74LCX2952 is suitable for
memory address driving and all TTL level bus oriented transceiver
applications.
Two 8–bit back to back registers store data from either of two
bidirectional buses. Data applied to the inputs is entered and stored on
the rising edge of the Clock (CAB, CBA) provided that the Clock Enable
(CEAB, CEBA) is Low. The data is then presented at the 3–state output
buffers, but is only accessible when the Output Enable (OEAB, OEBA) is
Low. The operation of the MC74LCX2952 is symmetrical — A inputs to B
outputs occurs in the same manner as B inputs to A outputs.
Designed for 2.7 to 3.6V VCC Operation
5V Tolerant — Interface Capability With 5V TTL Logic
Supports Live Insertion and Withdrawal
IOFF Specification Guarantees High Impedance When VCC = 0V
LVTTL Compatible
LVCMOS Compatible
24mA Balanced Output Sink and Source Capability
Near Zero Static Supply Current in All Three Logic States (10A)
Substantially Reduces System Power Requirements
Latchup Performance Exceeds 500mA
ESD Performance: Human Body Model >2000V; Machine Model >200V
Pinout: 24–Lead Package (Top View)
23
24
22
21
20
19
18
2
1
3456
7
VCC
17
8
16
9
15
10
A7
A6
A5
A4
A3
A2
A1
A0 OEBA
B7
B6
B5
B4
B3
B2
B1
B0 OEAB CAB
14
11
13
12
CBA CEBA
CEAB GND
This document contains information on a product under development. Motorola reserves the right to change or
discontinue this product without notice.
DW SUFFIX
PLASTIC SOIC
CASE 751E–04
DT SUFFIX
PLASTIC TSSOP
CASE 948H–01
24
1
24
1
SD SUFFIX
PLASTIC SSOP
CASE 940D–03
24
1
MC74LCX2952
LOW–VOLTAGE CMOS
OCTAL REGISTERED
TRANSCEIVER
PIN NAMES
Function
Side A Inputs/Outputs
Side B Inputs/Outputs
Clock Pulse Inputs
Clock Enable Inputs
Output Enable Inputs
Pins
A0–A7
B0–B7
CAB, CBA
CEAB, CEBA
OEAB, OEBA
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