MC74LCX244 Motorola, MC74LCX244 Datasheet

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MC74LCX244

Manufacturer Part Number
MC74LCX244
Description
Low-Voltage CMOS Octal Buffer
Manufacturer
Motorola
Datasheet

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Low-Voltage CMOS Octal
Buffer
With 5V-Tolerant Inputs and Outputs
(3-State, Non-Inverting)
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 V I
specification of 5.5V allows MC74LCX244 inputs to be safely driven from
5V devices. The MC74LCX244 is suitable for memory address driving
and all TTL level bus oriented transceiver applications.
(OE) input, when HIGH, disables the output by placing them in a HIGH Z
condition.
9/95
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Motorola, Inc. 1996
Designed for 2.7 to 3.6V V CC Operation
5V Tolerant — Interface Capability With 5V TTL Logic
Supports Live Insertion and Withdrawal
I OFF Specification Guarantees High Impedance When V CC = 0V
LVTTL Compatible
LVCMOS Compatible
24mA Balanced Output Sink and Source Capability
Near Zero Static Supply Current in All Three Logic States (10 A)
Substantially Reduces System Power Requirements
Latchup Performance Exceeds 500mA
ESD Performance: Human Body Model >2000V; Machine Model >200V
The MC74LCX244 is a high performance, non–inverting octal buffer
Current drive capability is 24mA at the outputs. The Output Enable
V CC
1OE
20
1
2OE
1D0
19
2
1O0
2O0
18
3
Pinout: 20–Lead (Top View)
2D0
1D1
17
4
1O1
2O1
16
5
2D1
1D2
15
6
1
1O2
2O2
14
7
2D2
1D3
13
8
1O3
2O3
12
9
GND
2D3
11
10
PIN NAMES
Pins
nOE
1Dn, 2Dn
1On, 2On
REV 3
20
20
20
20
MC74LCX244
LOW–VOLTAGE CMOS
1
1
OCTAL BUFFER
1
1
Function
Output Enable Inputs
Data Inputs
3–State Outputs
PLASTIC SOIC EIAJ
PLASTIC TSSOP
PLASTIC SSOP
CASE 751D–04
CASE 940C–03
PLASTIC SOIC
CASE 948E–02
CASE 967–01
DW SUFFIX
SD SUFFIX
DT SUFFIX
M SUFFIX

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MC74LCX244 Summary of contents

Page 1

... TTL compatible outputs offer improved switching noise performance specification of 5.5V allows MC74LCX244 inputs to be safely driven from 5V devices. The MC74LCX244 is suitable for memory address driving and all TTL level bus oriented transceiver applications. ...

Page 2

... MC74LCX244 1OE 2OE High Voltage Level Low Voltage Level High Impedance State High or Low Voltage Level and Transitions Are Acceptable, for I CC reasons, DO NOT FLOAT Inputs MOTOROLA LOGIC DIAGRAM 1 1OE 2 18 1D0 1O0 4 16 1D1 1O1 6 14 1D2 1O2 ...

Page 3

... V CC 3.6V –100 2.7V –12mA 3.0V –18mA 3.0V –24mA 2. 3.6V 100 2.7V 12mA 3.0V 16mA 3.0V 24mA 3 MC74LCX244 Condition Unit V V Output in 3–State V Note < GND < GND > ...

Page 4

... MC74LCX244 DC ELECTRICAL CHARACTERISTICS Symbol Characteristic I I Input Leakage Current I OZ 3–State Output Current I OFF Power–Off Leakage Current I CC Quiescent Supply Current I CC Increase per Input AC CHARACTERISTICS ( 2.5ns 50pF 500 ) Symbol Parameter t PLH Propagation Delay t PHL ...

Page 5

... PZH t PHZ 1.5V t PZL t PLZ 1.5V WAVEFORM 2 – OUTPUT ENABLE AND DISABLE TIMES 2.5ns, 10 1MHz 500ns Figure 1. AC Waveforms V CC DUT TEST Figure 2. Test Circuit 5 MC74LCX244 2. 2. – 0. 0.3V GND 6V OPEN R 1 GND ...

Page 6

... MC74LCX244 –A – –B – 0.010 (0.25 SEATING G K PLANE 0.13 (0.005) 0.10 (0.004) M MOTOROLA OUTLINE DIMENSIONS DW SUFFIX PLASTIC SOIC PACKAGE CASE 751D–04 ISSUE 0.010 (0.25 –T M – ...

Page 7

... DETAIL E H DETAIL E 7 MC74LCX244 NOTES: 13 DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 14 CONTROLLING DIMENSION: MILLIMETER. 15 DIMENSION A DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH OR GATE BURRS SHALL NOT EXCEED 0.15 (0.006) PER SIDE. 16 DIMENSION B DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSION ...

Page 8

... JAPAN: Nippon Motorola Ltd.; Tatsumi–SPD–JLDC, 6F Seibu–Butsuryu–Center, 3–14–2 Tatsumi Koto–Ku, Tokyo 135, Japan. 81–3–3521–8315 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park, 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298 8 MC74LCX244/D LCX DATA BR1339 — REV 3 ...

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