MC74LCX245M Motorola, MC74LCX245M Datasheet

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MC74LCX245M

Manufacturer Part Number
MC74LCX245M
Description
Low-voltage CMOS octal buffer
Manufacturer
Motorola
Datasheet

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Part Number:
MC74LCX245MNTWG
Manufacturer:
ON Semiconductor
Quantity:
2 350
Low-Voltage CMOS Octal
Transceiver
With 5V-Tolerant Inputs and Outputs
(3-State, Non-Inverting)
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 V I specification of 5.5V allows MC74LCX245 inputs to be
safely driven from 5V devices. The MC74LCX245 is suitable for memory
address driving and all TTL level bus oriented transceiver applications.
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.
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 MC74LCX245 is a high performance, non–inverting octal
Current drive capability is 24mA at both A and B ports. The
V CC
T/R
20
1
OE
A0
19
2
B0
A1
18
3
Pinout: 20–Lead (Top View)
B1
A2
17
4
B2
A3
16
5
B3
A4
15
6
1
B4
A5
14
7
B5
13
A6
8
B6
A7
12
9
GND
B7
11
10
PIN NAMES
Pins
OE
T/R
A0–A7
B0–B7
REV 3
20
20
20
20
MC74LCX245
LOW–VOLTAGE CMOS
OCTAL TRANSCEIVER
1
1
1
1
Function
Output Enable Input
Transmit/Receive Input
Side A 3–State Inputs or 3–State
Outputs
Side B 3–State Inputs or 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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MC74LCX245M Summary of contents

Page 1

... ESD Performance: Human Body Model >2000V; Machine Model >200V Pinout: 20–Lead (Top View T 9/95 Motorola, Inc. 1996 20 20 PIN NAMES Pins T/R A0–A7 B0– GND 1 REV 3 MC74LCX245 LOW– ...

Page 2

... MC74LCX245 INPUTS OE T 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 ...

Page 3

... V V Output in 3–State V Note < GND < GND > Typ Max Unit 3.3 3.6 V 3.3 3 5.5 – – – +85 C Min Max Unit 2 – 0.2 V 2.2 2.4 2.2 0.2 V 0.4 0.4 0.55 MOTOROLA ...

Page 4

... Number of outputs defined as “n”. Measured with “n–1” outputs switching from HIGH–to–LOW or LOW–to–HIGH. The remaining output is measured in the LOW state. CAPACITIVE CHARACTERISTICS Symbol Parameter C IN Input Capacitance C I/O Input/Output Capacitance C PD Power Dissipation Capacitance MOTOROLA (continued) Condition 2. 3.6V 3.6V ...

Page 5

... 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 MC74LCX245 2. 2. – 0. 0.3V GND 6V OPEN R 1 GND R L SWITCH Open 6V 6V GND MOTOROLA ...

Page 6

... PL 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 – M SUFFIX PLASTIC SOIC EIAJ PACKAGE CASE 967–01 ...

Page 7

... MAX MIN MAX A 6.40 6.60 0.252 0.260 B 4.30 4.50 0.169 0.177 C ––– 1.20 ––– 0.047 D 0.05 0.15 0.002 0.006 F 0.50 0.75 0.020 0.030 G 0.65 BSC 0.026 BSC H 0.27 0.37 0.011 0.015 J 0.09 0.20 0.004 0.008 –W– J1 0.09 0.16 0.004 0.006 K 0.19 0.30 0.007 0.012 K1 0.19 0.25 0.007 0.010 L 6.40 BSC 0.252 BSC MOTOROLA ...

Page 8

... Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “ ...

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