MC74VHC240 Motorola, MC74VHC240 Datasheet

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MC74VHC240

Manufacturer Part Number
MC74VHC240
Description
Octal Bus Buffer/Line Driver
Manufacturer
Motorola
Datasheet

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Octal Bus Buffer/Line Driver
Inverting with 3-State Outputs
fabricated with silicon gate CMOS technology. It achieves high speed
operation similar to equivalent Bipolar Schottky TTL while maintaining
CMOS low power dissipation.
output enables. This device is designed to drive bus lines or buffer memory
address registers.
which provides high noise immunity and stable output. The inputs tolerate
voltages up to 7V, allowing the interface of 5V systems to 3V systems.
6/97
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Motorola, Inc. 1997
The MC74VHC240 is an advanced high speed CMOS octal bus buffer
The MC74VHC240 is an inverting 3–state buffer, and has two active–low
The internal circuit is composed of three stages, including a buffer output
High Speed: t PD = 3.6ns (Typ) at V CC = 5V
Low Power Dissipation: I CC = 4 A (Max) at T A = 25 C
High Noise Immunity: V NIH = V NIL = 28% V CC
Power Down Protection Provided on Inputs
Balanced Propagation Delays
Designed for 2V to 5.5V Operating Range
Low Noise: V OLP = 0.9V (Max)
Pin and Function Compatible with Other Standard Logic Families
Latchup Performance Exceeds 300mA
ESD Performance: HBM > 2000V; Machine Model > 200V
Chip Complexity: 120 FETs or 30 Equivalent Gates
ENABLES
OUTPUT
INPUTS
DATA
A1
A2
A3
A4
B1
B2
B3
B4
OEA
OEB
2
4
6
8
11
13
15
17
1
19
LOGIC DIAGRAM
1
18
16
14
12
9
7
5
3
YA1
YA2
YA3
YA4
YB1
YB2
YB3
YB4
INVERTING
OUTPUTS
REV 0
FUNCTION TABLE
OEA, OEB
MC74VHC240
H
L
L
MC74VHCXXXDW
MC74VHCXXXDT
MC74VHCXXXM
20–LEAD SOIC EIAJ PACKAGE
20–LEAD TSSOP PACKAGE
INPUTS
ORDERING INFORMATION
20–LEAD SOIC PACKAGE
OEA
GND
YB3
YB4
YB2
YB1
A1
A2
A3
A4
PIN ASSIGNMENT
CASE 751D–04
CASE 948E–02
CASE 967–01
DW SUFFIX
1
2
3
4
5
6
7
8
9
10
DT SUFFIX
M SUFFIX
A, B
H
X
L
20
19
18
17
16
15
14
13
12
11
SOIC
TSSOP
SOIC EIAJ
V CC
OEB
YA1
B4
YA2
B3
YA3
B2
YA4
B1
OUTPUTS
YA, YB
H
L
Z

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MC74VHC240 Summary of contents

Page 1

... SEMICONDUCTOR TECHNICAL DATA Octal Bus Buffer/Line Driver Inverting with 3-State Outputs The MC74VHC240 is an advanced high speed CMOS octal bus buffer fabricated with silicon gate CMOS technology. It achieves high speed operation similar to equivalent Bipolar Schottky TTL while maintaining CMOS low power dissipation. ...

Page 2

... MC74VHC240 Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î MAXIMUM RATINGS* Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î ...

Page 3

... Parameter P 3 MC74VHC240 Î Î Î Î Î Î Î Î Î Î Î – Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î ...

Page 4

... MC74VHC240 50% t PHL 50 Figure 1. TEST POINT OUTPUT DEVICE UNDER TEST * Includes all probe and jig capacitance Figure 3. Test Circuit MOTOROLA SWITCHING WAVEFORMS V CC OEA or OEB 50% GND t PLH TEST CIRCUITS OUTPUT DEVICE UNDER TEST ...

Page 5

... DETAIL DETAIL E 5 MC74VHC240 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSIONS A AND B DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.150 (0.006) PER SIDE. 5. DIMENSION D DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.13 (0 ...

Page 6

... BSC 0.050 BSC H E 7.40 8.20 0.291 0.323 L 0.50 0.85 0.020 0.033 L E 1.10 1.50 0.043 0.059 0.70 0.90 0.028 0.035 Z ––– 0.81 ––– 0.032 Mfax is a trademark of Motorola, Inc. MC74VHC240/D VHC Data – Advanced CMOS Logic DL203 — Rev 1 ...

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