MC74HC640A Motorola, MC74HC640A Datasheet

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MC74HC640A

Manufacturer Part Number
MC74HC640A
Description
Octal 3-State Inverting Bus Transeceiver
Manufacturer
Motorola
Datasheet

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Part Number
Manufacturer
Quantity
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Part Number:
MC74HC640AN
Manufacturer:
MOTOROLA/摩托罗拉
Quantity:
20 000
Octal 3-State Inverting
Bus Transceiver
High–Performance Silicon–Gate CMOS
inputs are compatible with standard CMOS outputs; with pullup resistors,
they are compatible with LSTTL outputs.
communication between data buses. The device has an active–low Output
Enable pin, which is used to place the I/O ports into high–impedance states.
The Direction control determines whether data flows from A to B or from B
to A.
2/97
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Motorola, Inc. 1997
The MC54/74HC640A is identical in pinout to the LS640. The device
The HC640A is a 3–state transceiver that is used for 2–way asynchronous
Output Drive Capability: 15 LSTTL Loads
Outputs Directly Interface to CMOS, NMOS, and TTL
Operating Voltage Range: 2 to 6 V
Low Input Current: 1 A
High Noise Immunity Characteristic of CMOS Devices
In Compliance with the Requirements Defined by JEDEC Standard
No. 7A
Chip Complexity: 276 FETs or 69 Equivalent Gates
OUTPUT ENABLE
PORT
DATA
DIRECTION
A
A1
A2
A3
A4
A5
A6
A7
A8
2
3
4
5
6
7
8
9
1
19
LOGIC DIAGRAM
PIN 10 = GND
PIN 20 = V CC
1
18
17
16
15
14
13
12
11
B1
B2
B3
B4
B5
B6
B7
B8
B
DATA
PORT
X = don’t care
Output
Enable
Control Inputs
H
L
L
REV 7
MC54/74HC640A
20
20
Direction
DIRECTION
20
1
1
MC54HCXXXAJ
MC74HCXXXAN
MC74HCXXXADW
H
X
L
ORDERING INFORMATION
1
FUNCTION TABLE
GND
PIN ASSIGNMENT
A1
A3
A4
A2
A5
A6
A7
A8
Data Transmitted from Bus B
to Bus A (Inverted)
Data Transmitted from Bus A
to Bus B (Inverted)
Buses Isolated
(High–Impedance State)
1
2
3
4
5
6
7
8
9
10
CERAMIC PACKAGE
PLASTIC PACKAGE
SOIC PACKAGE
O
Operation
CASE 751D–04
CASE 732–03
CASE 738–03
20
19
18
17
16
15
14
13
12
11
DW SUFFIX
N SUFFIX
J SUFFIX
Ceramic
Plastic
SOIC
V CC
OUTPUT
ENABLE
B1
B2
B3
B4
B5
B6
B7
B8
i

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MC74HC640A Summary of contents

Page 1

... LOGIC DIAGRAM DATA 6 A5 PORT DIRECTION 19 OUTPUT ENABLE PIN 10 = GND PIN 2/97 Motorola, Inc. 1997 DATA 14 B5 PORT Control Inputs Output Enable don’t care ...

Page 2

... Ceramic DIP: – from 100 _ to 125 _ C SOIC Package: – from 125 _ C For high frequency or heavy load considerations, see Chapter 2 of the Motorola High–Speed CMOS Data Book (DL129/D). RECOMMENDED OPERATING CONDITIONS Î Î Î Î ...

Page 3

... NOTE: For propagation delays with loads other than 50 pF, and information on typical parametric values, see Chapter 2 of the Motorola High– Speed CMOS Data Book (DL129/D). ...

Page 4

... PHL 90% 50% OUTPUT 10 THL Figure 1. TEST POINT OUTPUT DEVICE UNDER TEST * Includes all probe and jig capacitance Figure 3. MOTOROLA SWITCHING WAVEFORMS DIRECTION OUTPUT 50 ENABLE V CC GND t PLH TLH tTEST CIRCUITS OUTPUT DEVICE UNDER ...

Page 5

... DATA PORT DIRECTION 19 OUTPUT ENABLE High–Speed CMOS Logic Data DL129 — Rev 6 EXPANDED LOGIC DIAGRAM MC54/74HC640A DATA PORT MOTOROLA ...

Page 6

... PLANE –A– –B– 20X 0.010 (0.25 18X K MOTOROLA OUTLINE DIMENSIONS J SUFFIX CERAMIC PACKAGE CASE 732–03 ISSUE SUFFIX PLASTIC PACKAGE CASE 738–03 ISSUE ...

Page 7

... Motorola, Inc. Motorola, Inc Equal Mfax is a trademark of Motorola, Inc. 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, 7 MC54/74HC640A MC74HC640A/D MOTOROLA ...

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