MC54-74HC245A MOTOROLA [Motorola, Inc], MC54-74HC245A Datasheet

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MC54-74HC245A

Manufacturer Part Number
MC54-74HC245A
Description
Octal 3-State Noninverting Buffer Transceiver
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
Octal 3-State Noninverting
Bus Transceiver
High–Performance Silicon–Gate CMOS
inputs are compatible with standard CMOS outputs; with pullup resistors,
they are compatible with LSTTL outputs.
asynchronous 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 MC54/74HC245A is identical in pinout to the LS245. The device
The HC245A is a 3–state noninverting transceiver that is used for 2–way
OUTPUT ENABLE
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: 308 FETs or 77 Equivalent Gates
PORT
DATA
DIRECTION
A
A1
A2
A3
A4
A5
A6
A7
A8
1
19
2
3
4
5
6
7
8
9
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
Direction
REV 7
H
X
L
MC54/74HC245A
DIRECTION
20
20
FUNCTION TABLE
20
1
Data Transmitted from Bus B to Bus A
Data Transmitted from Bus A to Bus B
Buses Isolated (High–Impedance State)
1
GND
MC54HCXXXAJ
MC74HCXXXAN
MC74HCXXXADW
ORDERING INFORMATION
A4
A1
A2
A3
A5
A6
A7
A8
1
PIN ASSIGNMENT
1
2
3
4
5
6
7
8
9
10
O
Operation
CERAMIC PACKAGE
PLASTIC PACKAGE
20
19
18
17
16
15
14
13
12
11
SOIC PACKAGE
CASE 751D–04
CASE 732–03
CASE 738–03
DW SUFFIX
i
N SUFFIX
V CC
OUTPUT ENABLE
B1
B2
B3
B4
B5
B6
B7
B8
J SUFFIX
Ceramic
Plastic
SOIC

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MC54-74HC245A Summary of contents

Page 1

... Octal 3-State Noninverting Bus Transceiver High–Performance Silicon–Gate CMOS The MC54/74HC245A is identical in pinout to the LS245. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LSTTL outputs. The HC245A is a 3–state noninverting transceiver that is used for 2–way asynchronous communication between data buses. The device has an active– ...

Page 2

... MC54/74HC245A 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 Î Î Î ...

Page 3

... l)* 3 MC54/74HC245A Î Î Î Î Î Î Î Î Î Î Î Î Guaranteed Limit Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î ...

Page 4

... MC54/74HC245A t r INPUT 90 50% 10% t PLH 90% OUTPUT 50 10% t TLH 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 PHL THL TEST CIRCUITS ...

Page 5

... DATA PORT DIRECTION 19 OUTPUT ENABLE High–Speed CMOS Logic Data DL129 — Rev 6 EXPANDED LOGIC DIAGRAM MC54/74HC245A DATA PORT MOTOROLA ...

Page 6

... MC54/74HC245A SEATING PLANE –A– –T– SEATING PLANE –A– –B– 20X 0.010 (0.25 18X K MOTOROLA OUTLINE DIMENSIONS J SUFFIX CERAMIC PACKAGE CASE 732–03 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 MC54/74HC245A MC74HC245A/D MOTOROLA ...

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