74ACT245 ON Semiconductor, 74ACT245 Datasheet

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74ACT245

Manufacturer Part Number
74ACT245
Description
Manufacturer
ON Semiconductor
Datasheet

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MC74AC245, MC74ACT245
Octal Bidirectional
Transceiver with 3−State
Inputs/Outputs
bidirectional buffers with 3−state outputs and is intended for
bus−oriented applications. Current sinking capability is 24 mA at both
the A and B ports. The Transmit/Receive (T/R) input determines the
direction of data flow through the bidirectional transceiver. Transmit
(active−HIGH) enables data from A ports to B ports; Receive
(active−LOW) enables data from B ports to A ports. The Output
Enable input, when HIGH, disables both A and B ports by placing
them in a High Z condition.
Features
© Semiconductor Components Industries, LLC, 2006
November, 2006 − Rev. 7
PIN ASSIGNMENT
TRUTH TABLES
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
PIN
OE
T/R
A
B
OE
H
The MC74AC245/74ACT245 contains eight non−inverting
L
L
Noninverting Buffers
Bidirectional Data Path
A and B Outputs Source/Sink 24 mA
′ACT245 has TTL Compatible Inputs
Pb−Free Packages are Available
0
0
Inputs
−A
−B
7
7
T/R
H
L
X
Bus B Data to Bus A
Bus A Data to Bus B
High Z State
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
Outputs
V
T/R
20
CC
1
OE
A
19
2
0
B
18
A
3
0
1
B
17
A
4
1
2
Figure 1.
B
16
A
5
2
3
1
B
15
A
6
3
4
B
14
A
7
4
5
B
13
A
8
5
6
See detailed ordering and shipping information in the package
dimensions section on page 6 of this data sheet.
See general marking information in the device marking
section on page 7 of this data sheet.
B
A
12
1
9
DEVICE MARKING INFORMATION
6
7
ORDERING INFORMATION
GND
B
11
10
1
7
1
1
http://onsemi.com
Publication Order Number:
DW SUFFIX
CASE 751D
CASE 948E
SOEIAJ−20
DT SUFFIX
SOIC−20W
TSSOP−20
CASE 738
N SUFFIX
M SUFFIX
CASE 967
PDIP−20
MC74AC245/D

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74ACT245 Summary of contents

Page 1

... MC74AC245, MC74ACT245 Octal Bidirectional Transceiver with 3−State Inputs/Outputs The MC74AC245/74ACT245 contains eight non−inverting bidirectional buffers with 3−state outputs and is intended for bus−oriented applications. Current sinking capability both the A and B ports. The Transmit/Receive (T/R) input determines the direction of data flow through the bidirectional transceiver. Transmit (active− ...

Page 2

... Data Sheets for devices that differ from the typical input rise and fall times from 0 2.0 V; see individual Data Sheets for devices that differ from the typical input rise and fall times. IN MC74AC245, MC74ACT245 Parameter Parameter ′AC ′ACT ...

Page 3

... NOTE: I and I @ 3.0 V are guaranteed to be less than or equal to the respective limit @ 5 MC74AC245, MC74ACT245 74AC 74AC +25°C −40°C to ...

Page 4

... Current I †Minimum Dynamic OLD Output Current I OHD I Maximum Quiescent CC Supply Current *All outputs loaded; thresholds on input associated with output under test. †Maximum test duration 2.0 ms, one output loaded at a time. MC74AC245, MC74ACT245 74AC T = +25° (V) L Min Typ 3 ...

Page 5

... Output Enable Time PZH t Output Enable Time PZL t Output Disable Time PHZ t Output Disable Time PLZ *Voltage Range 5 5.0 V ±0.5 V. CAPACITANCE Symbol Parameter C Input Capacitance IN C Input/Output Capacitance I/O C Power Dissipation Capacitance PD MC74AC245, MC74ACT245 (V) Min 5.0 1 5.0 1 5.0 1 ...

Page 6

... MC74ACT245MG MC74ACT245MEL MC74ACT245MELG †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. *These packages are inherently Pb−Free. MC74AC245, MC74ACT245 Package PDIP−20 PDIP−20 (Pb−Free) PDIP−20 PDIP−20 (Pb− ...

Page 7

... PDIP− MC74AC245N AWLYYWWG MC74ACT245N AWLYYWWG 1 1 MC74AC245, MC74ACT245 MARKING DIAGRAMS SOIC−20W TSSOP− AC245 245 AWLYYWWG ALYWG ACT ACT245 245 AWLYYWWG ALYWG Assembly Location WL Wafer Lot YY Year WW Work Week Pb− ...

Page 8

... PLANE 0.25 (0.010 20X 0. 18X A1 MC74AC245, MC74ACT245 PACKAGE DIMENSIONS PDIP−20 N SUFFIX PLASTIC DIP PACKAGE CASE 738−03 ISSUE 0.25 (0.010 SOIC−20W DW SUFFIX CASE 751D−05 ...

Page 9

... G D 0.100 (0.004) −T− SEATING PLANE 16X 0.36 *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. MC74AC245, MC74ACT245 PACKAGE DIMENSIONS TSSOP−20 DT SUFFIX CASE 948E−02 ISSUE ...

Page 10

... Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada Email: orderlit@onsemi.com MC74AC245, MC74ACT245 PACKAGE DIMENSIONS SOEIAJ−20 M SUFFIX CASE 967−01 ...

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