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What is MC74AC245?

This electronic component, produced by the manufacturer "ON Semiconductor", performs the same function as "OCTAL BIDIRECTIONAL TRANSCEIVER".


MC74AC245 Datasheet PDF - ON Semiconductor

Part Number MC74AC245
Description OCTAL BIDIRECTIONAL TRANSCEIVER
Manufacturers ON Semiconductor 
Logo ON Semiconductor Logo 


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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 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
Noninverting Buffers
Bidirectional Data Path
A and B Outputs Source/Sink 24 mA
ACT245 has TTL Compatible Inputs
These are Pb−Free Devices
PIN ASSIGNMENT
PIN
OE
T/R
A0−A7
B0−B7
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
TRUTH TABLES
Inputs
OE T/R
Outputs
L L Bus B Data to Bus A
L H Bus A Data to Bus B
H X High Z State
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
www.onsemi.com
SOIC−20W
DW SUFFIX
CASE 751D
1
TSSOP−20
DT SUFFIX
CASE 948E
1
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 6 of this data sheet.
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 7 of this data sheet.
VCC OE B0 B1 B2 B3 B4 B5 B6 B7
20 19 18 17 16 15 14 13 12 11
1 2 3 4 5 6 7 8 9 10
T/R A0 A1 A2 A3 A4 A5 A6 A7 GND
Figure 1.
© Semiconductor Components Industries, LLC, 2015
February, 2015 − Rev. 8
1
Publication Order Number:
MC74AC245/D

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MC74AC245 equivalent
MC74AC245, MC74ACT245
AC CHARACTERISTICS (For Figures and Waveforms − See AND8277/D at www.onsemi.com)
74ACT
Symbol
Parameter
VCC*
(V)
TA = +25°C
CL = 50 pF
tPLH Propagation Delay, An to Bn or Bn to An
tPHL Propagation Delay, An to Bn or Bn to An
tPZH
Output Enable Time
tPZL Output Enable Time
tPHZ
Output Disable Time
tPLZ Output Disable Time
*Voltage Range 5.0 V is 5.0 V ±0.5 V.
Min Typ Max
5.0 1.5 4.0 7.5
5.0 1.5 4.0 8.0
5.0 1.5 5.0 10
5.0 1.5 5.5 10
5.0 1.5 5.5 10
5.0 2.0 5.0 10
74ACT
TA = −40°C
to +85°C
CL = 50 pF
Min Max
1.5 8.0
1.0 9.0
1.5 11.0
1.5 12.0
1.0 11.0
1.5 11.0
Unit
ns
ns
ns
ns
ns
ns
Fig.
No.
3−5
3−5
3−7
3−8
3−7
3−8
CAPACITANCE
Symbol
Parameter
CIN Input Capacitance
CI/O Input/Output Capacitance
CPD Power Dissipation Capacitance
Value
Typ
4.5
15
45
Unit
pF
pF
pF
Test Conditions
VCC = 5.0 V
VCC = 5.0 V
VCC = 5.0 V
www.onsemi.com
5


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Part Details

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