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MC74ACT245MEL データシート(PDF) 1 Page - ON Semiconductor

部品番号 MC74ACT245MEL
部品情報  OCTAL BIDIRECTIONAL TRANSCEIVER WITH 3-STATE INPUTS/OUTPUTS
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メーカー  ONSEMI [ON Semiconductor]
ホームページ  http://www.onsemi.com
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© Semiconductor Components Industries, LLC, 2001
May, 2001 – Rev. 5
1
Publication Order Number:
MC74AC245/D
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.
Noninverting Buffers
Bidirectional Data Path
A and B Outputs Source/Sink 24 mA
′ACT245 Has TTL Compatible Inputs
Figure 1.
19
20
18
17
16
15
14
2
1
3
4
567
VCC
13
8
12
9
11
10
OE
B0
B1
B2
B3
B4
B5
B6
B7
T/R
A0
A1
A2
A3
A4
A5
A6
A7 GND
PIN ASSIGNMENT
PIN
FUNCTION
OE
Output Enable Input
T/R
Transmit/Receive Input
A0–A7
Side A 3–State Inputs or 3–State Outputs
B0–B7
Side B 3–State Inputs or 3–State Outputs
TRUTH TABLES
Inputs
Otpts
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
http://onsemi.com
1
20
PDIP–20
N SUFFIX
CASE 738
1
20
1
20
1
20
SO–20
DW SUFFIX
CASE 751
TSSOP–20
DT SUFFIX
CASE 948E
EIAJ–20
M SUFFIX
CASE 967
Device
Package
Shipping
ORDERING INFORMATION
MC74AC245N
PDIP–20
18 Units/Rail
MC74ACT245N
PDIP–20
18 Units/Rail
MC74AC245DW
SOIC–20
38 Units/Rail
MC74AC245DWR2
SOIC–20
1000 Tape & Reel
MC74ACT245DW
SOIC–20
38 Units/Rail
MC74ACT245DWR2
SOIC–20
1000 Tape & Reel
MC74AC245DT
TSSOP–20
75 Units/Rail
MC74AC245DTR2
TSSOP–20
2500 Tape & Reel
MC74ACT245DT
TSSOP–20
75 Units/Rail
MC74ACT245DTR2
TSSOP–20
2500 Tape & Reel
MC74AC245M
EIAJ–20
40 Units/Rail
MC74AC245MEL
EIAJ–20
2000 Tape & Reel
MC74ACT245M
EIAJ–20
40 Units/Rail
MC74ACT245MEL
EIAJ–20
2000 Tape & Reel
See general marking information in the device marking
section on page 6 of this data sheet.
DEVICE MARKING INFORMATION


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