MC74AC245DTR2G

© Semiconductor Components Industries, LLC, 2015
February, 2015 − Rev. 8
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.
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 FUNCTION
OE Output Enable Input
T/R Transmit/Receive Input
A
0
−A
7
Side A 3−State Inputs or 3−State Outputs
B
0
−B
7
Side B 3−State Inputs or 3−State Outputs
TRUTH TABLES
Inputs
Outputs
OE T/R
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
Figure 1.
1920 18 17 16 15 14
21 34567
V
CC
13
8
12
9
11
10
OE
B
0
B
1
B
2
B
3
B
4
B
5
B
6
B
7
T/R A
0
A
1
A
2
A
3
A
4
A
5
A
6
A
7
GND
www.onsemi.com
SOIC−20W
DW SUFFIX
CASE 751D
TSSOP−20
DT SUFFIX
CASE 948E
1
1
See detailed ordering and shipping information in the package
dimensions section on page 6 of this data sheet.
ORDERING INFORMATION
See general marking information in the device marking
section on page 7 of this data sheet.
DEVICE MARKING INFORMATION
MC74AC245, MC74ACT245
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2
MAXIMUM RATINGS
Symbol Parameter Value Unit
V
CC
DC Supply Voltage (Referenced to GND) −0.5 to +7.0 V
V
IN
DC Input Voltage (Referenced to GND) −0.5 to V
CC
+0.5 V
V
OUT
DC Output Voltage (Referenced to GND) (Note 1) −0.5 to V
CC
+0.5 V
I
IK
DC Input Diode Current ±20 mA
I
OK
DC Output Diode Current ±50 mA
I
OUT
DC Output Sink/Source Current ±50 mA
I
CC
DC Supply Current, per Output Pin ±50 mA
I
GND
DC Ground Current, per Output Pin ±100 mA
T
STG
Storage Temperature Range *65 to )150
_C
T
L
Lead temperature, 1 mm from Case for 10 Seconds 260
_C
T
J
Junction Temperature Under Bias 140
_C
q
JA
Thermal Resistance (Note 2) SOIC
TSSOP
65.8
110.7
_C/W
MSL Moisture Sensitivity Level 1
F
R
Flammability Rating Oxygen Index: 30% − 35% UL 94 V−0 @ 0.125 in
V
ESD
ESD Withstand Voltage Human Body Model (Note 3)
Machine Model (Note 4)
Charged Device Model (Note 5)
> 2000
> 200
> 1000
V
I
Latchup
Latchup Performance Above V
CC
and Below GND at 85_C (Note 6)
±100 mA
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
1. I
OUT
absolute maximum rating must be observed.
2. The package thermal impedance is calculated in accordance with JESD 51−7.
3. Tested to EIA/JESD22−A114−A.
4. Tested to EIA/JESD22−A115−A.
5. Tested to JESD22−C101−A.
6. Tested to EIA/JESD78.
RECOMMENDED OPERATING CONDITIONS
Symbol Parameter Min Typ Max Unit
V
CC
Supply Voltage
AC 2.0 5.0 6.0
V
ACT 4.5 5.0 5.5
V
IN
, V
OUT
DC Input Voltage, Output Voltage (Ref. to GND) 0 V
CC
V
t
r
, t
f
Input Rise and Fall Time (Note 7)
AC Devices except Schmitt Inputs
V
CC
@ 3.0 V 150
V
CC
@ 4.5 V 40 ns/V
V
CC
@ 5.5 V 25
t
r
, t
f
Input Rise and Fall Time (Note 8)
ACT Devices except Schmitt Inputs
V
CC
@ 4.5 V 10
ns/V
V
CC
@ 5.5 V 8.0
T
A
Operating Ambient Temperature Range −40 25 85 °C
I
OH
Output Current − High −24 mA
I
OL
Output Current − Low 24 mA
Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond
the Recommended Operating Ranges limits may affect device reliability.
7. V
IN
from 30% to 70% V
CC
; see individual Data Sheets for devices that differ from the typical input rise and fall times.
8. V
IN
from 0.8 V to 2.0 V; see individual Data Sheets for devices that differ from the typical input rise and fall times.
MC74AC245, MC74ACT245
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3
DC CHARACTERISTICS
Symbol Parameter
V
CC
(V)
74AC 74AC
Unit Conditions
T
A
= +25°C
T
A
=
−40°C to
+85°C
Typ Guaranteed Limits
V
IH
Minimum High Level
Input Voltage
3.0 1.5 2.1 2.1 V
OUT
= 0.1 V
4.5 2.25 3.15 3.15 V or V
CC
− 0.1 V
5.5 2.75 3.85 3.85
V
IL
Maximum Low Level
Input Voltage
3.0 1.5 0.9 0.9 V
OUT
= 0.1 V
4.5 2.25 1.35 1.35 V or V
CC
− 0.1 V
5.5 2.75 1.65 1.65
V
OH
Minimum High Level
Output Voltage
3.0 2.99 2.9 2.9
I
OUT
= −50 mA
4.5 4.49 4.4 4.4 V
5.5 5.49 5.4 5.4
V
*V
IN
= V
IL
or V
IH
3.0 2.56 2.46 −12 mA
4.5 3.86 3.76 I
OH
−24 mA
5.5 4.86 4.76 −24 mA
V
OL
Maximum Low Level
Output Voltage
3.0 0.002 0.1 0.1
I
OUT
= 50 mA
4.5 0.001 0.1 0.1 V
5.5 0.001 0.1 0.1
V
*V
IN
= V
IL
or V
IH
3.0 0.36 0.44 12 mA
4.5 0.36 0.44 I
OL
24 mA
5.5 0.36 0.44 24 mA
I
IN
Maximum Input
Leakage Current
5.5 ±0.1 ±1.0
mA
V
I
= V
CC
, GND
I
OZT
Maximum
3-State
Current
V
I
(OE) = V
IL
, V
IH
5.5 ±0.6 ±6.0
mA
V
I
= V
CC
, GND
V
O
= V
CC
, GND
I
OLD
†Minimum Dynamic
Output Current
5.5 75 mA V
OLD
= 1.65 V Max
I
OHD
5.5 −75 mA V
OHD
= 3.85 V Min
I
CC
Maximum Quiescent
Supply Current
5.5 8.0 80.0
mA
V
IN
= V
CC
or GND
*All outputs loaded; thresholds on input associated with output under test.
Maximum test duration 2.0 ms, one output loaded at a time.
NOTE: I
IN
and I
CC
@ 3.0 V are guaranteed to be less than or equal to the respective limit @ 5.5 V V
CC
.

MC74AC245DTR2G

Mfr. #:
Manufacturer:
ON Semiconductor
Description:
Bus Transceivers Octal Bidirectional Transceiver
Lifecycle:
New from this manufacturer.
Delivery:
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