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74LVC245A PDF даташит

Спецификация 74LVC245A изготовлена ​​​​«ON Semiconductor» и имеет функцию, называемую «Low-Voltage CMOS Octal Transceiver».

Детали детали

Номер произв 74LVC245A
Описание Low-Voltage CMOS Octal Transceiver
Производители ON Semiconductor
логотип ON Semiconductor логотип 

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74LVC245A Даташит, Описание, Даташиты
74LVC245A
Low-Voltage CMOS Octal
Transceiver
With 5 V−Tolerant Inputs and Outputs
(3−State, Non−Inverting)
The 74LVC245A is a high performance, non−inverting octal
transceiver operating from a 1.2 to 3.6 V supply. High impedance TTL
compatible inputs significantly reduce current loading to input drivers
while TTL compatible outputs offer improved switching noise
performance. A VI specification of 5.5 V allows 74LVC245A inputs to
be safely driven from 5 V devices if VCC is less than 5.0 V. The
74LVC245A is suitable for memory address driving and all TTL level
bus oriented transceiver applications.
Current drive capability is 24 mA at both A and B ports. The
Transmit/Receive (T/R) input determines the direction of data flow
through the bi−directional transceiver. Transmit (active−HIGH)
enables data from A ports to B ports; Receive (active−LOW) enables
data from B to A ports. The Output Enable input, when HIGH,
disables both A and B ports by placing them in a HIGH Z condition.
Features
Designed for 1.2 to 3.6 V VCC Operation
5 V Tolerant − Interface Capability with 5 V TTL Logic
Supports Live Insertion and Withdrawal
IOFF Specification Guarantees High Impedance When VCC = 0 V
24 mA Output Sink and Source Capability
Near Zero Static Supply Current in All Three Logic States (10 mA)
Substantially Reduces System Power Requirements
ESD Performance: Human Body Model >2000 V
Machine Model >200 V
These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
www.onsemi.com
20
1
MARKING
DIAGRAM
20
TSSOP−20
DT SUFFIX
CASE 948E
1
LVC
245A
ALYWG
G
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = Pb−Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 7 of this data sheet.
© Semiconductor Components Industries, LLC, 2015
October, 2015 − Rev. 0
1
Publication Order Number:
74LVC245A/D









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74LVC245A Даташит, Описание, Даташиты
74LVC245A
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. Pinout (Top View)
PIN NAMES
PINS
FUNCTION
OE
T/R
A0−A7
B0−B7
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 TABLE
INPUTS
OE T/R
LL
LH
HX
OPERATING MODE
Non−Inverting
B Data to A Bus
A Data to B Bus
Z
H = High Voltage Level
L = Low Voltage Level
Z = High Impedance State
X = High or Low Voltage Level and Transitions are Acceptable
For ICC reasons, Do Not Float Inputs
OE 19
T/R 1
2
A0
3
A1
4
A2
5
A3
6
A4
7
A5
8
A6
9
A7
18
B0
17
B1
16
B2
15
B3
14
B4
13
B5
12
B6
11
B7
Figure 2. Logic Diagram
www.onsemi.com
2









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74LVC245A Даташит, Описание, Даташиты
74LVC245A
MAXIMUM RATINGS
Symbol
Parameter
Condition
Value
Unit
VCC
VI
VO
IIK
IOK
IO
ICC
IGND
TSTG
TL
DC Supply Voltage
DC Input Voltage
DC Output Voltage
DC Input Diode Current
DC Output Diode Current
DC Output Source/Sink Current
DC Supply Current Per Supply Pin
DC Ground Current Per Ground Pin
Storage Temperature Range
Lead Temperature, 1 mm from Case for
10 Seconds
Output in 3−State
Output in HIGH or LOW State (Note 1)
VI < GND
VO < GND
VO > VCC
−0.5 to +6.5
−0.5 VI +6.5
−0.5 VO +6.5
−0.5 VO VCC + 0.5
−50
−50
+50
±50
±100
±100
−65 to +150
TL = 260
V
V
V
mA
mA
mA
mA
mA
mA
°C
°C
TJ Junction Temperature Under Bias
TJ = 135
°C
qJA Thermal Resistance (Note 2)
110.7
°C/W
MSL Moisture Sensitivity
Level 1
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. IO absolute maximum rating must be observed.
2. Measured with minimum pad spacing on an FR4 board, using 10 mm−by−1 inch, 2 ounce copper trace no air flow.
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
VCC Supply Voltage
Min Typ Max Unit
Operating
Functional
1.65
1.2
3.6 V
3.6
VI Input Voltage
VO Output Voltage
HIGH or LOW State
3−State
0
0
0
5.5 V
VCC
V
5.5
IOH HIGH Level Output Current
VCC = 3.0 V − 3.6 V
VCC = 2.7 V − 3.0 V
−24 mA
−12
IOL LOW Level Output Current
VCC = 3.0 V − 3.6 V
VCC = 2.7 V − 3.0 V
24 mA
12
TA Operating Free−Air Temperature
−40
+125
°C
Dt/DV Input Transition Rise or Fall Rate
VCC = 1.2 to 2.7 V
VCC = 2.7 to 3.6 V
0
0
20 ns/V
10
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.
www.onsemi.com
3










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