74LVC245A D

74LVC245A
Low-Voltage CMOS Octal
Transceiver
With 5 V−Tolerant Inputs and Outputs
(3−State, Non−Inverting)
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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
•
•
•
•
•
•
•
•
MARKING
DIAGRAM
20
LVC
245A
ALYWG
G
TSSOP−20
DT SUFFIX
CASE 948E
20
1
1
A
L
Y
W
G
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
(Note: Microdot may be in either location)
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
ORDERING INFORMATION
IOFF Specification Guarantees High Impedance When VCC = 0 V
See detailed ordering and shipping information in the package
dimensions section on page 7 of this data sheet.
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
© Semiconductor Components Industries, LLC, 2015
October, 2015 − Rev. 0
1
Publication Order Number:
74LVC245A/D
74LVC245A
VCC
OE
B0
B1
B2
B3
B4
B5
B6
B7
20
19
18
17
16
15
14
13
12
11
OE 19
T/R 1
A0
2
18
1
2
3
4
5
6
7
T/R
A0
A1
A2
A3
A4
A5
8
9
10
A6
A7
GND
A1
3
17
Figure 1. Pinout (Top View)
A2
16
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
A3
13
OE
T/R
OPERATING MODE
Non−Inverting
L
L
B Data to A Bus
L
H
A Data to B Bus
H
X
Z
A6
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2
B6
9
11
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
B5
8
12
A7
B4
7
TRUTH TABLE
INPUTS
B3
6
14
A5
B2
5
15
A4
B1
4
PIN NAMES
PINS
B0
Figure 2. Logic Diagram
B7
74LVC245A
MAXIMUM RATINGS
Symbol
VCC
Parameter
Condition
Value
Unit
−0.5 to +6.5
V
−0.5 ≤ VI ≤ +6.5
V
Output in 3−State
−0.5 ≤ VO ≤ +6.5
V
Output in HIGH or LOW State (Note 1)
−0.5 ≤ VO ≤ VCC + 0.5
DC Supply Voltage
VI
DC Input Voltage
VO
DC Output Voltage
IIK
DC Input Diode Current
VI < GND
−50
mA
IOK
DC Output Diode Current
VO < GND
−50
mA
VO > VCC
+50
mA
IO
DC Output Source/Sink Current
±50
mA
ICC
DC Supply Current Per Supply Pin
±100
mA
IGND
DC Ground Current Per Ground Pin
±100
mA
TSTG
Storage Temperature Range
−65 to +150
°C
TL
Lead Temperature, 1 mm from Case for
10 Seconds
TL = 260
°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
VCC
Parameter
Min
Supply Voltage
Operating
Functional
Max
Unit
3.6
3.6
V
0
5.5
V
0
0
VCC
5.5
V
1.65
1.2
Typ
VI
Input Voltage
VO
Output Voltage
HIGH or LOW State
3−State
IOH
HIGH Level Output Current
VCC = 3.0 V − 3.6 V
VCC = 2.7 V − 3.0 V
−24
−12
mA
IOL
LOW Level Output Current
VCC = 3.0 V − 3.6 V
VCC = 2.7 V − 3.0 V
24
12
mA
TA
Operating Free−Air Temperature
−40
+125
°C
Dt/DV
Input Transition Rise or Fall Rate
0
0
20
10
ns/V
VCC = 1.2 to 2.7 V
VCC = 2.7 to 3.6 V
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.
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74LVC245A
DC ELECTRICAL CHARACTERISTICS
−40 to +855C
Symbol
VIH
VIL
VOH
VOL
II
Parameter
HIGH−level input voltage
LOW−level input voltage
HIGH−level output voltage
LOW−level output voltage
Input leakage current
−40 to +1255C
Conditions
Min
Typ
(Note 3)
Max
Min
Typ
(Note 3)
Max
Unit
VCC = 1.2 V
1.08
−
−
1.08
−
−
V
VCC = 1.65 V to 1.95 V
0.65 x
VCC
−
−
0.65 x
VCC
−
−
VCC = 2.3 V to 2.7 V
1.7
−
−
1.7
−
−
VCC = 2.7 V to 3.6 V
2.0
−
−
2.0
−
−
VCC = 1.2 V
−
−
0.12
−
−
0.12
VCC = 1.65 V to 1.95 V
−
−
0.35 x
VCC
−
−
0.35 x
VCC
VCC = 2.3 V to 2.7 V
−
−
0.7
−
−
0.7
VCC = 2.7 V to 3.6 V
−
−
0.8
−
−
0.8
−
−
−
IO = −100 mA;
VCC = 1.65 V to 3.6 V
VI = VIH or VIL
VCC −
0.2
−
−
VCC −
0.3
−
−
IO = −4 mA; VCC = 1.65 V
1.2
−
−
1.05
−
−
IO = −8 mA; VCC = 2.3 V
1.8
−
−
1.65
−
−
IO = −12 mA; VCC = 2.7 V
2.2
−
−
2.05
−
−
IO = −18 mA; VCC = 3.0 V
2.4
−
−
2.25
−
−
IO = −24 mA; VCC = 3.0 V
2.2
−
−
2.0
−
−
−
−
−
VI = VIH or VIL
V
V
V
IO = 100 mA;
VCC = 1.65 V to 3.6 V
−
−
0.2
−
−
0.3
IO = 4 mA; VCC = 1.65 V
−
−
0.45
−
−
0.65
IO = 8 mA; VCC = 2.3 V
−
−
0.6
−
−
0.8
IO = 12 mA; VCC = 2.7 V
−
−
0.4
−
−
0.6
IO = 24 mA; VCC = 3.0 V
−
−
0.55
−
−
0.8
VI = 5.5 V or GND
VCC = 3.6 V
−
±0.1
±5
−
±0.1
±20
mA
IOZ
OFF−state output current
VI = VIH or VIL; VO = 5.5 V or
GND; VCC = 3.6 V
−
±0.1
±5
−
±0.1
±20
mA
IOFF
Power−off leakage current
VI or VO = 5.5 V; VCC = 0 V
−
±0.1
±10
−
±0.1
±20
mA
ICC
Supply current
VI = VCC or GND; IO = 0 A;
VCC = 3.6 V
−
0.1
10
−
0.1
40
mA
ICC
Additional supply current
per input pin; VI = VCC − 0.6 V;
IO = 0 A; VCC = 2.7 V to 3.6 V
−
5
500
−
5
5000
mA
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
3. All typical values are measured at TA = 25°C and VCC = 3.3 V, unless stated otherwise.
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74LVC245A
AC ELECTRICAL CHARACTERISTICS (tR = tF = 2.5 ns)
−40 to +855C
Symbol
tpd
ten
tdis
tsk(0)
4.
5.
6.
7.
8.
Parameter
Propagation Delay (Note 5)
An to Bn, Bn to An
Enable Time (Note 6)
OE to An, Bn
Disable Time (Note 7)
OE to An, Bn
Conditions
Min
Typ
(Note 4)
−40 to +1255C
Max
Min
Typ
(Note 4)
Max
Unit
ns
VCC = 1.2 V
−
17.0
−
−
−
−
VCC = 1.65 V to 1.95 V
1.5
6.5
14.6
1.0
−
16.9
VCC = 2.3 V to 2.7 V
1.0
3.4
7.6
1.0
−
8.7
VCC = 2.7 V
1.0
3.4
7.3
1.0
−
9.5
VCC = 3.0 V to 3.6 V
1.0
2.9
6.3
1.0
−
8.0
VCC = 1.2 V
−
22.0
−
−
−
−
VCC = 1.65 V to 1.95 V
1.0
8.3
19.5
1.0
−
22.5
VCC = 2.3 V to 2.7 V
1.0
4.6
10.7
1.0
−
12.4
VCC = 2.7 V
1.0
4.8
9.5
0.5
−
12.0
VCC = 3.0 V to 3.6 V
0.5
3.7
8.5
0.5
−
11.0
VCC = 1.2 V
−
12.0
−
−
−
−
VCC = 1.65 V to 1.95 V
1.0
5.5
12.3
1.0
−
14.2
VCC = 2.3 V to 2.7 V
1.0
3.1
7.1
1.0
−
8.2
VCC = 2.7 V
1.0
3.9
8.0
0.5
−
10.0
VCC = 3.0 V to 3.6 V
0.5
3.6
7.0
0.5
−
9.0
−
−
1.0
−
−
1.5
Output Skew Time (Note 8)
ns
ns
ns
Typical values are measured at TA = 25°C and VCC = 3.3 V, unless stated otherwise.
tpd is the same as tPLH and tPHL.
ten is the same as tPZL and tPZH.
tdis is the same as tPLZ and tPHZ.
Skew between any two outputs of the same package switching in the same direction. This parameter is guaranteed by design.
DYNAMIC SWITCHING CHARACTERISTICS
TA = +25°C
Symbol
Characteristic
Condition
Min
Typ
Max
Unit
VOLP
Dynamic LOW Peak Voltage (Note 9)
VCC = 3.3 V, CL = 50 pF, VIH = 3.3 V, VIL = 0 V
VCC = 2.5 V, CL = 30 pF, VIH = 2.5 V, VIL = 0 V
0.8
0.6
V
V
VOLV
Dynamic LOW Valley Voltage (Note 9)
VCC = 3.3 V, CL = 50 pF, VIH = 3.3 V, VIL = 0 V
VCC = 2.5 V, CL = 30 pF, VIH = 2.5 V, VIL = 0 V
−0.8
−0.6
V
V
9. Number of outputs defined as “n”. Measured with “n−1” outputs switching from HIGH−to−LOW or LOW−to−HIGH. The remaining output is
measured in the LOW state.
CAPACITIVE CHARACTERISTICS
Symbol
Parameter
Condition
Typical
Unit
CIN
Input Capacitance (OE, T/R)
VCC = 3.3 V, VI = 0 V or VCC
4.0
pF
CI/O
Input/Output Capacitance
VCC = 3.3 V, VI = 0 V or VCC
10.0
pF
CPD
Power Dissipation Capacitance
(Note 10)
Per input; VI = GND or VCC
VCC = 1.65 V to 1.95 V
pF
7.7
VCC = 2.3 V to 2.7 V
11.3
VCC = 3.0 V to 3.6 V
14.4
10. CPD is used to determine the dynamic power dissipation (PD in mW).
PD = CPD x VCC2 x fi x N + S(CL x VCC2 x fo) where:
fi = input frequency in MHz; fo = output frequency in MHz
CL = output load capacitance in pF
VCC = supply voltage in Volts
N = number of outputs switching
S(CL x VCC2 x fo) = sum of the outputs.
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5
74LVC245A
VCC
OE, T/R
Vmi
VCC
An, Bn
Vmi
0V
Vmi
tPZH
0V
tPLH
Vmi
An, Bn
tPHL
tPHZ
VOH
VHZ
Vmo
VOH
Bn, An
Vmo
Vmo
tPZL
tPLZ
VOL
An, Bn
WAVEFORM 1 − PROPAGATION DELAYS
tR = tF = 2.5 ns, 10% to 90%; f = 1 MHz; tW = 500 ns
Vmo
VLZ
VOL
WAVEFORM 2 − OUTPUT ENABLE AND DISABLE TIMES
tR = tF = 2.5 ns, 10% to 90%; f = 1 MHz; tW = 500 ns
Figure 3. AC Waveforms
VCC
Symbol
1.2 V
1.8 V + 0.15 V
2.5 V + 0.2 V
2.7 V
3.3 V + 0.3 V
VI
VCC
VCC
VCC
2.7 V
2.7 V
Vmi
VCC/2
VCC/2
VCC/2
1.5 V
1.5 V
Vmo
VCC/2
VCC/2
VCC/2
1.5 V
1.5 V
VHZ
VOL + 0.15 V
VOL + 0.15 V
VOL + 0.15 V
VOL + 0.3 V
VOL + 0.3 V
VLZ
VOH − 0.15 V
VOH − 0.15 V
VOH − 0.15 V
VOH − 0.3 V
VOH − 0.3 V
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74LVC245A
VCC
VEXT
OPEN
GND
R1
PULSE
GENERATOR
DUT
RT
CL
RL
CL includes jig and probe capacitance
RT = ZOUT of pulse generator (typically 50 Q)
R1 = RL
Supply Voltage
Input
VEXT
Load
VCC (V)
VI
tr, tf
CL
RL
tPLH, tPHL
tPLZ, tPZL
tPHZ, tPZH
1.2
VCC
≤ 2 ns
30 pF
1 kQ
Open
2 x VCC
GND
1.65 − 1.95
VCC
≤ 2 ns
30 pF
1 kQ
Open
2 x VCC
GND
2.3 − 2.7
VCC
≤ 2 ns
30 pF
500 Q
Open
2 x VCC
GND
2.7
2.7 V
≤ 2.5 ns
50 pF
500 Q
Open
2 x VCC
GND
3.0 − 3.6
2.7 V
≤ 2.5 ns
50 pF
500 Q
Open
2 x VCC
GND
Figure 4. Test Circuit
ORDERING INFORMATION
Device
74LVC245ADTR2G
Package
Shipping†
TSSOP−20
(Pb−Free)
2500 / Tape & Reel
†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.
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7
74LVC245A
PACKAGE DIMENSIONS
TSSOP−20
CASE 948E−02
ISSUE C
20X
0.15 (0.006) T U
2X
K REF
0.10 (0.004)
S
L/2
20
M
T U
S
V
K
K1
ÍÍÍÍ
ÍÍÍÍ
ÍÍÍÍ
S
J J1
11
B
L
SECTION N−N
−U−
PIN 1
IDENT
0.25 (0.010)
N
1
10
M
0.15 (0.006) T U
S
A
−V−
N
F
DETAIL E
C
G
D
H
DETAIL E
0.100 (0.004)
−T− SEATING
PLANE
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION:
MILLIMETER.
3. DIMENSION A DOES NOT INCLUDE
MOLD FLASH, PROTRUSIONS OR GATE
BURRS. MOLD FLASH OR GATE BURRS
SHALL NOT EXCEED 0.15 (0.006) PER SIDE.
4. DIMENSION B DOES NOT INCLUDE
INTERLEAD FLASH OR PROTRUSION.
INTERLEAD FLASH OR PROTRUSION
SHALL NOT EXCEED 0.25 (0.010) PER SIDE.
5. DIMENSION K DOES NOT INCLUDE
DAMBAR PROTRUSION. ALLOWABLE
DAMBAR PROTRUSION SHALL BE 0.08
(0.003) TOTAL IN EXCESS OF THE K
DIMENSION AT MAXIMUM MATERIAL
CONDITION.
6. TERMINAL NUMBERS ARE SHOWN FOR
REFERENCE ONLY.
7. DIMENSION A AND B ARE TO BE
DETERMINED AT DATUM PLANE −W−.
MILLIMETERS
INCHES
DIM MIN
MAX
MIN
MAX
A
6.40
6.60 0.252
0.260
B
4.30
4.50 0.169
0.177
C
--1.20
--0.047
D
0.05
0.15 0.002
0.006
F
0.50
0.75 0.020
0.030
G
0.65 BSC
0.026 BSC
−W−
H
0.27
0.37
0.011
0.015
J
0.09
0.20 0.004
0.008
J1
0.09
0.16 0.004
0.006
K
0.19
0.30 0.007
0.012
K1
0.19
0.25 0.007
0.010
L
6.40 BSC
0.252 BSC
M
0_
8_
0_
8_
SOLDERING FOOTPRINT*
7.06
1
0.65
PITCH
16X
0.36
16X
1.26
DIMENSIONS: MILLIMETERS
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
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8
74LVC245A
ON Semiconductor and the
are registered trademarks of Semiconductor Components Industries, LLC (SCILLC) or its subsidiaries in the United States and/or other countries.
SCILLC owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed
at www.onsemi.com/site/pdf/Patent−Marking.pdf. SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation
or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and
specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets
and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each
customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended,
or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which
the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or
unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and
expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim
alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable
copyright laws and is not for resale in any manner.
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For additional information, please contact your local
Sales Representative
74LVC245A/D