UTC-IC U74LVC245

UNISONIC TECHNOLOGIES CO., LTD
U74LVC245
CMOS IC
OCTAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
„
DESCRIPTION
The U74LVC245 is designed for the communication between data
buses asynchronously. While the direction-control(DIR) is high, data
transmits from the A bus to the B bus. Data transmits from the B bus
to the A bus if DIR is low. The output-enable( OE ) will isolate the
device from the buses when high voltage is applied on it.
„
FEATURES
* Operate From 1.65V to 3.6V
* Input Accept Voltages to 5.5V
* Partial-Power-Down Mode Operation
„
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
U74LVC245L-D20-T
U74LVC245G-D20-T
U74LVC245L-P20-R
U74LVC245G-P20-R
U74LVC245L-P20-T
U74LVC245G-P20-T
U74LVC245L-S20-R
U74LVC245G-S20-R
U74LVC245L-S20-T
U74LVC245G-S20-T
www.unisonic.com.tw
Copyright © 2010 Unisonic Technologies Co., Ltd
Package
Packing
DIP-20
TSSOP-20
TSSOP-20
SOP-20
SOP-20
Tube
Tape Reel
Tube
Tape Reel
Tube
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U74LVC245
„
CMOS IC
PIN CONFIGURATION
DIR
A1
A2
A3
A4
A5
A6
A7
A8
GND
„
1
20
19
18
17
2
3
4
5
6
7
8
9
10
16
15
14
13
12
11
OE
B1
B2
B3
B4
B5
B6
B7
B8
FUNCTION TABLE (each gate)
INPUT
„
V CC
OE
DIR
H
L
L
×
H
L
FUNCTION
Isolation
Transmit data from A bus to B bus
Transmit data from B bus to A bus
LOGIC DIAGRAM (positive logic)
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U74LVC245
„
CMOS IC
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
VCC
-0.5~6.5
V
Input Voltage
VIN
-0.5~ 6.5
V
Voltage Applied To Output In High-Impedance or Power-off State
-0.5~6.5
VOUT
V
Voltage Applied to Output In High or Low State
-0.5~Vcc+0.5
Input Clamp Current
IIK
-50
mA
Output Clamp Current
IOK
-50
mA
Output Current
IOUT
±50
mA
Vcc or GND Current
ICC
±100
mA
Storage Temperature
TSTG
-65 ~ +150
℃
Note: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
„
RECOMMENDED OPERATING CONDITIONS
PARAMETER
SYMBOL
Supply Voltage
VCC
Input Voltage High-Level
VIH
Input Voltage Low-Level
VIL
Input Voltage
Output Voltage
„
TEST CONDITIONS
Operating
Data retention only
VCC = 1.65 V to 1.95 V
VCC = 2.3 V to 2.7 V
VCC = 2.7 V to 3.6 V
VCC = 1.65 V to 1.95 V
VCC = 2.3 V to 2.7 V
VCC = 2.7 V to 3.6 V
VIN
VOUT
MIN
1.65
1.5
TYP
MAX
3.6
UNIT
V
0.65*Vcc
V
1.7
2
0.35*Vcc
0
0
0.7
0.8
5.5
Vcc
V
MAX
UNIT
V
V
ELECTRICAL CHARACTERISTICS
PARAMETER
Output Voltage High-Level
Output Voltage Low-Level
Input Leakage Current
Power OFF Leakage Current
Input Leakage Current (For I/O
Ports)
Quiescent Supply Current
Additional Quiescent Supply
Current
Input Capacitance
SYMBOL
VOH
VOL
II(LEAK)
IOFF
TEST CONDITIONS
VCC=1.65V to 3.6V, IOH = -100uA
VCC=1.65V, IOH= –4mA
VCC=2.3V, IOH = –8mA
VCC=2.7V, IOH = –12mA
VCC=3V, IOH= –12mA
VCC=3V, IOH= –24mA
VCC=1.65V to 3.6V, IOL= 100uA
VCC=1.65V, IOL= 4mA
VCC=2.3V, IOL= 8mA
VCC=2.7V, IOL= 12mA
VCC=3V, IOL= 24mA
VCC=3.6V, VIN= 5.5 V or GND
VCC =0V, VIN or VCC=5.5V
V
0.1
0.24
0.3
0.4
0.55
±1
±1
uA
uA
V
IOZ
VCC=3.6V, VOUT= 0~5.5V
±1
uA
IQ
VCC=3.6V,VIN =VCC or GND IOUT= 0
VCC=3.6V, 3.6V≦VIN≦5.5V, IOUT=0
1
1
uA
500
uA
Δ IQ
CIN
VCC=2.7V to 3.6V, One input at VCC
-0.6V, Other inputs at VCC or GND
VCC=3.3V, VIN = VCC or GND
UNISONIC TECHNOLOGIES CO., LTD
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MIN
TYP
Vcc-0.2
1.29
1.9
2.2
2.4
2.3
4
pF
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SWITCHING CHARACTERISTICS
„
PARAMETER
From A to Y or From B to A
From
OE
From
OE A to A or B
„
CMOS IC
to A or B
SYMBOL
tPLH/tPHL
tPZL/tPZH
tPLZ/tPHZ
TEST CONDITIONS
VCC=1.8V ± 0.15V
VCC=2.5V ± 0.2V
VCC=2.7V
VCC=3.3V ± 0.3V
VCC=1.8V ± 0.15V
VCC=2.5V ± 0.2V
VCC=2.7V
VCC=3.3V ± 0.3V
VCC=1.8V ± 0.15V
VCC=2.5V ± 0.2V
VCC=2.7V
VCC=3.3V ± 0.3V
MIN
1
1
1
1.5
1
1
1
1.5
1
1
1
1.7
TYP
6
3.9
4.2
3.8
7
4.5
5.4
4.4
7.8
4
4.4
4.1
MAX
12.2
7.8
7.1
6.1
14.8
10
9.3
8.3
16.5
9
8.3
7.3
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
MIN
TYP
MAX
UNIT
OPERATING CHARACTERISTICS
PARAMETER
Power Dissipation Capacitance
SYMBOL
Cpd
TEST CONDITIONS
OE =0, f=10MHZ, VCC=1.8V
OE =0, f=10MHZ, VCC=2.5V
OE =0, f=10MHZ, VCC=3.3V
OE =1, f=10MHZ, VCC=1.8V
OE =1, f=10MHZ, VCC=2.5V
OE =1, f=10MHZ, VCC=3.3V
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
42
pF
43
pF
45
pF
1
pF
1
pF
2
pF
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„
CMOS IC
TEST CIRCUIT AND WAVEFORMS
VCC
VIN
tR/tF
VM
V△
CL
RL
1.8V ±0.15V
2.5V ±0.2V
2.7 V
3.3V ±0.3V
VCC
VCC
2.7 V
2.7 V
≤2ns
≤2ns
≤2.5ns
≤2.5ns
VCC/2
VCC/2
1.5V
1.5V
0.15V
0.15V
0.3V
0.3V
30 PF
30 PF
50 PF
50 PF
1 KΩ
500Ω
500Ω
500Ω
tPLH/tPHL
OPEN
OPEN
OPEN
OPEN
VEXT
tPZH/tPHZ
GND
GND
GND
GND
tPZL/tPLZ
2*VCC
2*VCC
6V
6V
Fig-1 Load circuitry
Fig-2 Propagation delay waves
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U74LVC245
CMOS IC
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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