U74AHC640G-R20-T [UTC]
OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS;型号: | U74AHC640G-R20-T |
厂家: | Unisonic Technologies |
描述: | OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS 输出元件 |
文件: | 总7页 (文件大小:208K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
UNISONIC TECHNOLOGIES CO., LTD
U74HC640
CMOS IC
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
DESCRIPTION
The U74AHC640 is a octal bus transceivers with 3-state
outputs. It is designed for asynchronous two-way communication
between data buses. Depending on the direction-control (DIR) input,
data are transmitted from the A bus to the B bus or from the B bus to
the A bus.
When OE is high, the buses are effectively isolated. When
OE is low, the buses are enable.
FEATURES
* Wide Supply Voltage Range from 2V to 6V
* Typical tPD of 8ns at 6V, CL=50pF
* Low Power Consumption, ICC = 8μA (Max) at 5.5V
* ±7.8mA Output Driver at 6V
ORDERING INFORMATION
Ordering Number
Lead Free
Package
Packing
Halogen Free
U74AHC640L-R20-R
U74AHC640L-R20-T
U74AHC640G-R20-R
U74AHC640G-R20-T
SSOP-20
SSOP-20
Tape Reel
Tube
www.unisonic.com.tw
Copyright © 2011 Unisonic Technologies Co., Ltd
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U74HC640
CMOS IC
PIN CONFIGURATION
VCC
DIR
A1
1
2
3
4
5
20
19
18
17
OE
B1
B2
B3
A2
A3
A4
16
15
14
B4
B5
A5
6
A6
A7
7
8
13 B6
B7
12
A8
9
GND
10
11 B8
FUNCTION TABLE
INPUTS
OPERATION
OE
DIR
L
L
H
L
H
X
B data to A bus
A data to B bus
Isolation
LOGIC DIAGRAM
OE
DIR
A1
B1
To seven other transceivers
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U74HC640
CMOS IC
ABSOLUTE MAXIMUM RATING (unless otherwise specified)
PARAMETER
SYMBOL
VCC
RATINGS
-0.5~7
UNIT
Supply Voltage
Input Voltage
Output Voltage
V
VIN
-0.5~7
V
VOUT
IIK
-0.5~VCC +0.5
±20
V
Input Clamp Current (VIN<0)
Output Clamp Current (VOUT<0, or VOUT>VCC
Output Current
mA
mA
mA
mA
°C
)
IOK
±20
IOUT
ICC
±35
VCC or GND Current
±70
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 COMDITIONS
PARAMETER
Supply Voltage
SYMBOL
VCC
CONDITIONS
MIN
2
TYP
5
MAX
6
UNIT
V
VCC = 2V
1.5
3.15
4.2
High-Level Input Voltage
Low-Level Input Voltage
VIH
VIL
VCC = 4.5V
VCC = 6V
VCC = 2V
VCC = 4.5V
VCC = 6V
V
V
0.5
1.35
1.8
Input Voltage
VIN
0
0
VCC
VCC
1000
500
400
85
V
V
Output Voltage
VOUT
VCC = 2V
VCC = 4.5V
VCC = 6V
Input Transition Rise or Fall Rate
Operating Temperature
Δt/Δv
ns/V
°C
TA
-40
ELECTRICAL CHARACTERISTICS (TA =25°C , unless otherwise specified)
PARAMETER
SYMBOL
VOH
TEST CONDITIONS
MIN
1.9
TYP
1.998
4.499
5.999
4.3
MAX
UNIT
V
I
OH = -20μA, VCC = 2V
IOH = -20μA, VCC = 4.5V
IOH = -20μA, VCC = 6V
IOH = -6mA, VCC = 4.5V
IOH = -7.8mA, VCC = 6V
IOL = 20μA, VCC = 2V
4.4
High-Level Output Voltage
Low-Level Output Voltage
5.9
3.98
5.48
5.8
0.002
0.001
0.001
0.17
0.1
0.1
IOL = 20μA, VCC = 4.5V
IOL = 20μA, VCC = 6V
VOL
0.1
V
IOL = 6mA, VCC = 4.5V
IOL = 7.8mA, VCC = 6V
VIN = VCC or 0, VCC = 6V
VOUT = VCC or 0, VCC = 6V
VIN=VCC or 0,IOUT=0,VCC=6V
VIN=VCC or 0,VCC=2V to 6V
0.26
0.26
±100
±0.5
8
0.15
Input Leakage Current(DIR or OE )
High-Impedance State Current (A or B)
Quiescent Supply Current
II(LEAK)
IOZ
±0.1
μA
μA
μA
pF
±0.01
ICC
Input Capacitance (DIR or OE )
CIN
3
10
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U74HC640
CMOS IC
SWITCHING CHARACTERISTICS (TA =25°C)
CL=50pF, RL=1kΩ
PARAMETER
SYMBOL
tPD
TEST CONDITIONS
VCC=2V
MIN TYP MAX UNIT
29 105
Propagation Delay from A to B or B to A
Enable Times from OE to A or B
Disable Times from OE to A or B
Output Rise or fall Time
VCC=4.5V
VCC=6V
VCC=2V
VCC=4.5V
VCC=6V
VCC=2V
VCC=4.5V
VCC=6V
VCC=2V
VCC=4.5V
VCC=6V
10 21
18
ns
ns
ns
ns
8
109 230
27 46
20 39
40 150
18 30
16 26
20 60
tEN
tDIS
tT
8
6
12
10
CL=150pF, RL=1kΩ
PARAMETER
SYMBOL
tPD
TEST CONDITIONS
MIN TYP MAX UNIT
44 190
VCC=2V
VCC=4.5V
VCC=6V
VCC=2V
VCC=4.5V
VCC=6V
VCC=2V
VCC=4.5V
VCC=6V
Propagation Delay from A to B or B to A
Enable Times from OE to A or B
OUTPUT rise or fall Time
14 38
11 33
124 315
31 63
23 54
45 210
17 42
13 36
ns
ns
ns
tEN
tT
OPERATING CHARACTERISTICS (TA =25°C)
PARAMETER
Power Dissipation Capacitance
SYMBOL
CPD
TEST CONDITIONS
No load
TYP
40
UNIT
pF
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U74HC640
CMOS IC
TEST CIRCUIT AND WAVEFORMS
TEST
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
S1
Open
VLOAD
GND
Input
VΔ
VCC
VM
VLOAD
VCC
CL
RL
VIN
tR, tF
50pF
150pF
50pF
3.3V±0.3V
5V±0.5V
VCC
≤3ns
VCC/2
VCC/2
1kΩ
1kΩ
0.3V
0.5V
VCC
≤3ns
VCC
150pF
VCC
0V
90%
90%
Input
10%
10%
tR
tF
Voltage Waveforms Input Rise and Fall Times
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U74HC640
CMOS IC
TEST CIRCUIT AND WAVEFORMS(Cont.)
VIN
VM
Input
VM
0V
tPHL
tPLH
VOH
90%
VM
90%
Output
VM
10%
tPHL
10%
VOL
tR
tF
tPLH
VOH
90%
90%
VM
Output
VM
10%
10%
VOL
tR
tF
Voltage Waveforms Propagation Delay and Output Transition Times
VIN
0V
Input
VM
VM
tPZL
tPLZ
VLOAD
Output
VM
S1 at VLOAD
VOL+VΔ
VOL
tPHZ
tPZH
VOH
VOH-VΔ
Output
VM
S1 at GND
0V
VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES
Notes: 1. CL includes probe and jig capacitance.
2. All input pulses are supplied by generators having the following characteristics: PRR ≤1MHz, ZO = 50Ω,
tR=6ns, tF=6ns.
3. tPLH and tPHL are the same as tPD
4. tPLZ and tPHZ are the same as tDIS
5. tPZH and tPZL are the same as tEN
.
.
.
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U74HC640
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.
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