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U74HCT640G-R20-T [UTC]

OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS; 八路总线收发器与3态输出
U74HCT640G-R20-T
型号： U74HCT640G-R20-T
厂家： Unisonic Technologies    Unisonic Technologies
描述：

OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
八路总线收发器与3态输出

总线收发器 输出元件
文件： 总6页 (文件大小：181K)
中文：  中文翻译
下载：  下载PDF数据表文档文件
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UNISONIC TECHNOLOGIES CO., LTD  
U74HCT640  
CMOS IC  
OCTAL BUS TRANSCEIVERS WITH  
3-STATE OUTPUTS  
SOP-20  
„
DESCRIPTION  
The U74HCT640 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 B bus to the  
A bus.  
SSOP-20  
When OE is high, the buses are effectively isolated. When  
OE is low, the buses are enable.  
TSSOP-20  
„
FEATURES  
* Inputs are TTL-voltage compatible  
* Typical tPD of 12ns at 5.5V, CL=50pF  
* Low power consumption, ICC = 8μA (Max) at 5.5V  
* ±6mA output driver at 4.5V  
„
ORDERING INFORMATION  
Ordering Number  
Lead Free  
Package  
Packing  
Halogen Free  
TSSOP-20  
TSSOP-20  
SSOP-20  
SSOP-20  
SOP-20  
Tape Reel  
Tube  
U74HCT640L-P20-R  
U74HCT640L-P20-T  
U74HCT640L-R20-R  
U74HCT640L-R20-T  
U74HCT640L-S20-R  
U74HCT640L-S20-T  
U74HCT640G-P20-R  
U74HCT640G-P20-T  
U74HCT640G-R20-R  
U74HCT640G-R20-T  
U74HCT640G-S20-R  
U74HCT640G-S20-T  
Tape Reel  
Tube  
Tape Reel  
Tube  
SOP-20  
www.unisonic.com.tw  
Copyright © 2012 Unisonic Technologies Co., Ltd  
1 of 6  
QW-R502-684.B  
U74HCT640  
CMOS IC  
„
PIN CONFIGURATION  
„
FUNCTION TABLE (each buffer)  
INPUTS  
OPERATION  
OE  
DIR  
L
L
H
L
H
X
B data to A bus  
A data to B bus  
Isolation  
„
LOGIC DIAGRAM (positive logic)  
OE  
DIR  
A1  
B1  
To seven other transceivers  
UNISONIC TECHNOLOGIES CO., LTD  
2 of 6  
QW-R502-684.B  
www.unisonic.com.tw  
U74HCT640  
CMOS IC  
„
ABSOLUTE MAXIMUM RATING  
PARAMETER  
SYMBOL  
VCC  
RATINGS  
-0.5~7  
UNIT  
V
Supply Voltage  
Input Voltage  
VIN  
-0.5~7  
V
Output Voltage  
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  
4.5  
2
TYP MAX UNIT  
5
5.5  
V
V
High-Level Input Voltage  
Low-Level Input Voltage  
Input Voltage  
VIH  
VCC = 4.5V to 5.5V  
VIL  
VCC = 4.5V to 5.5V  
VCC = 4.5V  
0
0.8  
VCC  
VCC  
500  
85  
V
VIN  
0
V
Output Voltage  
VOUT  
Δt/Δv  
TA  
0
V
Input Transition Rise or Fall Rate  
Operating Temperature  
0
ns/V  
°C  
-40  
„
ELECTRICAL CHARACTERISTICS (TA =25°C , unless otherwise specified)  
PARAMETER  
SYMBOL  
VOH  
TEST CONDITIONS  
MIN  
4.4  
TYP MAX UNIT  
I
OH = -20μA, VCC = 4.5V  
4.499  
V
High-Level Output Voltage  
Low-Level Output Voltage  
IOH = -6mA, VCC = 4.5V  
IOL = 20μA, VCC = 4.5V  
IOL = 6mA, VCC = 4.5V  
3.98  
4.30  
0.001  
0.17  
0.1  
VOL  
V
0.26  
Input Leakage Current  
(DIR or OE )  
II(LEAK)  
VIN = VCC or 0, VCC = 5.5V  
VOUT = VCC or 0, VCC = 5.5V  
±0.1 ±100  
μA  
High-Impedance State Current  
(A or B)  
IOZ  
ICC  
±0.01 ±0.5  
8
μA  
μA  
mA  
pF  
Quiescent Supply Current  
Additional Quiescent Supply  
Current  
VIN=VCC or 0, IOUT = 0, VCC = 5.5V  
One input at 0.5V or 2.4V,  
other inputs at 0V or VCC, VCC =5.5V  
ΔICC  
CIN  
1.4  
3
2.4  
10  
Input Capacitance (DIR or OE )  
VIN = VCC or 0, VCC=4.5V to 5.5V  
UNISONIC TECHNOLOGIES CO., LTD  
3 of 6  
QW-R502-684.B  
www.unisonic.com.tw  
U74HCT640  
CMOS IC  
„
SWITCHING CHARACTERISTICS (TA =25°C)  
PARAMETER  
SYMBOL  
tPD  
TEST CONDITIONS  
VCC=4.5V, CL=50pF, RL=1kΩ  
VCC=5.5V, CL=50pF, RL=1kΩ  
VCC=4.5V, CL=50pF, RL=1kΩ  
VCC=5.5V, CL=50pF, RL=1kΩ  
VCC=4.5V, CL=50pF, RL=1kΩ  
VCC=5.5V, CL=50pF, RL=1kΩ  
VCC=4.5V, CL=50pF, RL=1kΩ  
VCC=5.5V, CL=50pF, RL=1kΩ  
MIN TYP MAX UNIT  
14  
12  
27  
24  
20  
18  
9
21  
18  
35  
32  
30  
26  
12  
11  
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  
ns  
ns  
ns  
ns  
tEN  
tDIS  
tT  
8
„
SWITCHING CHARACTERISTICS (TA =25°C)  
PARAMETER  
SYMBOL  
tPD  
TEST CONDITIONS  
MIN TYP MAX UNIT  
V
CC=4.5V, CL=150pF, RL=1kΩ  
17  
15  
31  
28  
17  
14  
27  
24  
45  
41  
42  
38  
Propagation delay from A to B or B to A  
Enable times from OE to A or B  
Output rise or fall time  
ns  
ns  
ns  
VCC=5.5V, CL=150pF, RL=1kΩ  
VCC=4.5V, CL=150pF, RL=1kΩ  
VCC=5.5V, CL=150pF, RL=1kΩ  
VCC=4.5V, CL=150pF, RL=1kΩ  
VCC=5.5V, CL=150pF, RL=1kΩ  
tEN  
tT  
„
OPERATING CHARACTERISTICS (TA =25°C)  
PARAMETER  
Power dissipation capacitance  
SYMBOL  
CPD  
TEST CONDITIONS  
No load  
TYP  
40  
UNIT  
pF  
UNISONIC TECHNOLOGIES CO., LTD  
4 of 6  
QW-R502-684.B  
www.unisonic.com.tw  
U74HCT640  
CMOS IC  
„
TEST CIRCUIT AND WAVEFORMS  
TEST  
tPLH/tPHL  
tPLZ/tPZL  
tPHZ/tPZH  
S1  
Open  
VLOAD  
GND  
Input  
VCC  
VM  
VLOAD  
VCC  
CL  
RL  
VΔ  
VIN  
tR, tF  
50pF  
5V±0.5V  
VCC  
≤6ns  
VCC/2  
1kΩ  
0.5V  
150pF  
VCC  
90%  
90%  
Input  
10%  
10%  
0V  
tR  
tF  
UNISONIC TECHNOLOGIES CO., LTD  
5 of 6  
QW-R502-684.B  
www.unisonic.com.tw  
U74HCT640  
CMOS IC  
„
TEST CIRCUIT AND WAVEFORMS(Cont.)  
VIN  
Input  
VM  
VM  
0V  
tPLH  
tPHL  
VOH  
90%  
VM  
90%  
Output  
VM  
10%  
10%  
tPHL  
90%  
VOL  
tR  
tF  
tPLH  
VOH  
90%  
VM  
V
Output  
M
10%  
10%  
VOL  
tR  
tF  
Voltage Waveforms  
Propagation Delay and Output Transition Times  
VIN  
V
Input  
V
M
M
0
V
tPZL  
tPLZ  
VLOAD  
V
Output  
M
VOL+VΔ  
VOH+VΔ  
S1 at VLOAD  
VOL  
VOH  
tPZH  
tPHZ  
V
Output  
M
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  
.
.
.
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  
6 of 6  
QW-R502-684.B  
www.unisonic.com.tw  

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