UNISONIC TECHNOLOGIES CO., LTD
U74HC165
CMOS IC
8-BIT PARALLEL-LOAD SHIFT
REGISTER
DESCRIPTION
SOP-16
The U74HC165 is an 8-bit parallel-load shift register that,
when clocked, shifts the data toward a serial (QH) output.
Parallel-in access to each stage is provided by eight individual
direct data (A-H) inputs that are enabled by a low level at
shift/load (SH/ LD ) input. The U74HC165 also features a
clock-inhibit (CLK INH) function and a complementary serial ( QH )
output.
Clocking is accomplished by a low-to-high transition of the
TSSOP-16
clock (CLK) input while SH/ LD is held high and CLK INH is held
low. The functions of CLK and CLK INH are interchangeable.
Since a low CLK and a low-to-high transition of CLK INH also
accomplish clocking, CLK INH should be changed to the high
level only while CLK is high. Parallel loading is inhibited when
SH/ LD is held high. While SH/ LD is low, the parallel inputs to
the register are enabled independently of the levels of the CLK,
CLK INH, or serial (SER) inputs.
FEATURES
* Complementary Outputs
* Direct Overriding Load (Data) Inputs
* Gated Clock Inputs
* Parallel-to-Serial Data Conversion
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
U74HC165L-S16-R
U74HC165G-S16-R
U74HC165L-P16-R
U74HC165G-P16-R
Package
Packing
SOP-16
TSSOP-16
Tape Reel
Tape Reel
MARKING
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Copyright © 2023 Unisonic Technologies Co., Ltd
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QW-R502-A44.F
U74HC165
CMOS IC
PIN CONFIGURATION
PIN DESCRIPTION
PIN NO.
1
DESCRIPTION
SH/ LD
CLK
Asynchronous parallel load input (active LOW)
A to H
Parallel data inputs (also referred to as Dn)
7
QH
Complementary output from the last stage
8
9
10
15
16
GND
QH
SER
CLK/INH
VCC
2
3, 4, 5, 6
11. 12, 13, 14
PIN NAME
Clock input (LOW-to-HIGH edge-triggered)
Ground (0V)
Serial output from the last stage
Serial data input
Clock enable input (active LOW)
Positive supply voltage
FUNCTION TABLE
INPUTS
FUNCTION
CLK
CLK INH
SH/ LD
L
X
X
Parallel load
H
H
X
No change
H
X
H
No change
H
L
↑
Shift↑
H
↑
L
Shift↑
↑ Shift=content of each internal register shifts toward serial output QH. Data at SER is shifted into the first register.
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www.unisonic.com.tw
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QW-R502-A44.F
U74HC165
CMOS IC
LOGIC SYMBOL
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QW-R502-A44.F
U74HC165
LOGIC DIAGRAM (positive logic)
TYPICAL SHIFT, LOAD, AND INHIBIT SEQUENCE
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CMOS IC
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U74HC165
CMOS IC
ABSOLUTE MAXIMUM RATING (Unless otherwise specified)
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
VCC
-0.5 ~ 7
V
VCC or GND Current
ICC
±50
mA
Output Current
IOUT
±25
mA
Input Clamp Current
IIK
±20
mA
Output Clamp Current
IOK
±20
mA
Storage Temperature
TSTG
-65 ~ + 150
°C
Note: 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
Supply Voltage
SYMBOL
VCC
High-level Input Voltage
VIH
Low-level Input Voltage
VIL
Input Voltage
Output Voltage
tt
Operating Free-air Temperature
TA
VCC=2V
VCC=4.5V
VCC=6V
VCC=2V
VCC=4.5V
VCC=6V
0
0
VCC=2V
VCC=4.5V
VCC=6V
-40
TYP
5
MAX UNIT
6
V
V
V
V
0.5
V
1.35
V
1.8
V
VCC
V
VCC
V
1000
ns
500
ns
400
ns
+125 °C
THERMAL DATA
PARAMETER
Junction to Ambient
MIN
2
1.5
3.15
4.2
VIN
VOUT
Input Transition (Rise and Fall)
Time
TEST CONDITIONS
SYMBOL
SOP-16
TSSOP-16
RATINGS
73
110
θJA
UNIT
°C/W
°C/W
ELECTRICAL CHARACTERISTICS (Unless otherwise specified)
PARAMETER
SYMBOL
Output Voltage High-Level
VOH
Output Voltage Low-Level
VOL
Input Leakage Current
Quiescent Supply Current
II(LEAK)
ICC
TEST CONDITIONS
VCC=2V, IOH=-20μA
VCC=4.5V, IOH=-20μA
VCC=6V, IOH=-20μA
VCC=4.5V, IOH=-4mA
VCC=6V, IOH=-5.2mA
VCC=2V, IOL=20μA
VCC=4.5V, IOL=20μA
VCC=6V, IOL=20μA
VCC=4.5V, IOL=4mA
VCC=6V, IOL=5.2mA
VCC=6V, VIN= VCC or GND
VCC=6V, VIN=VCC or GND,
IOUT=0
UNISONIC TECHNOLOGIES CO., LTD
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MIN
1.9
4.4
5.9
3.98
5.48
TA=25°С
TA=-40~+125°С
UNIT
TYP MAX MIN TYP MAX
1.998
1.9
V
4.499
4.4
V
5.999
5.9
V
4.3
3.7
V
5.8
5.2
V
0.002 0.1
0.1
V
0.001 0.1
0.1
V
0.001 0.1
0.1
V
0.17 0.26
0.4
V
0.15 0.26
0.4
V
±0.1 ±1
±1
μA
8
160
μA
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U74HC165
CMOS IC
TIMING REQUIREMENTS
PARAMETER
Clock frequency
SYMBOL
fclock
SH/ LD
low
Pulse duration
tw
CLK high
or low
SH/ LD
high before
CLK↑
SER before
CLK↑
Setup time
CLK INH
low before
CLK↑
tSU
CLK INH
high before
CLK↑
Data
before
SH/ LD ↓
SER data
after CLK↑
Hold time
PAR data
after
th
SH/ LD ↓
TEST CONDITIONS
VCC=2V
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
VCC=2V
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
VCC=2V
VCC=4.5V
VCC=6V
VCC=2V
VCC=4.5V
VCC=6V
UNISONIC TECHNOLOGIES CO., LTD
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MIN
0
0
0
80
16
14
80
16
14
80
16
14
40
8
7
100
20
17
40
8
7
100
20
17
5
5
5
5
5
5
TA=-40~+125°С
TA=25°С
TYP MAX MIN TYP MAX
6
4.2
31
21
36
25
120
24
20
120
24
20
120
24
20
60
12
10
150
30
25
60
12
10
150
30
25
5
5
5
5
5
5
UNIT
MHz
MHz
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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U74HC165
CMOS IC
SWITCHING CHARACTERISTICS (tr = tf = 6ns, CL=50Pf, unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
6
31
36
TA=-40~+125°С
TA=25°С
TYP MAX MIN TYP MAX
13
4
50
20
62
24
80
150
250
20
30
50
UNIT
input (SH/ LD ) to output
VCC=2V
VCC=4.5V
VCC=6V
VCC=2V
VCC=4.5V
(QH or QH )
VCC=6V
16
26
43
ns
Propagation delay from
input (CLK) to output (QH
VCC=2V
VCC=4.5V
VCC=6V
VCC=2V
VCC=4.5V
VCC=6V
VCC=2V
VCC=4.5V
VCC=6V
75
15
13
75
15
13
38
8
6
150
30
26
150
30
26
75
15
13
250
50
43
180
36
31
110
22
19
ns
ns
ns
ns
ns
ns
ns
ns
ns
Minimum Frequency
Response
fmax
Propagation delay from
tPD
or QH )
Propagation delay from
input (H) to output (QH or
QH )
To Output (Any)
tt
MHz
MHz
MHz
ns
ns
OPERATING CHARACTERISTICS (Unless otherwise specified)
PARAMETER
Input Capacitance
Power Dissipation Capacitance
SYMBOL
TEST CONDITIONS
CI
VCC=2V to 6V
CPD
No load
UNISONIC TECHNOLOGIES CO., LTD
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MIN
TYP
3
75
MAX UNIT
10
pF
pF
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QW-R502-A44.F
U74HC165
CMOS IC
TEST CIRCUIT AND WAVEFORMS
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U74HC165
CMOS IC
TEST CIRCUIT AND WAVEFORMS (Cont.)
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. UTC reserves the right to
make changes to information published in this document, including without limitation specifications and
product descriptions, at any time and without notice. This document supersedes and replaces all
information supplied prior to the publication hereof.
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