UNISONIC TECHNOLOGIES CO., LTD U74HC595A

UNISONIC TECHNOLOGIES CO., LTD
U74HC595A
CMOS IC
8-BIT SERIAL-IN SHIFT
REGISTER WITH LATCHED
3-STATE PARALLEL OUTPUTS，
PROVIDING SERIAL OUTPUT

DESCRIPTION
The UTC 74HC595A contains an 8-bit register with
asynchronous reset input and an 8-bit latch with output. The Serial
Data Input (A) will shift into the internal shift register during every
LOW-to-HIGH transition on the Shift Clock. The latch will latch the
8-bit data from the shift register during the LOW-to-HIGH transition
on the Latch Clock. The shift register also provides a serial output.

FEATURES
* Operation Voltage Range:2~6V
* High Noise Immunity
* Output Compatibility with CMOS and TTL
* Specified from -40~+125°C

ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
U74HC595AL-D16-T
U74HC595AG-D16-T
U74HC595AG-S16-R
U74HC595AG-P16-R

Package
Packing
DIP-16
SOP-16
TSSOP-16
Tube
Tape Reel
Tape Reel
MARKING
DIP-16
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
SOP-16 / TSSOP-16
1 of 7
QW-R502-354.E
U74HC595A


CMOS IC
PIN CONFIGURATION
FUNCTION TABLE
Operation
INPUT
Serial Shift Latch Output
Reset
input A clock clock enable
L
X
X
L,H, 
L
Reset shift register
Shift data into shift
H
D
L,H, 

register
Shift register remains
H
X
L,H,  L,H, 
unchanged
Transfer shift register
contents to latch
H
X
L,H, 

register
Latch register remains
X
X
X
L,H, 
unchanged
Enable parallel outputs
X
X
X
X
Force outputs into high
X
X
X
X
impedance state
SR: shift register contents LR: latch register contents
D: data(L,H) logic level
: low-to-high
*: depends on Reset and Shift Clock inputs

L
OUTPUT
SR
LR
SQH
QA to QH
L
D SRA
SRNSRN+1
NC
L
NC
NC
SRGSRH
NC
L
NC
NC
NC
NC
L
NC
SRNLRN
NC
SRN
L
*
NC
*
NC
L
*
**
*
Enabled
H
*
**
*
Z
NC: unchanged
: high-to-low
**: depends on Latch Clock inputs
LOGIC DIAGRAM
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 7
QW-R502-354.E
U74HC595A

CMOS IC
ABSOLUTE MAXIMUM RATING (unless otherwise specified)(Note 2)
PARAMETER
Supply Voltage
Input Voltage
Output Voltage(active mode)
Input Clamp Current (VIN <0)
Output Clamp Current (VOUT <0)
Output Current
VCC or GND Current
RATINGS
UNIT
-0.5~7.0
V
-0.5~Vcc+0.5
V
-0.5~VCC+0.5
V
±20
mA
±20
mA
±35
mA
±75
mA
DIP-16
750
Power Dissipation
SOP-16
PD
500
mW
TSSOP-16
450
Storage Temperature
TSTG
-65 ~ +150
°C
Notes: 1. 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.
2. The input and output voltage ratings may be exceeded if the input and output current ratings are
observed.

SYMBOL
VCC
VIN
VOUT
IIK
IOK
IOUT
ICC
RECOMMENDED OPERATING COMDITIONS
PARAMETER
SYMBOL
VCC
VIN
VOUT
TOPR
Supply Voltage
Input Voltage
Output Voltage
Operating Temperature
Input Transition Rise or Fall Rate
VCC =2V
VCC =4.5V
VCC =6V
t R / tF
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
MIN
2
0
0
-40
TYP
MAX
6
VCC
VCC
125
1000
500
400
UNIT
V
V
V
°C
ns
ns
ns
3 of 7
QW-R502-354.E
U74HC595A

CMOS IC
ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL
HIGH-level input voltage
VIH
LOW-lever output voltage
VIL
High-Level Output Voltage,
QA-QH
VOH
Low-Level Output Voltage,
QA-QH
VOL
High-Level Output Voltage,
SQH
VOH
Low-Level Output Voltage,
SQH
VOL
Input Leakage Current
Output OFF -state current
Quiescent Supply Current
Input Capacitance
II(LEAK)
IOZ
IQ
CIN
TEST CONDITIONS
VCC=2V
VCC=3V
VCC=4.5V
VCC=6V
VCC=2V
VCC=3V
VCC=4.5V
VCC=6V
VCC=2V, IOH=-20μA
VCC=4.5V, IOH=-20μA
VCC=6V, IOH=-20μA
VCC=3V, IOH=-2.4mA
VCC=4.5V, IOH=-6mA
VCC=6V, IOH=-7.8mA
VCC=2V, IOL=20μA
VCC=4.5V, IOL=20μA
VCC=6V, IOL=20μA
VCC=3V, IOL=2.4mA
VCC=4.5V, IOL=6mA
VCC=6V, IOL=7.8mA
VCC=2V, IOH=-20μA
VCC=4.5V, IOH=-20μA
VCC=6V, IOH=-20μA
VCC=3V, IOH=-2.4mA
VCC=4.5V, IOH=-4mA
VCC=6V, IOH=-5.2mA
VCC=2V, IOL=20μA
VCC=4.5V, IOL=20μA
VCC=6V, IOL=20μA
VCC=3V, IOL=2.4mA
VCC=4.5V, IOL=4mA
VCC=6V, IOL=5.2mA
VCC=6V, VIN=VCC or GND
VCC=6V, VOUT=VCC or GND
VCC=6V, VIN=VCC or GND, IOUT=0
VCC=6V, VIN=VCC or GND
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
MIN
1.5
2.1
3.15
4.2
1.9
4.4
5.9
2.48
3.98
5.48
1.9
4.4
5.9
2.48
3.98
5.48
TYP MAX UNIT
V
V
V
V
0.5
V
0.9
V
1.35
V
1.8
V
V
V
V
V
V
V
0.1
V
0.1
V
0.1
V
0.26
V
0.26
V
0.26
V
V
V
V
V
V
V
0.1
V
0.1
V
0.1
V
0.26
V
0.26
V
0.26
V
±0.1 μA
±0.5 μA
4
μA
10
pF
4 of 7
QW-R502-354.E
U74HC595A

CMOS IC
DYNAMIC CHARACTERISTICS
PARAMETER
Maximum clock pulse frequency
SYMBOL
fmax
Propagation delay from input
(Latch Clock) to output(Qn)
tPHL/tPLH
Propagation delay from input
(Output Enable) to output(Qn)
tPZL/tPZH
Propagation delay from input
(Output Enable) to output(Qn)
tPLZ/tPHZ
Output transition time, SQH
tTLH/ tTHL
Propagation delay from input
(Reset) to output(SQH)
tPHL
Propagation delay from input
(Shift Clock) to output(SQH)
tPLH/tPHL
Output transition time, Qn
tTLH/ tTHL

TEST CONDITIONS
VCC=2V
VCC=3V
VCC=4.5V
VCC=6V
VCC=2V
VCC=3V
VCC=4.5V
VCC=6V
VCC=2V
VCC=3V
VCC=4.5V
VCC=6V
VCC=2V
VCC=3V
VCC=4.5V
VCC=6V
VCC=2V
VCC=3V
VCC=4.5V
VCC=6V
VCC=2V
VCC=3V
VCC=4.5V
VCC=6V
VCC=2V
VCC=3V
VCC=4.5V
VCC=6V
VCC=2V
VCC=3V
VCC=4.5V
VCC=6V
MIN
TYP
MAX UNIT
6
MHz
15
MHz
30
MHz
35
MHz
140
ns
100
ns
28
ns
24
ns
135
ns
90
ns
27
ns
23
ns
150
ns
100
ns
30
ns
26
ns
75
ns
27
ns
15
ns
13
ns
145
ns
100
ns
29
ns
25
ns
140
ns
100
ns
28
ns
24
ns
60
ns
23
ns
12
ns
10
ns
TEST CONDITIONS
No load
MIN
TYP
300
MAX UNIT
pF
OPERATING CHARACTERISTICS
PARAMETER
Power Dissipation Capacitance
SYMBOL
Cpd
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 7
QW-R502-354.E
U74HC595A

CMOS IC
TIMING DIAGRAM
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
6 of 7
QW-R502-354.E
U74HC595A

CMOS IC
TEST CIRCUIT AND WAVEFORMS
VCC
K1
From Output
CL
RL
K2
(Note 2)
Note 2: CL includes probe and jig capacitance. CL=50pF, RL=1KΩ
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
7 of 7
QW-R502-354.E