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UNISONIC TECHNOLOGIES CO., LTD U74HC595A
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.
CMOS IC
FEATURES
* Operation Voltage Range:2~6V * High Noise Immunity * Output Compatibility with CMOS and TTL * Specified from -40~+125C * Halogen Free
ORDERING INFORMATION
Ordering Number U74HC595AG-S16-R Package SOP-16 Packing Tape Reel
www.unisonic.com.tw Copyright (c) 2009 Unisonic Technologies Co., Ltd
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PIN CONFIGURATION
CMOS IC
FUNCTION TABLE
INPUT Operation Reset Serial Shift input A clock Latch Output clock enable SR OUTPUT LR SQH QA to QH NC NC NC SRN NC Enabled Z
Reset shift register L X X L,H, L L NC L D SRA Shift data into shift H D L,H, L NC SRG SRH register SRN SRN+1 Shift register remains H X L,H, L,H, L NC NC NC unchanged Transfer shift register contents to latch H X L,H, L NC SRN LRN NC register Latch register remains X X X L,H, L * NC * unchanged Enable parallel outputs X X X X L * ** * Force outputs into high X X X X H * ** * impedance state SR: shift register contents LR: latch register contents NC: unchanged D: data(L,H) logic level : low-to-high : high-to-low *: depends on Reset and Shift Clock inputs **: depends on Latch Clock inputs
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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LOGIC DIAGRAM
CMOS IC
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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U74HC595A
ABSOLUTE MAXIMUM RATING (unless otherwise specified)(Note 2)
PARAMETER Supply Voltage Input Voltage Output Voltage(active mode) SYMBOL VCC VIN VOUT IIK IOK IOUT ICC
CMOS IC
RATINGS UNIT -0.5~7.0 V -0.5~Vcc+0.5 V -0.5~VCC+0.5 V Input Clamp Current (VIN <0) 20 mA Output Clamp Current (VOUT <0) 20 mA Output Current 35 mA VCC or GND Current 75 mA Power Dissipation 500 mW PD Derate above 65C~125C 7 mW 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.
RECOMMENDED OPERATING COMDITIONS
PARAMETER Supply Voltage Input Voltage Output Voltage Operating Temperature Input Transition Rise or Fall Rate VCC =2V VCC =4.5V VCC =6V SYMBOL VIH SYMBOL VCC VIN VOUT TOPR
t V
MIN 2 0 0 -40
TYP
MAX 6 VCC VCC 125 1000 500 400
UNIT V V V C ns ns ns
ELECTRICAL CHARACTERISTICS
PARAMETER HIGH-level input voltage TEST CONDITIONS VCC=2V VCC=3V VCC=4.5V VCC=6V VCC=2V VCC=3V VCC=4.5V VCC=6V VCC=2V, IOH=-20A VCC=4.5V, IOH=-20A VCC=6V, IOH=-20A VCC=3V, IOH=-2.4mA VCC=4.5V, IOH=-6mA VCC=6V, IOH=-7.8mA VCC=2V, IOL=20A VCC=4.5V, IOL=20A VCC=6V, IOL=20A VCC=3V, IOL=2.4mA VCC=4.5V, IOL=6mA VCC=6V, IOL=7.8mA VCC=2V, IOH=-20A VCC=4.5V, IOH=-20A VCC=6V, IOH=-20A VCC=3V, IOH=-2.4mA VCC=4.5V, IOH=-4mA VCC=6V, IOH=-5.2mA 1.9 4.4 5.9 2.48 3.98 5.48 MIN TYP MAX UNIT 1.5 V 2.1 V 3.15 V 4.2 V 0.5 V 0.9 V 1.35 V 1.8 V 1.9 V 4.4 V 5.9 V 2.48 V 3.98 V 5.48 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 4 of 6
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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
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
U74HC595A
ELECTRICAL CHARACTERISTICS(Cont.)
PARAMETER SYMBOL TEST CONDITIONS VCC=2V, IOL=20A VCC=4.5V, IOL=20A VCC=6V, IOL=20A 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 MIN
CMOS IC
Low-Level Output Voltage, SQH
VOL
Input Leakage Current Output OFF -state current Quiescent Supply Current Input Capacitance
II(LEAK) IOZ IQ CIN
TYP MAX UNIT 0.1 V 0.1 V 0.1 V 0.26 V 0.26 V 0.26 V 0.1 A 0.5 A 4 A 10 pF
DYNAMIC CHARACTERISTICS
PARAMETER Maximum clock pulse frequency SYMBOL fmax 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 6 15 30 35 140 100 28 24 135 90 27 23 150 100 30 26 75 27 15 13 145 100 29 25 140 100 28 24 60 23 12 10 UNIT MHz 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 ns
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
OPERATING CHARACTERISTICS
PARAMETER Power Dissipation Capacitance SYMBOL Cpd TEST CONDITIONS No load MIN TYP MAX UNIT 300 pF
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www.unisonic.com.tw
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TEST CIRCUIT AND WAVEFORMS
VCC K1 From Output RL
CMOS IC
CL (Note 2)
K2
Note 2: CL includes probe and jig capacitance. CL=50pF, RL=1K
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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www.unisonic.com.tw
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