UNISONIC TECHNOLOGIES CO., LTD U74HCT595 CMOS IC 8-BIT SHIFT REGISTERS WITH LATCHED 3-STATE OUTPUT REGISTERS DESCRIPTION The UTC 74HCT595 contains an 8-bit register with asynchronous reset input and an 8-bit latch with output enable input. Data on the Serial Data Input (SER) will be 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:4.5V~5.5V * High Noise Immunity * Output Compatibility with CMOS and TTL * 8-Bit Serial-In,Parallel-Out Shift * Inputs are TTL voltage compatiable ORDERING INFORMATION Ordering Number Lead Free Halogen Free U74HCT595L-P16-R U74HCT595G-P16-R U74HCT595L-P16-T U74HCT595G-P16-T www.unisonic.com.tw Copyright © 2011 Unisonic Technologies Co., Ltd Package Packing TSSOP-16 TSSOP-16 Tape Reel Tube 1 of 6 QW-R502-666.A U74HCT595 PIN CONFIGURATION QB 1 16 VCC QC 2 15 QA QD 3 14 SER QE 4 13 OE QF 5 12 RCLK QG 6 11 QH 7 10 SRCLR 8 CMOS IC 9 GND SRCLK QH’ FUNCTION TABLE FUNCTION INPUTS SRCLK RCLK OE SRCLR SER QH’ Qn X X L L X L NC X ↑ L L X L L X X H L X L Z ↑ X L H H QG’ NC X ↑ L H X NC Qn’ ↑ ↑ L H X QG’ Qn’ A Low-Level on SRCLR only affects the shift registers. Empty shift register loaded into storage register. Shift register clear. Parallel outputs in high-impedance OFF-state Logic high level shifted into the first shift register. Contents of all shift register stages shifted through, e.g. previous state of stage G(internal QG’) appears on the serial output(QH’). Contents of shift register stages (internal Qn’) are transferred to the storage register and parallel output stages. Contents of shift register shifted through. Previous contents of the shift register is transferred to the storage register and the parallel output stages. Note:H : HIGH voltage level. L : LOW voltage level. X : Don’t care. Z : High impedance OFF-state. NC: No change. ↑ : Low-to-High transition. ↓ : High-to-Low transition. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw OUTPUTS 2 of 6 QW-R502-666.A U74HCT595 CMOS IC LOGIC DIAGRAM SRCLR SRCLK SER R D R D R D R D R D R D R D R D SRA SRB SRC SRD SRE SRF SRG SRH Q Q Q Q Q Q Q Q D D D D D D D D LRA LRB LRC LRD LRE LRF LRG LRH Q Q Q Q Q Q Q Q QA QB QC QD QE QF QG QH RCLK QH’ OE TIMING DIAGRAM SRCLR OE UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 6 QW-R502-666.A U74HCT595 CMOS IC ABSOLUTE MAXIMUM RATING(unless otherwise specified) PARAMETER Supply Voltage Input Voltage Output Voltage(active mode) SYMBOL RATINGS UNIT VCC -0.5~7.0 V VIN -0.5~Vcc+0.5 V VOUT -0.5~VCC+0.5 V Input Clamp Current (ViN<0) IIK ±20 mA Output Clamp Current (VOUT<0) IOK ±20 mA Output Current IOUT ±35 mA VCC or GND Current ICC ±70 mA 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 =4.5V SYMBOL VCC VIN VOUT TOPR tR/tF MIN 4.5 0 0 -40 TYP 5 MAX 5.5 VCC VCC 85 500 6.0 UNIT V V V °C ns ELECTRICAL CHARACTERISTICS(Ta=25°С, unless otherwise specified) PARAMETER High-Level input voltage Low-Lever output voltage SYMBOL TEST CONDITIONS VIH VCC=4.5V~5.5V VIL VCC=4.5V~5.5V VCC=4.5V, IOH=-20μA High-Level Output Voltage,QA-QH VOH VCC=4.5V, IOH=-6mA VCC=4.5V, IOL=20μA Low-Level Output Voltage,QA-QH VOL VCC=4.5V, IOH=6mA VCC=4.5V, IOH=-20μA High-Level Output Voltage,QH’ VOH VCC=4.5V, IOH=-4mA VCC=4.5V, IOL=20μA Low-Level Output Voltage,QH’ VOL VCC=4.5V, IOH=4mA Input Leakage Current II(LEAK) VCC=5.5V, VIN=VCC or GND Output OFF -state current IOZ VCC=5.5V, VOUT=VCC or GND Quiescent Supply Current ICC VCC=5.5V, VIN=VCC or GND, IOUT=0 One input at VCC -2.1V,other inputs △ICC Additional Quiescent Supply Current at 0 or VCC Input Capacitance CIN VCC=5.5V, VIN=VCC or GND UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MIN 2.0 4.4 3.98 4.4 3.98 TYP 1.6 1.2 4.499 4.3 0.001 0.17 4.499 4.3 0.001 0.17 ±0.1 ±0.01 MAX 0.1 0.26 ±100 ±0.5 8 UNIT V V V V V V V V V V nA μA μA 100 450 uA 3 10 pF 0.8 0.1 0.26 4 of 6 QW-R502-666.A U74HCT595 DYNAMIC CHARACTERISTICS(Ta=25°С, CL=50pF,RL=1kΩ,unless otherwise specified) PARAMETER Maximum clock pulse frequency Propagation delay from input (RCLK) to output(Qn) Propagation delay from input (SRCLK) to output(QH’) 3-state output enable time from input ( OE ) to output(Qn) 3-state output disable time from input ( OE ) to output(Qn) Propagation delay from input ( SRCLR ) to output(QH’) Output transition time, QH’ Output transition time, Qn CMOS IC SYMBOL f(MAX) TEST CONDITIONS VCC=4.5V MIN 30 TYP MAX UNIT 52 MHz tPHL/tPLH VCC=4.5V 24 40 ns tPLH/tPHL VCC=4.5V 24 42 ns tPZH/tPZL VCC=4.5V 21 35 ns tPHZ/tPLZ VCC=4.5V 18 30 ns tPHL VCC=4.5V 23 40 ns tTLH/ tTHL tTLH/ tTHL VCC=4.5V VCC=4.5V 8 8 15 12 ns ns OPERATING CHARACTERISTICS PARAMETER Power Dissipation Capacitance SYMBOL CPD TEST CONDITIONS No Load UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw RATINGS 400 UNIT pF 5 of 6 QW-R502-666.A U74HCT595 CMOS IC TEST CIRCUIT AND WAVEFORMS VCC K1 From Output CL RL K2 (Note) Note: CL includes probe and jig capacitance. 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 6 of 6 QW-R502-666.A