74AHCT595 8-BIT SHIFT REGISTER 8-BIT OUTPUT REGISTER Description Pin Assignments The 74AHCT595 is an advanced high speed CMOS device that is designed to be pin compatable with 74LS low power Schottky types. An eight bit shift register accepts data from the serial input (DS) on each positive transition of the shift register clock (STCP). When asserted low, the reset function (MR) sets all shift register values to zero and is independent of all clocks. Data from the input serial shift register is placed in the output register with a rising pulse on the storages resister clock (SHCP). With the output enable (OE asserted low the 3-state outputs Q0-Q7 become active and present. All registers capture data on rising edge and change output on the falling edge. If both clocks are connected together, the input shift register is always one clock cycle ahead of the output register. Features Applications Supply Voltage Range from 4.5V to 5.5V Sinks or sources 8mA at VCC = 4.5V General Purpose Logic Serial to Parallel Data conversion CMOS low power consumption Capture and hold data for extended periods of time. Schmitt Trigger Action at All Inputs Inputs accept up to 5.5V Allow simple serial bit streams from a microcontroller to control as many peripheral lines as needed. ESD Protection Tested per JESD 22 Wide array of products such as: Exceeds 200-V Machine Model (A115-A) Computer peripherals Exceeds 2000-V Human Body Model (A114-A) Appliances Exceeds 1000-V Charged Device Model (C101C) Industrial control Latch-Up Exceeds 250mA per JESD 78, Class II Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3) Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds. Click here for ordering information, located at the end of datasheet 74AHCT595 Document number: DS35487 Rev. 3 - 2 1 of 10 www.diodes.com June 2013 © Diodes Incorporated 74AHCT595 Pin Descriptions Pin Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Pin Name Q1 Q2 Q3 Q4 Q5 Q6 Q7 GND Q7S MR SHCP STCP OE DS Q0 Vcc Functional Diagram Description Parallel Data Output 1 Parallel Data Output 2 Parallel Data Output 3 Parallel Data Output 4 Parallel Data Output 5 Parallel Data Output 6 Parallel Data Output 7 Ground Serial Data Output Master Reset Input Shift Register Clock Input Storage Register Clock Input Output Enable Input Serial Data Input Parallel Data Output 0 Supply Voltage Logic Diagram 74AHCT595 Document number: DS35487 Rev. 3 - 2 2 of 10 www.diodes.com June 2013 © Diodes Incorporated 74AHCT595 Functional Description and Timing Diagram Control Input Output Function SHCP STCP OE MR DS Q7S Qn X X L L L NC X L L L L X X Low-level asserted on MR clears shift register. Storage register is unchanged Empty shift register transferred to storage register H L L Z Shift register remains clear;: All Q ouputs in Z state. X L H Q6S NC X L H NC QnS L H Q6S QnS HIGH is shifted into first stage of Shift Register Contents of each register shifted to next register The content of Q6S has been shifted to Q7S and now appears on device pin Q7S Contents of shift register copied to storage register. With output now in active state the storage resister contents appear on Q outputs. Contents of shift register copied to output register then shift register shifted. H=HIGH voltage state L=LOW voltage state =LOW to HIGH transition X= don’t care – high or low (not floating) NC= No change Z= high-impedance state 74AHCT595 Document number: DS35487 Rev. 3 - 2 3 of 10 www.diodes.com June 2013 © Diodes Incorporated 74AHCT595 Absolute Maximum Ratings (Note 4) (@TA = +25°C, unless otherwise specified.) Symbol ESD HBM ESD CDM ESD MM Rating 2 1 200 Unit kV kV V V Supply Voltage Range -0.5 to +7.0 VI Input Voltage Range -0.5 to +7.0 V Vo Voltage applied to output in high or low state -0.5 to VCC +0.5 V IIK Input Clamp Current VI < -0.5V -20 mA Output Clamp Current VO <-0.5V -20 mA IOK Output Clamp Current VO > VCC +0.5V IO Continuous output current ICC IGND VCC IOK 20 mA ±25 mA Continuous current through Vcc or GND 75 mA Continuous current through Vcc or GND -75 mA °C Operating Junction Temperature -40 to +150 TSTG Storage Temperature -65 to +150 °C PTOT Total Power Dissipation 500 mW TJ Notes: Description Human Body Model ESD Protection Charged Device Model ESD Protection Machine Model ESD Protection 4. Stresses beyond the absolute maximum may result in immediate failure or reduced reliability. These are stress values and device operation should be within recommend values. Recommended Operating Conditions (Note 5) (@TA = +25°C, unless otherwise specified.) Symbol VCC VI Parameter Conditions Min Max Unit Supply Voltage 4.5 5.5 V Input Voltage 0 5.5 V Output Voltage Active Mode 0 VCC V Δt/ΔV Input transition rise or fall rate VCC = 4.5V to 5.5V 20 ns/V TA Operating free-air temperature -40 +125 °C VO Note: 5. Unused inputs should be held at VCC or Ground. Electrical Characteristics (@TA = +25°C, unless otherwise specified.) Symbol Parameter Test Conditions VIL High-Level Input Voltage Low-Level Input voltage VOH High-Level Output Voltage IOH = -50μA VOL Low-Level Output Voltage IOL = 50μA VIH II Input Current VCC TA = +25°C Min Typ Max TA = -40°C to +85°C Min Max TA = -40° C to +125°C Min Max Unit 4.5V to 5.5V 2.0 2.0 2.0 V 4.5V to 5.5V 0.8 0.8 0.8 V IOH = -8mA IOL = 8mA VI =GND to 5.5V 4.4 4.5 4.4 4.4 3.94 3.80 3.70 0 0.1 0.1 0.1 0.36 0.44 0.55 0 to 5.5V 0.1 ±1 ±1 ±2 μA 4.5V 4.5V V V IOZ Z-state Leakage VO = Vcc or GND Current OE = HIGH 5.5V ± 0.25 2.5 10 μA ICC Supply Current VI = GND or VCC IO = 0 5.5V 4.0 40 80 μA 4.5V to 5.5V 1.35 1.5 1.5 mA 5.5V 4 10 10 10 pF ∆ICC Ci Additional Supply Current per Input Input Capacitance VI = Vcc -2.1V IO = 0 Vi = VCC or GND 74AHCT595 Document number: DS35487 Rev. 3 - 2 4 of 10 www.diodes.com June 2013 © Diodes Incorporated 74AHCT595 Switching Characteristics Symbol / Parameter fMAX Maximum Frequency Test Conditions VCC SHCP or STCP Figure 1 4.5V to 5.5V 130 170 Figure 1 4.5V to 5.5V 5.0 Figure 1 4.5V to 5.5V 5.0 SHCP HIGH or LOW STCP HIGH or LOW tW Pulse Width TA = +25°C Typ Max Pins Min -40°C to +85°C -40°C to +125°C Min Max Min Max 110 90 5.0 5.0 5.0 5.0 Unit MHz ns MR LOW Figure 1 4.5V to 5.5V 5.0 5.0 5.0 DS to SHCP Figure 1 4.5V to 5.5V 3.0 3.0 3.0 ns SHCP to STCP Figure 1 4.5V to 5.5V 5.0 5.0 5.0 ns DS to SHCP Figure 1 4.5V to 5.5V 2.0 2.0 2.0 ns tREC Recovery Time MR to SHCP Figure 1 4.5V to 5.5V 3.0 3.0 3.0 ns 4.5V to 5.5V 3.8 8.2 1.0 9 1.0 10 4.5V to 5.5V 5.2 10 1.0 11 1.0 12 4.5V to 5.5V 4 7.4 1.0 8.5 1.0 9.5 4.5V to 5.5V 5.3 9 1.0 10.5 1.0 11.5 4.5V to 5.5V 4.6 8.2 1.0 9.5 1.0 10.5 4.5V to 5.5V 5.8 10.5 1.0 11.5 1.0 12.5 4.5V to 5.5V 4.8 9 1.0 11 1.0 12 4.5V to 5.5V 6.2 11.6 1.0 13 1.0 14.5 4.5V to 5.5V 3.6 6.9 1.0 8 1.0 9 4.5V to 5.5V 5.8 10.3 1.0 11 1.0 12 tSU Set-up Time tH Hold Time SHCP to Q7S tPD Propagation Delay STCP to Qn MR to Q7S tEN Enable Time OE to Qn tDIS Disable Time OE to Qn Figure 1 CL = 15pF Figure 1 CL = 50pF Figure 1 CL = 15pF Figure 1 CL = 50pF Figure 1 CL = 15pF Figure 1 CL = 50pF Figure 1 CL = 15pF Figure 1 CL = 50pF Figure 1 CL = 15pF Figure 1 CL = 50pF ns ns ns ns ns Operating Characteristics (@TA = +25°C, unless otherwise specified.) Parameter Cpd Power dissipation capacitance 74AHCT595 Document number: DS35487 Rev. 3 - 2 Test Conditions VCC = 5V f = 1 MHz all outputs switching-no load 42 5 of 10 www.diodes.com Typ Unit pF June 2013 © Diodes Incorporated 74AHCT595 Parameter Measurement Information VCC 4.5V to 5.5V TEST Vload tPLH/tPHL Open tPLZ/tPZL VCC tPHZ/tPZH GND Inputs VI 3.0V VM tr/tf 3ns Input Output 1.5V VCC/2 CL 15pF, 50pF Voltage Waveform Pulse Duration and Recovery Time Voltage Waveform Set-up and Hold Times Voltage Waveform Propagation Delay Times Inverting and Non Inverting Outputs Voltage Waveform Enable and Disable Times Notes: A. Includes test lead and test apparatus capacitance. B. Output Waveform 1 depends on the internal QN node being low and behaves in this manner based on OE pin. Output Waveform 2 depends on the internal QN node being high and behaves in this manner based on OE pin. C. All pulses are supplied at pulse repetition rate ≤ 10 MHz. D. Inputs are measured separately one transition per measurement. E. tPLH and tPHL are the same as tPD. Figure 1 Load Circuit and Voltage Waveforms 74AHCT595 Document number: DS35487 Rev. 3 - 2 6 of 10 www.diodes.com June 2013 © Diodes Incorporated 74AHCT595 Ordering Information Part Number Package Code Packaging 74AHCT595S16-13 74AHCT595T16-13 S16 T16 SO-16 TSSOP-16 Note: 7” Tape and Reel (Note 6) Quantity Part Number Suffix 2500/Tape & Reel -13 2500/Tape & Reel -13 6. The taping orientation is located on our website at http://www.diodes.com/datasheets/ap02007.pdf Marking Information (1) SO-16, TSSOP16 Part Number 74AHCT595S16 74AHCT595T16 74AHCT595 Document number: DS35487 Rev. 3 - 2 7 of 10 www.diodes.com Package SO-16 TSSOP-16 June 2013 © Diodes Incorporated 74AHCT595 Package Outline Dimensions (All dimensions in mm.) Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for latest version. Package Type: SO-16 H E Gauge Plane L Detail ‘A’ D A A2 e B A1 C SO-16 Dim Min Max A 1.40 1.75 A1 0.10 0.25 A2 1.30 1.50 B 0.33 0.51 C 0.19 0.25 D 9.80 10.00 E 3.80 4.00 e 1.27 Typ H 5.80 6.20 L 0.38 1.27 Θ 0 8 All Dimensions in mm Detail ‘A’ Package Type: TSSOP-16 E/2 SEE DETAIL 'A' E1 E Y X PIN 1 x) b e Ø0.760Depth0.050±0.02 A2 R1 D R L2 C GAUGE PLANE A L SEATING PLANE A1 L1 DETAIL 'A' 74AHCT595 Document number: DS35487 Rev. 3 - 2 8 of 10 www.diodes.com TSSOP-16 Dim Min Max Typ A 1.08 A1 0.05 0.15 A2 0.80 0.93 b 0.19 0.30 c 0.09 0.20 D 4.90 5.10 E 6.40 BSC E1 4.30 4.50 e 0.65 BSC L 0.45 0.75 L1 1.00 REF L2 0.25 BSC R 0.09 R1 0.09 X 1.350 Y 1.050 Θ 0° 8° Θ1 5° 15° Θ2 0° All Dimensions in mm June 2013 © Diodes Incorporated 74AHCT595 Suggested Pad Layout Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version. Package Type: SO-16 X1 Y1 Y Dimensions C X X1 Y Y1 Value (in mm) 1.270 0.670 9.560 1.450 6.400 Pin 1 C X Package Type: TSSOP-16 X1 Dimensions C X X1 Y Y1 Y1 Y (16x) Value (in mm) 0.650 0.350 4.900 1.400 6.800 1 X (16x) 74AHCT595 Document number: DS35487 Rev. 3 - 2 C 9 of 10 www.diodes.com June 2013 © Diodes Incorporated 74AHCT595 IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. 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