74AHCT594 8-BIT SHIFT REGISTER WITH 8-BIT OUTPUT REGISTER Description Pin Assignments The 74AHCT594 is an advanced high speed CMOS device that is ( Top View ) designed to be pin compatable with 74LS low power Schottky types. Q1 1 16 Vcc asserted low the shift register reset function (SHR) sets all shift Q2 2 15 Q0 register values to zero and is independent of all clocks. Also when Q3 3 14 DS register values to zero and is independent of all clocks. Q4 4 13 STR Data from the input serial shift register is placed in the output register Q5 5 12 STCP Q6 6 11 SHCP Q7 7 10 SHR 8 9 Q7S An eight bit shift register accepts data from the serial input (DS) on each positive transition of the shift register clock (SHCP). When asserted low, the storage register reset function (STR) sets all shift with a rising pulse on the storages resister clock (STCP). The storage resister includes output Q7S which is used for cascading information between devices. As the information moves into the storage register, it is asserted on the push-pull outputs Q0-Q7. GND All registers capture data on rising edge and change output on the SO-16 / TSSOP-16 falling edge. If both clocks are connected together, the input shift register is always one clock cycle ahead of the output register. Features Applications Wide 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 6.0V 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 74AHCT594 Document number: DS35485 Rev. 2 - 2 1 of 10 www.diodes.com June 2013 © Diodes Incorporated 74AHCT594 Pin Descriptions Functional Diagram Pin Number Pin Name 1 Q1 Parallel Data Output 1 Description 2 Q2 Parallel Data Output 2 3 Q3 Parallel Data Output 3 4 Q4 Parallel Data Output 4 5 Q5 Parallel Data Output 5 6 Q6 Parallel Data Output 6 7 Q7 Parallel Data Output 7 8 GND 9 Q7S Serial Data Output 10 SHR Shift Register Reset active low 11 SHCP 12 STCP 13 STR 14 DS Serial Data input 15 Q0 Parallel Data Output 0 16 Vcc Supply Voltage Ground Shift Register Clock Input Storage Register Clock Input Storage Register Reset active low Logic Diagram STAGE 0 DS D STAGES 1 TO 6 D Q STAGE 7 Q D Q FF0 FF7 CP CP R R SHCP SHR D Q D LATCH Q LATCH CP CP R R STCP STR Q0 74AHCT594 Document number: DS35485 Rev. 2 - 2 Q1 Q2 Q3 Q4 Q5 Q6 2 of 10 www.diodes.com Q7 June 2013 © Diodes Incorporated 74AHCT594 Functional Description and Timing Diagram Control SHR L X STR X L Input SHCP X X Output Function STCP X X DS X X Q7S L NC Qn NC L Clear Shift Register Clear Storage Register H X L H or L Q6S NC Loads DS into shift register stage 0. All QS shifted H H X X NC Qs H H H or L Q6S QnS Contents of shift register moved to starge register all QS -> QN Shift Register one pulse count ahead of storage register. H=HIGH voltage state L=LOW voltage state =LOW to HIGH transition X= don’t care – high or low (not floating) NC= No change 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 -0.3 to VCC +0.5 V IIK Input Clamp Current VI< -0.5V -20 mA IOK Output Clamp Current VO<-0.5V -20 mA IOK Output Clamp Current VO> VCC +0.5V 20 mA IO Continuous output current ±25 mA ICC Continuous current through Vcc 75 mA VCC Notes: Parameter Human Body Model ESD Protection Charged Device Model ESD Protection Machine Model ESD Protection IGND Continuous current through GND -75 mA TJ Operating Junction Temperature -40 to +150 °C TSTG Storage Temperature -65 to +150 °C PTOT Total Power Dissipation 500 mW 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. 74AHCT594 Document number: DS35485 Rev. 2 - 2 3 of 10 www.diodes.com June 2013 © Diodes Incorporated 74AHCT594 Recommended Operating Conditions (Note 5) (@TA = +25°C, unless otherwise specified.) Symbol Min Max Unit Supply Voltage 4.5 5.5 V VI Input Voltage 0 5.5 V VO VCC Parameter Conditions Output Voltage Active Mode 0 VCC V t/V Input transition Rise or Fall Rate VCC = 4.5V to 5.5V 20 ns/V TA Operating Free-Air Temperature -40 +125 °C Note: 5. Unused inputs should be held at VCC or Ground. Electrical Characteristics (@TA = +25°C, unless otherwise specified.) Symbol Parameter Test Conditions TA = +25°C Min Typ Max VCC TA = -40°C to +85°C TA = -40°C to +125°C Min Max Min Max Unit VIL High-level Input Voltage Low-level input voltage VOH High Level Output Voltage IOH = -50μA 4.5V 4.4 4.5 4.4 4.4 IOH = -8mA 4.5V 3.94 3.80 3.70 VOL Low-level Output Voltage IOL = 50μA 4.5V 0 0.1 0.1 0.1 IOL = 8mA 4.5V 0.36 0.44 0.55 Input Current VI = GND or 5.5V 0V to 5.5V 0.1 ±0.1 ±1 ±2 μA 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 3.5 10 10 10 pF VIH II ICC ∆ICC Ci Additional Supply Current per Input Input Capacitance VI = VCC -2.1V IO = 0 Vi = VCC or GND 74AHCT594 Document number: DS35485 Rev. 2 - 2 4.5V to 5.5V 2.0 2.0 2.0 V 4.5V to 5.5V 0.8 0.8 0.8 V 4 of 10 www.diodes.com V V June 2013 © Diodes Incorporated 74AHCT594 Switching Characteristics Symbol / Parameter Pins fMAX Maximum Frequency SHCP or STCP Test Conditions TA = +25°C Min Typ Max VCC tH Hold Time Max Unit 70 5.5 6.0 6.5 5.5 6.0 6.5 SHR and STR Figure 2 C = 50pF 4.5V to 5.0V L HIGH or LOW 5.2 5.5 6.0 Figure 2 CL = 50pF 4.5V to 5.0V 3.0 3.0 3.5 SHR to STCP Figure 2 CL = 50pF 4.5V to 5.0V SHCP to Figure 2 CL = 50pF 4.5V to 5.0V STCP 5.0 5.0 5.5 5.0 5.0 5.5 Figure 2 CL = 50pF 4.5V to 5.0V 5 2.0 2.0 2.5 ns SHR to SHCP and STR to Figure 2 CL = 50pF 4.5V to 5.0V STCP 10 2.9 3.3 3.8 ns STCP to Qn SHCP to Q7S STCP to Qn tPHl Propagation Delay Min 80 SHCP toQ7S tPLH Propagation Delay Max DS to SHCP tREC Recovery Time Min 160 DS to SHCP tSU Set-up Time -40°C to +125°C 90 Figure 2 CL = 15pF 4.5V to 5.0V SHCP Figure 2 CL = 50pF 4.5V to 5.0V HIGH or LOW STCP Figure 2 CL = 50pF 4.5V to 5.0V HIGH or LOW tW Pulse Width -40°C to +85°C SHR to Q7S STR to Qn Figure 2 CL = 15pF 4.5V to 5.0V 4.1 6.7 1.8 7.6 1.8 8.3 Figure 2 CL = 50pF 4.5V to 5.0V 5.4 8.8 2.4 10.1 2.4 11.0 Figure 2 CL = 15pF 4.5V to 5.0V 3.7 6.1 1.9 6.9 1.9 7.2 10.5 Figure 2 CL = 50pF 4.5V to 5.0V 5.2 8.5 2.6 9.7 2.6 Figure 2 CL = 15pF 4.5V to 5.0V 4.1 6.7 1.8 7.6 1.8 8.3 Figure 2 CL = 50pF 4.5V to 5.0V 5.4 8.8 2.4 10.1 2.4 11.0 Figure 2 CL = 15pF 4.5V to 5.0V 3.7 6.1 1.9 6.9 1.9 7.2 Figure 2 CL = 50pF 4.5V to 5.0V 5.2 8.5 2.6 9.7 2.6 10.5 Figure 2 CL = 15pF 4.5V to 5.0V 4.3 7.0 2.4 8.0 2.4 8.7 Figure 2 CL = 50pF 4.5V to 5.0V 5.4 8.8 2.7 10.1 2.7 11.0 Figure 2 CL = 15pF 4.5V to 5.0V 4.5 7.4 2.3 8.4 2.3 9.2 Figure 2 CL = 50pF 4.5V to 5.0V 5.7 9.4 3.1 10.7 3.1 11.7 MHz ns ns ns ns ns ns Operating Characteristics (@TA = +25°C, unless otherwise specified.) Parameter Cpd Power dissipation capacitance 74AHCT594 Document number: DS35485 Rev. 2 - 2 Test Conditions VCC = 5V Typ Unit f = 1 MHz all outputs switching-no load VI = GND TO VCC -1.5V 51 pF 5 of 10 www.diodes.com June 2013 © Diodes Incorporated 74AHCT594 Parameter Measurement Information VCC Inputs VI 4.5V VCC tr/tf 6ns 5.0V VCC 6ns Voltage Waveform Pulse Duration and Recovery Time VM VCC/2 VCC/2 Voltage Waveform Set-up and Hold Times Voltage Waveform Propagation Delay Times Inverting and Non Inverting Outputs Notes: A. Includes test lead and test apparatus capacitance. B. All pulses are supplied at pulse repetition rate ≤ 10 MHz. C. Inputs are measured separately one transition per measurement. D. tPLH and tPHL are the same as tPD. Figure 2 Load Circuit and Voltage Waveforms 74AHCT594 Document number: DS35485 Rev. 2 - 2 6 of 10 www.diodes.com June 2013 © Diodes Incorporated 74AHCT594 Ordering Information Device Package Code Packaging S16 T16 SO-16 TSSOP-16 74AHCT594S16-13 74AHCT594T16-13 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 74AHCT594S16 74AHCT594T16 74AHCT594 Document number: DS35485 Rev. 2 - 2 7 of 10 www.diodes.com Package SO-16 TSSOP-16 June 2013 © Diodes Incorporated 74AHCT594 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 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 DETAIL 'A' 74AHCT594 Document number: DS35485 Rev. 2 - 2 8 of 10 www.diodes.com June 2013 © Diodes Incorporated 74AHCT594 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) 74AHCT594 Document number: DS35485 Rev. 2 - 2 C 9 of 10 www.diodes.com June 2013 © Diodes Incorporated 74AHCT594 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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