74AHC594 8-BIT SHIFT REGISTER WITH 8-BIT OUTPUT REGISTER Description Pin Assignments The 74AHC594 is an advanced high speed CMOS device. 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 shift regisister reset function (SHR) sets all shift register values to zero and is independent of all clocks. Also when asserted low the storage register reset function (STR) 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 (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. 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 Wide Supply Voltage Range from 2.0V 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 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 74AHC594 Document number: DS35484 Rev. 3 - 2 1 of 11 www.diodes.com June 2013 © Diodes Incorporated 74AHC594 Pin Descriptions Functional Diagram Pin Number Pin Name 1 Q1 Parallel Data Output 1 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 8 GND Functions Parallel Data Output 7 Ground 9 Q7S Serial Data Output 10 SHR Shift Register Reset active low 11 SHCP 12 STCP 13 STR 14 DS Shift Register Clock Input Storage Register Clock Input Storage Register Reset active low Serial Data input 15 Q0 Parallel Data Output 0 16 Vcc Supply Voltage Logic Diagram STAGE 0 DS D STAGES 1 TO 6 Q D STAGE 7 Q D Q FF0 CP FF7 CP R R SHCP SHR D Q D LATCH CP Q LATCH CP R R STCP STR Q0 74AHC594 Document number: DS35484 Rev. 3 - 2 Q1 Q2 Q3 Q4 Q5 Q6 2 of 11 www.diodes.com Q7 June 2013 © Diodes Incorporated 74AHC594 Functional Description and Timing Diagram Control SHR L X STR X L Input SHCP X X Output STCP X X DS X X Q7S L NC Qn NC L Function 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 SHCP DS STCP SHR STR Q0 Q1 Q6 Q7 Q7S 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 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 75 mA Continuous current through 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: Parameter 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. 74AHC594 Document number: DS35484 Rev. 3 - 2 3 of 11 www.diodes.com June 2013 © Diodes Incorporated 74AHC594 Recommended Operating Conditions (Note 5) (@TA = +25°C, unless otherwise specified.) Symbol Parameter Conditions Supply Voltage VCC Min Max Unit 2.0 5.5 V VI Input Voltage 0 5.5 V VO Output Voltage 0 VCC V VCC = 3.0V to 3.6V 100 VCC = 4.5V to 5.5V 20 -40 +125 Δt/ΔV Input transition Rise or Fall Rate TA Operating Free-Air Temperature Note: ns/V °C 5. Unused inputs should be held at VCC or Ground. Electrical Characteristics (@TA = +25°C, unless otherwise specified.) Symbol VIH VIL VOH VOL VCC TA = +25°C Min Typ Max 2.0V 1.5 1.5 1.5 3.0V 2.1 2.1 2.1 5.5V 3.85 3.85 2.0V 0.5 3.85 0.5 0.5 3.0V 0.9 0.9 0.9 5.5V 1.65 1.65 1.65 IOH = -50μA 2.0V 1.9 2.0 1.9 1.9 IOH = -50μA 3.0V 2.9 3.0 2.9 2.9 IOH = -50μA 4.5V 4.4 4.5 4.4 4.4 IOH = -4mA 3.0V 2.58 2.48 2.40 Parameter High-Level Input Voltage Low-Level Input Voltage High-Level Output Voltage Low-Level Output Voltage Test Conditions TA = -40°C to +85°C Min Max TA = -40°C to +125°C Min Max IOH = -8mA 4.5V 3.94 3.80 3.70 IOL = 50μA 2.0V 0 0.1 0.1 0.1 IOL = 50μA 3.0V 0 0.1 0.1 0.1 IOL = 50μA 4.5V 0 0.1 0.1 0.1 IOL = 4mA 3.0V 0.36 0.44 0.55 Unit V V V V IOL = 8mA 4.5V 0.36 0.44 0.55 Input Current VI = GND or 5.5V 5.5V 0.01 ± 0.1 ±1 ±2 μA ICC Supply Current VI = GND or VCC IO = 0 5.5V 4 40 80 μA Ci Input Capacitance Vi = VCC or GND 5.5V 3.5 10 10 10 pF II 74AHC594 Document number: DS35484 Rev. 3 - 2 4 of 11 www.diodes.com June 2013 © Diodes Incorporated 74AHC594 Switching Characteristics Symbol / Parameter fMAX Maximum Frequency tW Pulse Width tSU Set-up Time tH Hold Time tREC Recovery Time Pins Test Conditions SHCP or STCP Figure1 SHCP and STCP HIGH or LOW Figure1 SHR and STR HIGH or LOW Figure1 DS to SHCP Figure1 SHR to STCP Figure1 SHCP tp STCP Figure1 DS to SHCP Figure1 SHR to SHCP Figure1 SHR to STCP Figure1 Figure1 CL = 15pF SHCP toQ7S tPLH LOW to HIGH Propagation Delay Figure1 CL = 50pF Figure1 CL = 15pF STCP to Qn Figure1 CL = 50pF 74AHC594 Document number: DS35484 Rev. 3 - 2 VCC Min TA = +25°C Typ Max -40°C to +85°C -40°C to +125°C Min Max Min Max 3.0V to 3.6V 80 125 70 65 4.5V to 5.5V 90 70 80 70 3.0V to 3.6V 6.0 6.5 7.0 4.5V to 5.5V 5.5 6.0 6.5 3.0V to 3.6V 5.0 5.0 5.5 4.5V to 5.5V 5.0 5.2 5.7 3.0V to 3.6V 3.5 3.5 3.5 4.5V to 5.5V 3.0 3.0 3.0 3.0V to 3.6V 8.0 9.0 9.5 4.5V to 5.5V 5.0 5.0 5.5 3.0V to 3.6V 8.0 8.5 9.0 4.5V to 5.5V 5.0 5.0 5.5 3.0V to 3.6V 1.5 1.5 1.5 4.5V to 5.5V 2.0 2.0 2.0 3.0V to 3.6V 4.2 4.8 5.3 4.5V to 5.5V 2.9 3.3 3.8 3.0V to 3.6V 4.6 5.3 5.8 4.5V to 5.5V 3.2 8.5 3.7 4.3 10.6 3.0V to 3.6V 5.2 2.2 9.7 4.5V to 5.5V 3.8 6.3 1.7 7.2 1.7 7.8 3.0V to 3.6V 7.4 11.5 3.0 13.2 3.0 14.3 4.5V to 5.5V 4.8 8.0 2.4 9.1 2.4 10.0 3.0V to 3.6V 5.1 8.3 2.3 9.5 2.3 10.6 4.5V to 5.5V 3.5 5.7 1.8 6.5 1.8 7.1 3.0V to 3.6V 7.3 11.9 3.3 13.6 3.3 14.7 4.5V to 5.5V 4.8 7.8 2.6 9.0 2.6 9.8 5 of 11 www.diodes.com 2.2 Unit MHz ns ns ns ns ns ns ns ns June 2013 © Diodes Incorporated 74AHC594 Switching Characteristics (cont.) Symbol / Parameter Pins Test Conditions Figure 1 CL = 15pF SHCP toQ7S Figure 1 CL = 50pF Figure 1 CL = 15pF STCP to Qn tPHLH HIGH to LOW Propagation Delay Figure 1 CL = 50pF SHR to Q7S STR to Qn Figure 1 CL = 15pF Figure 1 CL = 50pF Figure 1 CL = 15pF Figure 1 CL = 50pF SHR to Q7S Figure 1 tPHL Propagation Delay STR to Qn tTHL Transition Time Figure 1 Serial data output Q7S Figure 1 Parallel Data Outputs QN Figure 1 VCC Min TA = +25°C Typ Max -40°C°C to +85°C -40°C°C to +125°C Min Max Min Max 11.0 3.0V to 3.6V 5.5 8.9 2.3 10.2 2.3 4.5V to 5.5V 4.1 6.7 1.9 7.6 1.9 8.2 3.0V to 3.6V 7.4 12.1 3.0 13.9 3.0 15.1 4.5V to 5.5V 5.4 8.8 2.5 10.1 2.5 11.0 3.0V to 3.6V 5.5 9.1 2.4 10.4 2.4 11.3 4.5V to 5.5V 3.7 6.0 1.9 6.9 1.9 7.5 3.0V to 3.6V 7.3 12.0 3.2 13.8 3.2 15.0 4.5V to 5.5V 5.2 8.5 2.6 9.7 2.6 10.5 3.0V to 3.6V 5.7 9.5 2.3 10.8 2.3 11.7 4.5V to 5.5V 4.1 6.7 2.0 7.6 2.0 8.2 3.0V to 3.6V 7.5 12.2 3.6 14.0 3.6 15.2 4.5V to 5.5V 5.4 8.8 2.8 10.1 2.8 11.0 3.0V to 3.6V 4.1 7.2 2.2 8.2 2.2 8.9 4.5V to 5.5V 4.1 7.2 2.2 8.2 2.2 8.9 3.0V to 3.6V 5.4 9.4 3.0 10.7 3.0 11.6 4.5V to 5.5V 5.4 9.4 3.0 10.7 3.0 11.6 2.0V 39 150 185 225 4.5V 14 30 37 45 5.0V 11 12 31 6.0V 26 38 2.0V 39 125 155 185 4.5V 14 25 31 37 5.0V 11 6.0V 12 21 26 31 2.0V 19 75 95 110 4.5V 7 15 19 22 6.0V 6 13 16 19 2.0V 14 60 75 90 4.5V 5 12 15 18 6.0V 4 10 13 15 Unit ns ns ns ns ns ns ns ns Operating Characteristics (@TA = +25°C, unless otherwise specified.) Parameter Cpd Power dissipation capacitance 74AHC594 Document number: DS35484 Rev. 3 - 2 Test Conditions VCC = 5V f = 1 MHz all outputs switching-no load 51 6 of 11 www.diodes.com Typ Unit pF June 2013 © Diodes Incorporated 74AHC594 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 ≤ 10MHz. C. Inputs are measured separately one transition per measurement. D. tPLH and tPHL are the same as tPD. Figure 1 Load Circuit and Voltage Waveforms 74AHC594 Document number: DS35484 Rev. 3 - 2 7 of 11 www.diodes.com June 2013 © Diodes Incorporated 74AHC594 Ordering Information Note: Part Number Package Code Packaging 74AHC594S16-13 74AHC594T16-13 S16 T16 SO-16 TSSOP-16 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 74AHC594S16 74AHC594T16 74AHC594 Document number: DS35484 Rev. 3 - 2 8 of 11 www.diodes.com Package SO-16 TSSOP-16 June 2013 © Diodes Incorporated 74AHC594 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' 74AHC594 Document number: DS35484 Rev. 3 - 2 9 of 11 www.diodes.com June 2013 © Diodes Incorporated 74AHC594 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 Pin 1 Dimensions C X X1 Y Y1 Value (in mm) 1.270 0.670 9.560 1.450 6.400 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) 74AHC594 Document number: DS35484 Rev. 3 - 2 C 10 of 11 www.diodes.com June 2013 © Diodes Incorporated 74AHC594 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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