74AHC594-Q100; 74AHCT594-Q100

8-bit shift register with output register

The 74AHC594-Q100; 74AHCT594-Q100 is a high-speed Si-gate CMOS device and is pin compatible with Low-Power Schottky TTL (LSTTL). It is specified in compliance with JEDEC standard No. 7-A.

The 74AHC594-Q100; 74AHCT594-Q100 is an 8-bit, non-inverting, serial-in, parallel-out shift register that feeds an 8-bit D-type storage register. Separate clocks (SHCP and STCP) and direct overriding clears (SHR and STR) are provided on both the shift and storage registers. A serial output (Q7S) is provided for cascading purposes.

Both the shift and storage register clocks are positive-edge triggered. If the user wishes to connect both clocks together, the shift register will always be one count pulse ahead of the storage register.

This product has been qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1) and is suitable for use in automotive applications.

Features and benefits

  • Automotive product qualification in accordance with AEC-Q100 (Grade 1)
    • Specified from -40 °C to +85 °C and from -40 °C to +125 °C
  • Wide supply voltage range from 2.0 V to 5.5 V
  • Balanced propagation delays
  • All inputs have Schmitt-trigger action
  • Overvoltage tolerant inputs to 5.5 V
  • High noise immunity
  • CMOS low power dissipation
  • 8-bit serial-in, parallel-out shift register with storage
  • Independent direct overriding clears on shift and storage registers
  • Independent clocks for shift and storage registers
  • Latch-up performance exceeds 100 mA per JESD 78 Class II Level A
  • Input levels:
    • For 74AHC594-Q100: CMOS level
    • For 74AHCT594-Q100: TTL level
  • ESD protection:
    • MIL-STD-883, method 3015 exceeds 2000 V
    • HBM JESD22-A114F exceeds 2000 V
    • MM JESD22-A115-A exceeds 200 V (C = 200 pf, R = 0 Ω)
  • Multiple package options
  • DHVQFN package with Side-Wettable Flanks enabling Automatic Optical Inspection (AOI) of solder joints


  • Serial-to parallel data conversion
  • Remote control holding register


Type numberProduct statusVCC (V)Logic switching levelsOutput drive capability (mA)tpd (ns)fmax (MHz)Power dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
74AHC594BQ-Q100Production2.0 - 5.5CMOS± 84.1160low-40~1259112.360DHVQFN16
74AHC594D-Q100Production2.0 - 5.5CMOS± 84.1160low-40~125908.649SO16
74AHC594PW-Q100Production2.0 - 5.5CMOS± 84.1160low-40~1251234.152.2TSSOP16
74AHCT594BQ-Q100Production4.5 - 5.5TTL± 83.8160low-40~1259112.360DHVQFN16
74AHCT594D-Q100Production4.5 - 5.5TTL± 83.8160low-40~125908.649SO16
74AHCT594PW-Q100Production4.5 - 5.5TTL± 83.8160low-40~1251234.152.2TSSOP16


Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
SOT763-1Reel 7” Q1/T1 or Q2/T3ActiveAHC59474AHC594BQ-Q100,11
( 9352 986 52115 )
Reel 13" Q1/T1Active74AHC594D74AHC594D-Q100,118
( 9352 986 53118 )
Reel 13" Q1/T1ActiveAHC59474AHC594PW-Q100,11
( 9352 986 54118 )
SOT763-1Reel 7” Q1/T1 or Q2/T3ActiveACT59474AHCT594BQ-Q100,1
( 9352 986 55115 )
Reel 13" Q1/T1Active74AHCT594D74AHCT594D-Q100,11
( 9352 986 56118 )
Reel 13" Q1/T1ActiveAHCT59474AHCT594PW-Q100,1
( 9352 986 57118 )

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
74AHC594BQ-Q10074AHC594BQ-Q100,1174AHC594BQ-Q100Always Pb-free29.90.91.11E911
74AHC594D-Q10074AHC594D-Q100,11874AHC594D-Q100Always Pb-free29.90.91.11E911
74AHC594PW-Q10074AHC594PW-Q100,1174AHC594PW-Q100Always Pb-free29.90.91.11E911
74AHCT594BQ-Q10074AHCT594BQ-Q100,174AHCT594BQ-Q100Always Pb-free29.90.91.11E911
74AHCT594D-Q10074AHCT594D-Q100,1174AHCT594D-Q100Always Pb-free29.90.91.11E911
74AHCT594PW-Q10074AHCT594PW-Q100,174AHCT594PW-Q100Always Pb-free29.90.91.11E911
Quality and reliability disclaimer

Documentation (10)

File nameTitleTypeDate
74AHC_AHCT594_Q1008-bit shift register with output registerData sheet2021-07-07
ahct594ahct594 IBIS modelIBIS model2013-04-07
ahc594ahc594 IBIS modelIBIS model2013-04-07
SOT763-1plastic, leadless dual in-line compatible thermal enhanced very thin quad flat package; 16 terminals; 0.5 mm pitch; 3.5 mm x 2.5 mm x 1 mm bodyPackage information2020-04-21
SO-SOJ-WAVEFootprint for wave solderingWave soldering2009-10-08
SO-SOJ-REFLOWFootprint for reflow solderingReflow soldering2009-10-08
SOT109-1plastic, small outline package; 16 leads; 1.27 mm pitch; 9.9 mm x 3.9 mm x 1.75 mm bodyPackage information2021-01-06
WAVE_BG-BD-1Wave soldering profileWave soldering2021-09-08
SOT403-1plastic, thin shrink small outline package; 16 leads; 5 mm x 4.4 mm x 1.1 mm bodyPackage information2020-04-21
SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08


If you are in need of design/technical support, let us know and fill in the answer form, we'll get back to you shortly.


File nameTitleTypeDate
ahct594ahct594 IBIS modelIBIS model2013-04-07
ahc594ahc594 IBIS modelIBIS model2013-04-07


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