8-bit universal shift register; 3-state

The 74HC299-Q100 is an 8-bit universal shift register with 3-state outputs. It contains eight edge-triggered D-type flip-flops and the interstage logic necessary to perform synchronous shift-right, shift-left, parallel load and hold operations. The type of operation is determined by the mode select inputs S0 and S1. Pins I/O0 to I/O7 are flip-flop 3-state buffer outputs which allow them to operate as data inputs in parallel load mode. The serial outputs Q0 and Q7 are used for expansion in serial shifting of longer words. A LOW signal on the asynchronous master reset input MR overrides the Sn and clock CP inputs and resets the flip-flops. All other state changes are initiated by the rising edge of the clock pulse. Inputs can change when the clock is either state, provided that the recommended set-up and hold times are observed. A HIGH signal on the 3-state output enable inputs OE1 or OE2 disables the 3-state buffers and the I/On outputs assume a high-impedance OFF-state. In this condition, the shift, hold, load and reset operations can still occur. The 3-state buffers are also disabled by HIGH signals on both S0 and S1, when in preparation for a parallel load operation. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.

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

  • CMOS input levels

  • Multiplexed inputs/outputs provide improved bit density

  • Four operating modes:

    • Shift left

    • Shift right

    • Hold (store)

    • Load data

  • Operates with output enable or at high-impedance OFF-state

  • 3-state outputs drive bus lines directly

  • Cascadable for n-bit word lengths

  • ESD protection:

    • HBM JESD22-A114F exceeds 2 kV

    • MM JESD22-A115-A exceeds 200 V (C = 200 pF, R = 0 Ω)


Type number Product status VCC (V) Logic switching levels Output drive capability (mA) tpd (ns) fmax (MHz) Power dissipation considerations Tamb (°C) Rth(j-a) (K/W) Ψth(j-top) (K/W) Rth(j-c) (K/W) Package name
74HC299D-Q100 Production 2.0 - 6.0 CMOS ± 7.8 19 54 low -40~125 63 6.0 38 SO20


Type number Orderable part number, (Ordering code (12NC)) Status Marking Package Package information Reflow-/Wave soldering Packing
74HC299D-Q100 74HC299D-Q100J
Active 74HC299D SOT163-1

Environmental information

Type number Orderable part number Chemical content RoHS RHF-indicator
74HC299D-Q100 74HC299D-Q100J 74HC299D-Q100 rohs rhf rhf
Quality and reliability disclaimer

Documentation (9)

File name Title Type Date
74HC299_Q100 8-bit universal shift register; 3-state Data sheet 2020-03-02
AN11044 Pin FMEA 74HC/74HCT family Application note 2019-01-09
SOT163-1 3D model for products with SOT163-1 package Design support 2020-01-22
Nexperia_package_poster Nexperia package poster Leaflet 2020-05-15
SOT163-1 plastic, small outline package; 20 leads; 1.27 mm pitch; 12.8 mm x 7.5 mm x 2.65 mm body Package information 2022-06-20
SOT163-1_118 SO20; Reel pack for SMD, 13"; Q1/T1 product orientation Packing information 2022-08-01
74HC299D-Q100_Nexperia_Product_Reliability 74HC299D-Q100 Nexperia Product Reliability Quality document 2023-05-29
HCT_USER_GUIDE HC/T User Guide User manual 1997-10-31
WAVE_BG-BD-1 Wave soldering profile Wave soldering 2021-09-08


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File name Title Type Date
SOT163-1 3D model for products with SOT163-1 package Design support 2020-01-22

Ordering, pricing & availability

Type number Orderable part number Ordering code (12NC) Status Packing Packing Quantity Buy online
74HC299D-Q100 74HC299D-Q100J 935690963118 Active SOT163-1_118 2,000 Order product


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How does it work?

The interactive datasheets are based on the Nexperia MOSFET precision electrothermal models. With our interactive datasheets you can simply specify your own conditions interactively. Start by changing the values of the conditions. You can do this by using the sliders in the condition fields. By dragging the sliders you will see how the MOSFET will perform at the new conditions set.

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
74HC299D-Q100 74HC299D-Q100J 935690963118 SOT163-1 Order product