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74HC299-Q100

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)

Parametrics

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
74HC299D-Q100Production2.0 - 6.0CMOS± 7.81954low-40~125636.038SO20

Package

Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
74HC299D-Q100
SO20
(SOT163-1)
SOT163-1WAVE_BG-BD-1
SOT163-1_118Active74HC299D74HC299D-Q100J
( 9356 909 63118 )

Environmental information

Type numberOrderable part numberChemical contentRoHSRHF-indicatorLeadfree conversion date
74HC299D-Q10074HC299D-Q100J74HC299D-Q100
Quality and reliability disclaimer

Documentation (6)

File nameTitleTypeDate
74HC299_Q1008-bit universal shift register; 3-stateData sheet2020-03-02
AN11044Pin FMEA 74HC/74HCT familyApplication note2019-01-09
Nexperia_Selection_guide_2023Nexperia Selection Guide 2023Selection guide2023-05-10
HCT_USER_GUIDEHC/T User GuideUser manual1997-10-31
SOT163-1plastic, small outline package; 20 leads; 1.27 mm pitch; 12.8 mm x 7.5 mm x 2.65 mm bodyPackage information2022-06-20
WAVE_BG-BD-1Wave soldering profileWave soldering2021-09-08

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