18-bit bus-interface D-type flip-flop with reset and enable; 3-state

The 74ALVCH16823 is a 18-bit edge-triggered flip-flop featuring separate D-type inputs for each flip-flop and 3-state outputs for bus oriented applications. Incorporates bushold data inputs which eliminate the need for external pull-up resistors to hold unused inputs. The 74ALVCH16823 consists of two sections of nine edge-triggered flip-flops. A clock (nCP) input, an output-enable (nOE) input, a master reset (nMR) input and a clock-enable (nCE) input are provided for each total 9-bit section.

With the clock-enable (nCE) input LOW, the D-type flip-flops will store the state of their individual nDn-inputs that meet the set-up and hold time requirements on the LOW-to-HIGH nCP transition. Taking nCE HIGH disables the clock buffer, thus latching the outputs. Taking the master reset (nMR) input LOW causes all the nQn outputs to go LOW independently of the clock.

When nOE is LOW, the contents of the flip-flops are available at the outputs. When the nOE is HIGH, the outputs go to the high impedance OFF-state. Operation of the nOE input does not affect the state of flip-flops.

Active bus hold circuitry is provided to hold unused or floating data inputs at a valid logic level.


  • Wide supply voltage range from 1.2 V to 3.6 V
  • CMOS low-power consumption
  • Direct interface with TTL levels
  • Current drive ± 24 mA at 3.0 V
  • MULTIBYTE flow-through standard pin-out architecture
  • Low inductance multiple VCC and GND pins for minimum noise and ground bounce
  • Output drive capability 50 Ω transmission lines at 85°C
  • All data inputs have bushold
  • Complies with JEDEC standard no. 8-1A
  • Complies with JEDEC standards:
    • JESD8-5 (2.3 V to 2.7 V)
    • JESD8B/JESD36 (2.7 V to 3.6 V)
  • ESD protection:
    • HBM ANSI/ESDA/JEDEC JS-001 exceeds 2000 V
    • CDM JESD22-C101E exceeds 1000 V


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)Package name
74ALVCH16823DGGProduction1.2 - 3.6TTL± 242.1350low-40~859321.0TSSOP56


Type numberPackageOutline versionReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
Tube in DrypackActiveALVCH1682374ALVCH16823DGGS
( 9352 590 30512 )
Reel 13" Q1/T1 in DrypackActiveALVCH1682374ALVCH16823DGGY
( 9352 590 30518 )

Discontinuation information

Type numberOrderable part number, (Ordering code (12NC))Last time buy dateLast time delivery dateReplacement productStatusComments

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
74ALVCH16823DGG74ALVCH16823DGGS74ALVCH16823DGGAlways Pb-free123.83.872.58E822
74ALVCH16823DGG74ALVCH16823DGGY74ALVCH16823DGGAlways Pb-free123.83.872.58E822
Quality and reliability disclaimer

Documentation (6)

File nameTitleTypeDate
74ALVCH1682318-bit bus-interface D-type flip-flop with reset and enable; 3-stateData sheet2018-02-02
alvch16823alvch16823 IBIS modelIBIS model2013-04-07
nexperia_selection_guide_2019_201901Selection guide 2019. Discretes, Logic and MOSFETsSelection guide2018-12-12
SOT364-1_118TSSOP56; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering code (12NC) ending 118Packing2013-04-15
SOT364-1plastic, thin shrink small outline package; 56 leads; 0.5 mm pitch; 14 mm x 6.1 mm x 1.2 mm bodyOutline drawing2018-10-18
SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08


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File nameTitleTypeDate
alvch16823alvch16823 IBIS modelIBIS model2013-04-07

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