18-bit buffer/driver (3-State)

The 74ALVCH16825 is an 18-bit non-inverting buffer/driver with 3-State outputs for bus-oriented applications.

The 74ALVCH16825 consists of two 9-bit sections with separate output enable signals. For either 9-bit buffer section, the two output enable (1OE1 and 1OE2 or 2OE1 and 2OE2) inputs must both be LOW for corresponding D outputs to be active. If either output enable input is HIGH, the outputs of that 9-buffer section are in the high impedance state.

The 74ALVCH16825 has active bus hold circuitry which is provided to hold unused or floating data inputs at a valid logic level. This feature eliminates the need for external pull-up or pull-down resistors.


  • Wide supply Voltage range of 1.2V to 3.6V
  • Complies with JEDEC standard no. 8-1A.
  • CMOS low power consumption
  • Direct interface with TTL levels
  • Current drive ± 24 mA at 3.0 V
  • MULTIBYTE TM flow-through standard pin-out architecture
  • Low inductance multiple Vcc and GND pins for minimum noise and ground bounce
  • All data inputs have bus hold
  • Output drive capability 50W transmission lines @ 85 °C


Type numberProduct statusVCC (V)Logic switching levelsOutput drive capability (mA)fmax (MHz)No of bitsPower dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Package name
74ALVCH16825DGGProduction2.3 - 3.6LVTTL± 2415018low-40~859321.0TSSOP56


Type numberPackageOutline versionReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
Tube in DrypackActiveALVCH1682574ALVCH16825DGGS
( 9352 590 50512 )
Reel 13" Q1/T1 in DrypackActiveALVCH1682574ALVCH16825DGGY
( 9352 590 50518 )

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
74ALVCH16825DGG74ALVCH16825DGGS74ALVCH16825DGGAlways Pb-free123.83.872.58E822
74ALVCH16825DGG74ALVCH16825DGGY74ALVCH16825DGGAlways Pb-free123.83.872.58E822
Quality and reliability disclaimer

Documentation (5)

File nameTitleTypeDate
74ALVCH1682518-bit buffer/driver; 3-stateData sheet2018-04-06
alvch16825alvch16825 IBIS modelIBIS model2013-04-07
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


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
alvch16825alvch16825 IBIS modelIBIS model2013-04-07

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