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74ALVCH16843DGG ECAD models PCB Symbol, Footprint & ECAD Model

18-bit bus-interface D-type latch (3-State)

The 74ALVCH16843 has two 9-bit D-type latch featuring separate D-type inputs for each latch and 3-State outputs for bus oriented applications. The two sections of each register are controlled independently by the latch enable (nLE) clear (nCLR) preset (nPRE) and output enable (nOE) control gates.

When nOE is LOW, the data in the registers appear at the outputs. When nOE is HIGH, the outputs are in the high impedance OFF state. Operation of the nOE input does not affect the state of the flip-flops.

The 74ALVCH16843 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.

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
74ALVCH16843DGG 74ALVCH16843DGGS 935259110512 SOT364-1 Order product
74ALVCH16843DGG 74ALVCH16843DGGY 935259110518 SOT364-1 Order product
74ALVCH16843DGG 74ALVCH16843DGG:11 935259110112 SOT364-1 Order product
74ALVCH16843DGG 74ALVCH16843DGG,11 935259110118 SOT364-1 Order product


  • Wide supply voltage range of 1.2 V to 3.6 V
  • 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™™ 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 50 Ω transmission lines @ 85 °C

Target applications


Type numberProduct statusVCC (V)Logic switching levelsOutput drive capability (mA)tpd (ns)No of bitsPower dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Package name
74ALVCH16843DGGProduction2.3 - 3.6LVTTL± 242.118low-40~859321.0TSSOP56


Type numberOrderable part number, (Ordering code (12NC))StatusMarkingPackageOutline versionReflow-/Wave solderingPacking
( 9352 591 10512 )
Tube in Drypack
( 9352 591 10518 )
ActiveALVCH16843Reel 13" Q1/T1 in Drypack

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFEFRIFRMTBF (hour)MSLMSL leadfree
Quality and reliability disclaimer

Documentation (5)

File nameTitleTypeDate
74ALVCH1684318-bit bus-interface D-type latch; 3-stateData sheet2017-11-21
alvch16843alvch16843 IBIS modelIBIS model2013-04-07
SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08
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


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File nameTitleTypeDate
alvch16843alvch16843 IBIS modelIBIS model2013-04-07

Ordering, pricing & availability

Type numberOrderable part numberOrdering code (12NC)PackingBuy online
74ALVCH16843DGG74ALVCH16843DGGS935259110512Tube in DrypackOrder product
74ALVCH16843DGG74ALVCH16843DGGY935259110518Reel 13" Q1/T1 in DrypackOrder product
74ALVCH16843DGG74ALVCH16843DGG:11935259110112Bulk PackOrder product
74ALVCH16843DGG74ALVCH16843DGG,11935259110118Reel 13" Q1/T1Order product


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