74HC(T)40105

4-bit x 16-word FIFO register


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The 74HC/HCT40105 are high-speed Si-gate CMOS devices and are pin compatible with the "40105" of the "4000B" series. They are specified in compliance with JEDEC standard no. 7A.

The 74HC/HCT40105 are first-in/first-out (FIFO) "elastic" storage registers that can store sixteen 4-bit words. The "40105" is capable of handling input and output data at different shifting rates. This feature makes it particularly useful as a buffer between asynchronous systems. Each word position in the register is clocked by a control flip-flop, which stores a marker bit. A "1" signifies that the position's data is filled and a "0" denotes a vacancy in that position. The control flip-flop detects the state of the preceding flip-flop and communicates its own status to the succeeding flip-flop. When a control flip-flop is in the "0" state and sees a "1" in the preceding flip-flop, it generates a clock pulse that transfers data from the preceding four data latches into its own four data latches and resets the preceding flip-flop to "0". The first and last control flip-flops have buffered outputs. Since all empty locations "bubble" automatically to the input end, and all valid data ripples through to the output end, the status of the first control flip-flop (data-in ready output - DIR) indicates if the FIFO is full, and the status of the last flip-flop (data-out ready output - DOR) indicates if the FIFO contains data. As the earliest data is removed from the bottom of the data stack (output end), all data entered later will automatically ripple toward the output.

Features and benefits

  • Independent asynchronous inputs and outputs
  • Expandable in either direction
  • Reset capability
  • Status indicators on inputs and outputs
  • 3-state outputs
  • Output capability: standard
  • ICC category: MSI

Applications

  • High-speed disc or tape controller
  • Communications buffer.

Parametrics of this product

Type numberPackageNr of pinsPackage nameProduct statustpd(ns)VCC(V)FamilyPower dissipation considerationsLogic switching levelsOutput drive capability(mA)fmax(MHz)DescriptionTamb(Cel)
74HC40105DSOT109-1
(SO16)		16SO16Production152.0 - 6.0HC(T)lowCMOSLow304-bit x 16-word FIFO register-40~125
74HC40105DBSOT338-1
(SSOP16)		16SSOP16Production152.0 - 6.0HC(T)lowCMOSLow304-bit x 16-word FIFO register-40~125
74HC40105NSOT38-4
(DIP16)		16DIP16Production152.0 - 6.0HC(T)lowCMOSLow304-bit x 16-word FIFO register-40~125
74HC40105PWSOT403-1
(TSSOP16)		16TSSOP16Production152.0 - 6.0HC(T)lowCMOSLow304-bit x 16-word FIFO register-40~125
74HCT40105DSOT109-1
(SO16)		16SO16Production184.5 - 5.5HC(T)lowTTL+/- 4 mA284-bit x 16-word FIFO register; TTL enabled-40~125
74HCT40105DBSOT338-1
(SSOP16)		16SSOP16Production184.5 - 5.5HC(T)lowTTL+/- 4 mA284-bit x 16-word FIFO register; TTL enabled-40~125
74HCT40105NSOT38-4
(DIP16)		16DIP16Production184.5 - 5.5HC(T)lowTTL+/- 4 mA284-bit x 16-word FIFO register; TTL enabled-40~125

Package

Type numberOrderable part numberOrdering code (12NC)Product statusPackagePackingMarking
74HC40105D74HC40105D,6529337 147 40652Volume productionSOT109-1
(SO16) 		Bulk Pack, CECCStandard Marking
74HC40105D74HC40105D,6539337 147 40653Volume productionSOT109-1
(SO16) 		Reel Pack, SMD, 13", CECCStandard Marking
74HC40105DB74HC40105DB,1129351 893 50112Volume productionSOT338-1
(SSOP16) 		TubeStandard Marking
74HC40105DB74HC40105DB,1189351 893 50118Volume productionSOT338-1
(SSOP16) 		Reel Pack, SMD, 13"Standard Marking
74HC40105N74HC40105N,6529336 696 60652Volume productionSOT38-4
(DIP16) 		Bulk Pack, CECCStandard Marking
74HC40105PW74HC40105PW,1129351 890 70112Volume productionSOT403-1
(TSSOP16) 		TubeStandard Marking
74HC40105PW74HC40105PW,1189351 890 70118Volume productionSOT403-1
(TSSOP16) 		Reel Pack, SMD, 13"Standard Marking
74HCT40105D74HCT40105D,1129337 152 20112Volume productionSOT109-1
(SO16) 		Bulk PackStandard Marking
74HCT40105D74HCT40105D,1189337 152 20118Volume productionSOT109-1
(SO16) 		Reel Pack, SMD, 13"Standard Marking
74HCT40105DB74HCT40105DB,1129351 899 60112Volume productionSOT338-1
(SSOP16) 		TubeStandard Marking
74HCT40105DB74HCT40105DB,1189351 899 60118Volume productionSOT338-1
(SSOP16) 		Reel Pack, SMD, 13"Standard Marking
74HCT40105N74HCT40105N,1129336 702 90112Volume productionSOT38-4
(DIP16) 		Bulk PackStandard Marking

Outline drawing

Package VersionPackage NamePackage DescriptionReference CodesIssue Date
SOT338-1SSOP16plastic shrink small outline package; 16 leads; body width 5.3 mmMO-150 (JEDEC); 2003-02-19
SOT403-1TSSOP16plastic thin shrink small outline package; 16 leads; body width 4.4 mmMO-153 (JEDEC); 2003-02-18
SOT109-1SO16plastic small outline package; 16 leads; body width 3.9 mmMS-012 (JEDEC); 076E07 (IEC); 2003-02-19
SOT38-4DIP16plastic dual in-line package; 16 leads (300 mil)2003-02-13

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHSLeadfree conversion dateRHFIFR (FIT)MTBF (hours)MSLMSL LF
74HC40105D74HC40105D,65274HC40105Dweek 30, 20046.621.5105740181268883E811
74HC40105D74HC40105D,65374HC40105Dweek 30, 20046.621.5105740181268883E811
74HC40105DB74HC40105DB,11274HC40105DBweek 17, 20056.621.5105740181268883E811
74HC40105DB74HC40105DB,11874HC40105DBweek 17, 20056.621.5105740181268883E811
74HC40105N74HC40105N,65274HC40105NAlways Pb-free6.621.5105740181268883E8NANA
74HC40105PW74HC40105PW,11274HC40105PWweek 10, 20056.621.5105740181268883E811
74HC40105PW74HC40105PW,11874HC40105PWweek 10, 20056.621.5105740181268883E811
74HCT40105D74HCT40105D,11274HCT40105Dweek 4, 20046.621.5105740181268883E811
74HCT40105D74HCT40105D,11874HCT40105Dweek 4, 20046.621.5105740181268883E811
74HCT40105DB74HCT40105DB,11274HCT40105DBweek 17, 20056.621.5105740181268883E811
74HCT40105DB74HCT40105DB,11874HCT40105DBweek 17, 20056.621.5105740181268883E811
74HCT40105N74HCT40105N,11274HCT40105NAlways Pb-free6.621.5105740181268883E8NANA
Quality and reliability disclaimer

Quality and reliability disclaimer

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Documentation for this product

File nameTitleTypeFormatDate
74HC_HCT40105_CNV4-bit x 16-word FIFO registerData sheetpdf1998-01-23
AN11044Pin FMEA 74HC/74HCT familyApplication notepdf2011-03-16
HCT_USER_GUIDEHC/T User GuideUser manualpdf1997-11-01

Ordering & availability

Type numberOrdering code (12NC)Orderable part numberRegionDistributorIn stockOrder quantityInventory dateBuy onlineSamples
74HCT40105D9337 152 2011274HCT40105D,112NAMOUSER ELECTRONICS6625/18/2013Buy onlineNot available
   EUAVNET EXPRESS EUROPE4005/20/2013Buy online 
74HCT40105D9337 152 2011874HCT40105D,118      Not available
74HCT40105DB9351 899 6011274HCT40105DB,112      Not available
74HCT40105DB9351 899 6011874HCT40105DB,118      Not available
74HC40105DB9351 893 5011274HC40105DB,112NAMOUSER ELECTRONICS1,2225/18/2013Buy onlineNot available
74HC40105DB9351 893 5011874HC40105DB,118      Not available
74HC40105N9336 696 6065274HC40105N,652NAAVNET EXPRESS AMERICAS1,9005/20/2013Buy onlineNot available
   NAARROW ELECTRONICS1,5005/20/2013Buy online 
   NAMOUSER ELECTRONICS8755/18/2013Buy online 
   NAFUTURE ELECTRONICS3055/19/2013Buy online 
   EUFUTURE ELECTRONICS UK3055/19/2013Buy online 
   ASIAFUTURE ELECTRONICS- ASIA3055/19/2013Buy online 
   JAPANCHIP ONE STOP10005/20/2013Buy online 
74HC40105PW9351 890 7011274HC40105PW,112NAMOUSER ELECTRONICS6805/18/2013Buy onlineNot available
74HC40105PW9351 890 7011874HC40105PW,118       
74HC40105D9337 147 4065274HC40105D,652NADIGI-KEY CORPORATION4,9445/18/2013Buy onlineNot available
   NAMOUSER ELECTRONICS9425/18/2013Buy online 
   EUAVNET EXPRESS EUROPE4005/20/2013Buy online 
74HC40105D9337 147 4065374HC40105D,653      Not available
74HCT40105N9336 702 9011274HCT40105N,112NAAVNET EXPRESS AMERICAS1,2005/20/2013Buy onlineNot available

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