74HC4511; 74HCT4511

BCD to 7-segment latch/decoder/driver

The 74HC4511; 74HCT4511 is a BCD to 7-segment latch/decoder/driver with four address inputs (A, B, C, D), a latch enable input (LE), a ripple blanking input (BI), a lamp test input (LT), and seven segment outputs (a to g). When LE is LOW, the state of the segment outputs (a to g) is determined by the data on A to D. When LE goes HIGH, the last data present on A to D are stored in the latches and the segment outputs remain stable. When LT is LOW, all the segment outputs are HIGH independent of all other input conditions. With LT HIGH, a LOW on BI forces all segment outputs LOW. The inputs LT and BI do not affect the latch circuit. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.

Features and benefits

  • Complies with JEDEC standard no. 7A
  • Input levels:
    • For 74HC4511: CMOS level
    • For 74HCT4511: TTL level
  • Latch storage of BCD inputs
  • Blanking input
  • Lamp test input
  • Driving common cathode LED displays
  • Guaranteed 10 mA drive capability per output
  • ESD protection:
    • HBM JESD22-A114F exceeds 2000 V
    • MM JESD22-A115-A exceeds 200 V
  • Specified from -40 °C to +85 °C and -40 °C to +125 °C


  • Driving LED displays
  • Driving incandescent displays
  • Driving fluorescent displays
  • Driving LCD displays
  • Driving gas discharge displays


Type numberProduct statusVCC (V)Logic switching levelsOutput drive capability (mA)tpd (ns)Power dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
74HC4511DProduction2.0 - 6.0CMOS-1028low-40~125721.029SO16
74HCT4511DProduction4.5 - 5.5TTL-1028low-40~125691.027.4SO16


Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
Reel 13" Q1/T1 CECCActive74HC4511D74HC4511D,653
( 9337 148 80653 )
Bulk Pack, CECCActive74HC4511D74HC4511D,652
( 9337 148 80652 )
Reel 13" Q1/T1 CECCActive74HCT4511D74HCT4511D,653
( 9337 153 60653 )
Bulk Pack, CECCActive74HCT4511D74HCT4511D,652
( 9337 153 60652 )

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
74HC4511D74HC4511D,65374HC4511Dweek 30, 200484.96.621.51E811
74HC4511D74HC4511D,65274HC4511Dweek 30, 200484.96.621.51E811
74HCT4511D74HCT4511D,65374HCT4511Dweek 6, 200484.96.621.51E811
74HCT4511D74HCT4511D,65274HCT4511Dweek 6, 200484.96.621.51E811
Quality and reliability disclaimer

Documentation (6)

File nameTitleTypeDate
74HC_HCT4511BCD to 7-segment latch, decoder, driverData sheet2017-03-17
AN11044Pin FMEA 74HC/74HCT familyApplication note2019-01-09
HCT_USER_GUIDEHC/T User GuideUser manual1997-10-31
SOT109-1plastic, small outline package; 16 leads; 1.27 mm pitch; 9.9 mm x 3.9 mm x 1.75 mm bodyPackage information2021-01-06
SO-SOJ-WAVEFootprint for wave solderingWave soldering2009-10-08
SO-SOJ-REFLOWFootprint for reflow solderingReflow soldering2009-10-08


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