Product details

Technology family CD4000 Number of channels 6 IOL (max) (mA) 18 IOH (max) (mA) -3.1 Supply current (max) (µA) 600 Input type Standard CMOS Output type Push-Pull Features Over-voltage tolerant inputs, Standard speed (tpd > 50ns), Unbuffered Rating Catalog Operating temperature range (°C) -55 to 125
Technology family CD4000 Number of channels 6 IOL (max) (mA) 18 IOH (max) (mA) -3.1 Supply current (max) (µA) 600 Input type Standard CMOS Output type Push-Pull Features Over-voltage tolerant inputs, Standard speed (tpd > 50ns), Unbuffered Rating Catalog Operating temperature range (°C) -55 to 125
TSSOP (PW) 16 32 mm² (5 mm × 6.4 mm) SOIC (D) 16 59.4 mm² (9.9 mm × 6 mm) PDIP (N) 16 181.42 mm² (19.3 mm × 9.4 mm) SOP (NS) 16 79.56 mm² (10.2 mm × 7.8 mm) SOIC (DW) 16 106.09 mm² (10.3 mm × 10.3 mm)
  • CD4049UB inverting
  • CD4050B noninverting
  • High sink current for driving 2 TTL loads
  • High-to-low level logic conversion
  • 100% tested for quiescent current at 20V
  • Maximum input current of 1µA at 18V over full package temperature range; 100nA at 18V and 25°C
  • 5V, 10V, and 15V parametric ratings
  • CD4049UB inverting
  • CD4050B noninverting
  • High sink current for driving 2 TTL loads
  • High-to-low level logic conversion
  • 100% tested for quiescent current at 20V
  • Maximum input current of 1µA at 18V over full package temperature range; 100nA at 18V and 25°C
  • 5V, 10V, and 15V parametric ratings

The CD4049UB and CD4050B devices are inverting and noninverting hex buffers, and feature logic-level conversion using only one supply voltage (VCC). The input-signal high level (VIH) can exceed the VCC supply voltage when these devices are used for logic-level conversions. These devices are intended for use as CMOS to DTL or TTL converters and can drive directly two DTL or TTL loads. VCC = 5V, VOL ≤ 0.4V, and IOL ≥ 3.3mA.

The CD4049UB and CD4050B devices are inverting and noninverting hex buffers, and feature logic-level conversion using only one supply voltage (VCC). The input-signal high level (VIH) can exceed the VCC supply voltage when these devices are used for logic-level conversions. These devices are intended for use as CMOS to DTL or TTL converters and can drive directly two DTL or TTL loads. VCC = 5V, VOL ≤ 0.4V, and IOL ≥ 3.3mA.

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Technical documentation

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* Data sheet CD4049UB and CD4050B CMOS Hex Inverting Buffer and Converter datasheet (Rev. L) PDF | HTML Feb 4, 2026
Application note Understanding Buffered and Unbuffered CD4xxxB Series Device Characteristics Dec 3, 2001

Design & development

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Evaluation board

14-24-LOGIC-EVM — Logic product generic evaluation module for 14-pin to 24-pin D, DB, DGV, DW, DYY, NS and PW packages

The 14-24-LOGIC-EVM evaluation module (EVM) is designed to support any logic device that is in a 14-pin to 24-pin D, DW, DB, NS, PW, DYY or DGV package,

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Simulation model

CD4049UB PSPICE Model (Rev. A)

SCHM019A.ZIP (7 KB) - PSpice model
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Reference design

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Supported products & hardware
Package Pins CAD symbols, footprints & 3D models
TSSOP (PW) 16 Ultra Librarian
SOIC (D) 16 Ultra Librarian
PDIP (N) 16 Ultra Librarian
SOP (NS) 16 Ultra Librarian
SOIC (DW) 16 Ultra Librarian

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