Specifications
| Type | Description |
|---|---|
| Part Number | CD4049UB |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package Case | N (PDIP-16) 6.35 mm x 19.30 mm; D (SOIC-16) 9.90 mm x 3.91 mm; DW (SOIC-16) 10.30 mm x 7.50 mm; SO/NS (SO-16) 10.30 mm x 5.30 mm; PW (TSSOP-16) 5.00 mm x 4.40 mm |
| Logic Function | Hex inverting buffer and converter; condition: CD4049UB |
| Number of Channels | 6 identical units; condition: per device |
| Logic-Level Conversion | Input high level can exceed VCC; condition: used for logic-level conversions |
| TTL/DTL Drive Capability | Can drive directly two DTL or TTL loads; condition: VCC=5 V, VOL<=0.4 V, IOL>=3.3 mA |
| Supply Voltage Absolute Maximum | -0.5 to 20 V; condition: VCC to VSS, over operating free-air temperature range |
| DC Input Current Absolute Maximum | +/-10 mA; condition: any one input |
| Lead Temperature | 265 °C; condition: SOIC, lead tips only, soldering 10 s |
| Junction Temperature | 150 °C; condition: absolute maximum rating |
| Storage Temperature | -65 to 150 °C; condition: absolute maximum rating |
| ESD Rating HBM | +/-1500 V; condition: ANSI/ESDA/JEDEC JS-001 |
| ESD Rating CDM | +/-1000 V; condition: JEDEC JESD22C101 |
| Recommended Supply Voltage | 3 to 18 V; condition: recommended operating conditions |
| Operating Free-Air Temperature | -55 to 125 °C; condition: recommended operating conditions |
| Output Low Sink Current | min 2.6 mA, typ 5.2 mA; condition: VOUT=0.4 V, VIN=0 or 5 V, VCC=4.5 V, TA=25°C |
| Output Low Sink Current | min 3.2 mA, typ 6.4 mA; condition: VOUT=0.4 V, VIN=0 or 5 V, VCC=5 V, TA=25°C |
| Output Low Sink Current | min 8 mA, typ 16 mA; condition: VOUT=0.5 V, VIN=0 or 10 V, VCC=10 V, TA=25°C |
| Output Low Sink Current | min 24 mA, typ 48 mA; condition: VOUT=1.5 V, VIN=0 or 15 V, VCC=15 V, TA=25°C |
| Output High Source Current | min -0.65 mA, typ -1.2 mA; condition: VOUT=4.6 V, VIN=0 or 5 V, VCC=5 V, TA=25°C |
| Output High Source Current | min -2.1 mA, typ -3.9 mA; condition: VOUT=2.5 V, VIN=0 or 5 V, VCC=5 V, TA=25°C |
| Output High Source Current | min -1.65 mA, typ -3 mA; condition: VOUT=9.5 V, VIN=0 or 10 V, VCC=10 V, TA=25°C |
| Output High Source Current | min -4.3 mA, typ -8 mA; condition: VOUT=1.3 V, VIN=0 or 15 V, VCC=15 V, TA=25°C |
| Input Low Voltage | max 1 V; condition: CD4049UB, VOUT=4.5 V, VCC=5 V, full temperature range |
| Input Low Voltage | max 2 V; condition: CD4049UB, VOUT=9 V, VCC=10 V, full temperature range |
| Input Low Voltage | max 2.5 V; condition: CD4049UB, VOUT=13.5 V, VCC=15 V, full temperature range |
| Input High Voltage | min 4 V; condition: CD4049UB, VOUT=0.5 V, VCC=5 V, full listed temperatures |
| Input High Voltage | min 8 V; condition: CD4049UB, VOUT=1 V, VCC=10 V, full listed temperatures |
| Input High Voltage | min 12.5 V; condition: CD4049UB, VOUT=1.5 V, VCC=15 V, full listed temperatures |
| Quiescent Device Current | typ 0.02 µA, max 1 µA; condition: VIN=0 or 5 V, VCC=5 V, TA=25°C |
| Quiescent Device Current | typ 0.02 µA, max 2 µA; condition: VIN=0 or 10 V, VCC=10 V, TA=25°C |
| Quiescent Device Current | typ 0.02 µA, max 4 µA; condition: VIN=0 or 15 V, VCC=4 V, TA=25°C |
| Quiescent Device Current | typ 0.04 µA, max 20 µA; condition: VIN=0 or 20 V, VCC=20 V, TA=25°C |
| Output Low Voltage | typ 0 V, max 0.05 V; condition: VIN=0 or 5 V, VCC=5 V, TA=25°C |
| Output Low Voltage | typ 0 V, max 0.05 V; condition: VIN=0 or 10 V, VCC=10 V, TA=25°C |
| Output Low Voltage | typ 0 V, max 0.05 V; condition: VIN=0 or 15 V, VCC=15 V, TA=25°C |
| Output High Voltage | min 4.95 V, typ 5 V; condition: VIN=0 or 5 V, VCC=5 V, TA=25°C |
| Output High Voltage | min 9.95 V, typ 10 V; condition: VIN=0 or 10 V, VCC=10 V, TA=25°C |
| Output High Voltage | min 14.95 V, typ 15 V; condition: VIN=0 or 15 V, VCC=15 V, TA=25°C |
| Input Current | typ +/-0.00001 µA, max +/-0.1 µA; condition: VIN=0 or 18 V, VCC=18 V, TA=25°C |
| Propagation Delay tPLH | typ 60 ns, max 120 ns; condition: CD4049UB, VIN=5 V, VCC=5 V, TA=25°C, tr=tf=20 ns, CL=50 pF, RL=200 kOhm |
| Propagation Delay tPLH | typ 32 ns, max 65 ns; condition: CD4049UB, VIN=10 V, VCC=10 V, TA=25°C, tr=tf=20 ns, CL=50 pF, RL=200 kOhm |
| Propagation Delay tPLH | typ 45 ns, max 90 ns; condition: CD4049UB, VIN=10 V, VCC=5 V, TA=25°C, tr=tf=20 ns, CL=50 pF, RL=200 kOhm |
| Propagation Delay tPHL | typ 32 ns, max 65 ns; condition: CD4049UB, VIN=5 V, VCC=5 V, TA=25°C, tr=tf=20 ns, CL=50 pF, RL=200 kOhm |
| Propagation Delay tPHL | typ 20 ns, max 40 ns; condition: CD4049UB, VIN=10 V, VCC=10 V, TA=25°C, tr=tf=20 ns, CL=50 pF, RL=200 kOhm |
| Propagation Delay tPHL | typ 10 ns, max 20 ns; condition: CD4049UB, VIN=15 V, VCC=5 V, TA=25°C, tr=tf=20 ns, CL=50 pF, RL=200 kOhm |
| Datasheet Status | request_only |
Product Overview
The CD4049UB is a Texas Instruments CMOS hex inverting buffer and converter in the Signal_Chain category. Each device contains 6 identical inverting buffer units. The device is specified for logic-level conversion because its input high level can exceed VCC, supporting interface use cases where input and supply domains differ within the stated ratings.
Recommended operation covers a 3 to 18 V supply range and -55 to 125 °C free-air temperature range. At 5 V operation, the device can directly drive two DTL or TTL loads when VOL is <=0.4 V and IOL is >=3.3 mA. Output low sink current reaches min 3.2 mA, typ 6.4 mA at VCC=5 V and VOUT=0.4 V, while propagation delay values include tPLH typ 60 ns, max 120 ns and tPHL typ 32 ns, max 65 ns at VCC=5 V.
Available package cases include N PDIP-16, D SOIC-16, DW SOIC-16, SO/NS SO-16, and PW TSSOP-16. Assembly-related limits include 265 °C lead-tip temperature for SOIC soldering for 10 s, 150 °C junction temperature, and -65 to 150 °C storage temperature.
Key Features
- CMOS hex inverting buffer and converter function
- Six identical inverting buffer units per device
- Input high level can exceed VCC for conversion
- Directly drives two DTL or TTL loads at 5 V
- Recommended 3 to 18 V supply voltage range
- -55 to 125 °C operating free-air temperature
- Absolute maximum VCC to VSS range of -0.5 to 20 V
- HBM ESD rating of +/-1500 V
- CDM ESD rating of +/-1000 V
- Propagation delay tPHL typ 10 ns at VIN=15 V, VCC=5 V
Typical Applications
- Logic-level conversion
- CMOS inverting buffer stages
- DTL load driving
- TTL load driving
- Multi-channel signal inversion
- Wide-supply digital interfacing
Procurement Notes
When requesting a quote for CD4049UB, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For analog and signal-chain sourcing, supply voltage, bandwidth, accuracy, noise level, package, temperature grade, input/output configuration and qualification requirements should be verified before approval.
FAQ
What logic function does the CD4049UB provide?
The CD4049UB provides a hex inverting buffer and converter function. The device contains 6 identical units per device and is specified as a CMOS hex inverting buffer from Texas Instruments.
Can CD4049UB inputs exceed the device supply voltage?
Yes. The extracted datasheet facts state that the input high level can exceed VCC when the CD4049UB is used for logic-level conversions. Operation must remain within the listed absolute maximum and recommended operating conditions.
What supply voltage range is recommended for CD4049UB?
The recommended supply voltage range is 3 to 18 V. The absolute maximum VCC-to-VSS range is -0.5 to 20 V, and the recommended operating free-air temperature range is -55 to 125 °C.
Which package options are listed for CD4049UB?
The listed package cases are N PDIP-16, D SOIC-16, DW SOIC-16, SO/NS SO-16, and PW TSSOP-16, with package body dimensions provided for each option in the extracted facts.
What output drive capability is specified at 5 V?
At VCC=5 V, VOL<=0.4 V, and IOL>=3.3 mA, the CD4049UB can directly drive two DTL or TTL loads. At VOUT=0.4 V and TA=25°C, output low sink current is min 3.2 mA and typ 6.4 mA.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: June 30, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.