Overview
The CD4049UBM is a hex inverting buffer integrated circuit (IC) produced by Harris Corporation, now part of Texas Instruments. It is a monolithic complementary MOS (CMOS) device constructed with N- and P-channel enhancement mode transistors. This IC is designed for various digital circuit applications, including logic level conversion, signal inversion, and driving multiple loads. The CD4049UBM is known for its wide supply voltage range, high source and sink current capability, and special input protection that allows input voltages to exceed the supply voltage.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Supply Voltage (VDD) | 3.0V | 15V | V | |
| Input Voltage (VIN) | 0V | 18V | V | |
| Output Voltage (VOUT) | 0V | VDD + 0.5V | V | |
| Operating Temperature Range (TA) | -55°C | 125°C | °C | |
| Propagation Delay Time (tPHL) at VDD = 5V | 30ns | 65ns | ns | |
| High Level Output Current | -5.2mA | mA | ||
| Low Level Output Current | 26mA | mA | ||
| Quiescent Current | 40nA | nA |
Key Features
- Wide supply voltage range: 3.0V to 15V
- Direct drive to 2 TTL loads at 5.0V over the full operating temperature range
- High source and sink current capability
- Special input protection permits input voltages greater than VDD
- High-to-low logic level conversion
- Low power consumption and high noise immunity
Applications
- CMOS hex inverter/buffer
- CMOS to DTL/TTL hex converter
- CMOS current 'sink' or 'source' driver
- CMOS high-to-low logic level converter
Q & A
- What is the CD4049UBM used for?
The CD4049UBM is used as a hex inverting buffer, CMOS to DTL/TTL converter, CMOS current driver, and for high-to-low logic level conversion. - What is the supply voltage range of the CD4049UBM?
The supply voltage range is from 3.0V to 15V. - Can the CD4049UBM drive TTL loads directly?
Yes, it can drive directly two DTL/TTL loads at 5.0V over the full operating temperature range. - What is the maximum operating temperature of the CD4049UBM?
The maximum operating temperature is 125°C. - What is the propagation delay time of the CD4049UBM at VDD = 5V?
The propagation delay time (tPHL) at VDD = 5V is typically 65ns. - What are the high and low level output currents of the CD4049UBM?
The high level output current is -5.2mA, and the low level output current is 26mA. - What is the quiescent current of the CD4049UBM?
The quiescent current is 40nA. - Is the CD4049UBM suitable for high noise environments?
Yes, it offers high noise immunity. - Can the input voltage exceed the supply voltage (VDD) in the CD4049UBM?
Yes, the input voltage can exceed the supply voltage when used for logic level conversions. - What package types are available for the CD4049UBM?
The CD4049UBM is available in Dual-In-Line Package (DIP) and Small Outline IC (SOIC) packages.
