Overview
The CD4049UBDW is a CMOS hex inverting buffer and logic-level converter produced by Texas Instruments. This device is part of the 4000/14000/40000 series and is designed to provide high-performance logic functions. The CD4049UBDW features six inverting buffers, each capable of driving two TTL or DTL loads directly. It operates with a single supply voltage (VCC) and can handle logic-level conversion between CMOS and TTL/DTL systems.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Supply Voltage (VCC) | 3.0 | 18.0 | V | |
| Operating Temperature | -55.0 | 125.0 | °C | |
| Input Low Voltage (VIL) | 1.0 | 2.5 | V | |
| Input High Voltage (VIH) | 4.0 | V | ||
| Output Low Voltage (VOL) | 0.05 | 0.05 | V | |
| Output High Voltage (VOH) | 4.95 | 5.0 | V (at VCC = 5V) | |
| Output Low Current (IOL) | 2.6 | 6.4 | mA (at VCC = 5V, VOUT = 0.4V) | |
| Propagation Delay Time (tPLH) | 60 | 120 | ns (at VCC = 5V, VIN = 5V) | |
| Propagation Delay Time (tPHL) | 32 | 65 | ns (at VCC = 5V, VIN = 5V) | |
| Input Capacitance (CIN) | 15 | 22.5 | pF | |
| Package Type | SOIC (16-pin) |
Key Features
- Inverting hex buffers with six independent buffers.
- High sink current capability to drive two TTL or DTL loads directly.
- Logic-level conversion between CMOS and TTL/DTL systems using a single supply voltage (VCC).
- High input impedance and low input current (maximum of 1 µA at 18 V over the full temperature range).
- Operating supply voltage range from 3.0 V to 18.0 V.
- Wide operating temperature range from -55°C to 125°C.
- Available in various package types including SOIC, PDIP, SO, and TSSOP.
Applications
- CMOS to DTL or TTL converters.
- CMOS current sink or source drivers.
- CMOS high-to-low logic level converters.
- General-purpose logic circuits requiring inverting buffers.
- Systems needing level translation between different logic families.
Q & A
- What is the primary function of the CD4049UBDW?
The CD4049UBDW is a hex inverting buffer and logic-level converter, designed to convert CMOS logic levels to TTL/DTL levels.
- What is the supply voltage range for the CD4049UBDW?
The supply voltage range is from 3.0 V to 18.0 V.
- How many independent buffers does the CD4049UBDW have?
The CD4049UBDW has six independent inverting buffers.
- What is the maximum output low current (IOL) of the CD4049UBDW?
The maximum output low current (IOL) is 6.4 mA at VCC = 5V and VOUT = 0.4V.
- What are the typical propagation delay times for the CD4049UBDW?
The typical propagation delay times are 60 ns for tPLH and 32 ns for tPHL at VCC = 5V and VIN = 5V.
- What are the common applications of the CD4049UBDW?
Common applications include CMOS to DTL or TTL converters, CMOS current sink or source drivers, and CMOS high-to-low logic level converters.
- What is the operating temperature range of the CD4049UBDW?
The operating temperature range is from -55°C to 125°C.
- What package types are available for the CD4049UBDW?
The device is available in SOIC, PDIP, SO, and TSSOP package types.
- What is the input capacitance of the CD4049UBDW?
The input capacitance is between 15 pF and 22.5 pF.
- Is the CD4049UBDW compliant with RoHS regulations?
Yes, the CD4049UBDW is compliant with EU RoHS, China RoHS, and REACH regulations.
