Overview
The CD4049AQB is a CMOS Hex Buffer/Converter integrated circuit produced by Harris Corporation. This device is part of the 4000 series of CMOS logic circuits and is designed to provide high-performance buffering and logic-level conversion capabilities.
The CD4049AQB is particularly useful in applications requiring the conversion of CMOS logic levels to DTL (Diode-Transistor Logic) or TTL (Transistor-Transistor Logic) levels, making it a versatile component in various digital systems.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Manufacturer | Harris Corporation | - |
| Package | PDIP, SOIC, TSSOP, etc. | - |
| Supply Voltage (VCC) | 5 V, 10 V, 15 V | - |
| Input Current (Max) | 1 µA at 18 V over full temperature range | - |
| Output High Voltage (VOH) | 4.95 V at VCC = 5 V, 9.95 V at VCC = 10 V, 14.95 V at VCC = 15 V | - |
| Propagation Delay Time | 25-120 ns depending on VCC and input conditions | - |
| Operating Temperature | -55°C to 125°C | - |
| RoHS Status | RoHS non-compliant | - |
Key Features
- Inverting and Non-Inverting Buffers: The CD4049AQB includes both inverting and non-inverting buffers, making it versatile for various logic applications.
- High Sink Current: Capable of driving two DTL or TTL loads directly.
- Logic-Level Conversion: Can convert CMOS logic levels to DTL or TTL levels using a single supply voltage.
- Low Input Current: Maximum input current of 1 µA at 18 V over the full package temperature range.
- Wide Operating Temperature Range: Operates from -55°C to 125°C.
Applications
- CMOS to DTL or TTL Converters: Ideal for converting CMOS logic levels to DTL or TTL levels in mixed-logic systems.
- CMOS Current Sink or Source Drivers: Can be used as drivers for CMOS circuits that need to interface with other logic families.
- High-to-Low Logic Level Converters: Useful in applications requiring the conversion of high logic levels to low logic levels.
Q & A
- What is the primary function of the CD4049AQB?
The primary function of the CD4049AQB is to act as a hex buffer/converter, converting CMOS logic levels to DTL or TTL levels.
- What are the available package types for the CD4049AQB?
The CD4049AQB is available in PDIP, SOIC, TSSOP, and other packages.
- What is the maximum input current of the CD4049AQB?
The maximum input current is 1 µA at 18 V over the full package temperature range.
- What is the operating temperature range of the CD4049AQB?
The operating temperature range is from -55°C to 125°C.
- Can the CD4049AQB drive TTL loads directly?
Yes, the CD4049AQB can drive two DTL or TTL loads directly.
- What are some common applications of the CD4049AQB?
Common applications include CMOS to DTL or TTL converters, CMOS current sink or source drivers, and high-to-low logic level converters.
- Is the CD4049AQB RoHS compliant?
No, the CD4049AQB is RoHS non-compliant.
- What are the typical propagation delay times for the CD4049AQB?
The propagation delay times range from 25 to 120 ns depending on the supply voltage and input conditions.
- Can the input signal high level exceed the VCC supply voltage?
Yes, the input signal high level can exceed the VCC supply voltage when used for logic-level conversions.
- What is the maximum output high voltage (VOH) for the CD4049AQB?
The maximum output high voltage (VOH) varies with the supply voltage: 4.95 V at VCC = 5 V, 9.95 V at VCC = 10 V, and 14.95 V at VCC = 15 V.
