Overview
The CD40147BE is a CMOS priority encoder integrated circuit produced by Texas Instruments. This device is designed to encode ten data input lines (0-9) into a four-line BCD (Binary Coded Decimal) output. The highest priority line is line 9, ensuring that only the highest-order data line is encoded. This encoder is functionally similar to the TTL 54/74147 if pin 15 is tied low.
Key Specifications
| Specification | Value |
|---|---|
| Logic Type | Priority Encoder |
| Number of Data Input Lines | 10 (0-9) |
| Output Format | Four-line BCD (8, 4, 2, 1) |
| Low Level Output Current | 1.5 mA |
| Maximum Clock Frequency | 8 MHz |
| Operating Temperature Range | -55°C to 125°C |
| Package Types | PDIP, SOIC, TSSOP |
| Number of Pins | 16 |
Key Features
- Prioritizes the highest-order data line for encoding.
- Encodes ten data input lines into a four-line BCD output.
- All inputs and outputs are buffered.
- Each output can drive one TTL low-power Schottky load.
- Available in various package types including PDIP, SOIC, and TSSOP.
- Compliant with EU RoHS requirements and meets low halogen standards.
Applications
- Digital encoding and decoding systems.
- Priority logic circuits.
- BCD to decimal conversion systems.
- Industrial control systems requiring priority encoding.
- Automated systems where data prioritization is necessary.
Q & A
- What is the primary function of the CD40147BE?
The CD40147BE is a priority encoder that converts ten data input lines into a four-line BCD output, prioritizing the highest-order data line.
- What are the package options available for the CD40147BE?
The CD40147BE is available in PDIP, SOIC, and TSSOP packages.
- What is the operating temperature range of the CD40147BE?
The operating temperature range is -55°C to 125°C.
- Can the CD40147BE drive TTL loads?
Yes, each output can drive one TTL low-power Schottky load.
- Is the CD40147BE RoHS compliant?
Yes, the CD40147BE is RoHS compliant and meets low halogen standards.
- What is the maximum clock frequency for the CD40147BE?
The maximum clock frequency is 8 MHz.
- How many data input lines does the CD40147BE have?
The CD40147BE has ten data input lines (0-9).
- What is the output format of the CD40147BE?
The output is in four-line BCD format (8, 4, 2, 1).
- Is the CD40147BE functionally similar to any other IC?
Yes, it is functionally similar to the TTL 54/74147 if pin 15 is tied low.
- What is the low level output current of the CD40147BE?
The low level output current is 1.5 mA.
