DM7447AN
Product Overview
Category
The DM7447AN is a BCD to 7-segment decoder/driver integrated circuit.
Use
It is commonly used in digital display applications to convert binary-coded decimal (BCD) input into the corresponding 7-segment display output.
Characteristics
- Converts BCD input to 7-segment display output
- Low power consumption
- High noise immunity
- Wide supply voltage range
Package
The DM7447AN is available in a 16-pin dual in-line package (DIP).
Essence
The essence of the DM7447AN lies in its ability to simplify the interface between BCD inputs and 7-segment displays, making it an essential component in digital display systems.
Packaging/Quantity
The DM7447AN is typically sold in tubes or reels containing multiple units, with quantities varying based on supplier and customer requirements.
Specifications
- Supply Voltage: 4.75V to 5.25V
- Input Current: 0.1mA
- Operating Temperature Range: -40°C to 85°C
- Output Current: 16.5mA per segment
Detailed Pin Configuration
- A
- B
- C
- D
- LT/BI
- LE
- BL
- GND
- a
- f
- e
- d
- c
- DP
- Vcc
- b
Functional Features
- BCD input to 7-segment display output conversion
- Latch enable for data retention
- Lamp test and blanking capability
- Built-in ripple-blanking input
Advantages
- Simplifies interfacing BCD inputs with 7-segment displays
- Low power consumption
- High noise immunity
- Versatile and widely compatible
Disadvantages
- Limited to BCD input format
- Requires additional components for driving multiplexed displays
Working Principles
The DM7447AN decodes the BCD input and drives the corresponding segments of the 7-segment display based on the input value. It utilizes internal logic to perform the conversion and control the display outputs.
Detailed Application Field Plans
The DM7447AN finds application in various digital display systems, including: - Digital clocks - Counters - Timers - Instrumentation panels - Scoreboards
Detailed and Complete Alternative Models
- SN7447N
- CD4511BE
- MC14495P
In conclusion, the DM7447AN is a versatile and essential component in digital display systems, offering efficient BCD to 7-segment display conversion with low power consumption and high noise immunity.
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What is DM7447AN?
- DM7447AN is a BCD-to-7-segment decoder/driver IC that converts binary-coded decimal (BCD) input into the corresponding 7-segment display outputs.
What is the maximum voltage rating for DM7447AN?
- The maximum voltage rating for DM7447AN is typically around 5V.
How many BCD inputs does DM7447AN have?
- DM7447AN has 4 BCD inputs, labeled A, B, C, and D.
Can DM7447AN directly drive a common cathode 7-segment display?
- No, DM7447AN is designed to drive common anode 7-segment displays. For common cathode displays, an additional inverter or a different driver circuit would be required.
What is the maximum current output per segment for DM7447AN?
- The maximum current output per segment for DM7447AN is typically around 20mA.
How does DM7447AN handle invalid BCD inputs?
- DM7447AN may produce unpredictable outputs when presented with invalid BCD inputs. It's important to ensure that only valid BCD inputs are used.
Can DM7447AN be cascaded to drive multiple 7-segment displays?
- Yes, DM7447AN can be cascaded to drive multiple 7-segment displays by connecting the outputs of one DM7447AN to the inputs of another.
What is the power consumption of DM7447AN?
- The power consumption of DM7447AN is relatively low, typically in the range of a few milliwatts.
Does DM7447AN have built-in latching or memory functions?
- No, DM7447AN does not have built-in latching or memory functions. It simply decodes the BCD input to drive the 7-segment display outputs.
What are some common applications for DM7447AN?
- Common applications for DM7447AN include digital clocks, frequency counters, and any other system requiring BCD-to-7-segment decoding for display purposes.