SN7448N

Name: SN7448N
Rating: 4.5 (10 reviews)

Converts binary-coded decimal to 7-segment display signals

6,751 Effective Inventory

SN7448N

Effective Inventory6,751

Converts binary-coded decimal to 7-segment display signals

Manufacturer Part # : SN7448N
Package/Case: PDIP-16
Part Status : OBSOLETE
Brand: Texas Instruments
Product Categories : Signal Switches, Multiplexers, Decoders

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SN7448N DataSheet

Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!

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Details

Texas Instruments' SN7448N is a highly versatile BCD to 7-segment decoder/driver IC that offers a reliable solution for converting BCD input data into a 7-segment display output. Its four binary input pins and open-collector outputs provide flexibility and ease of use, allowing for seamless interfacing with a wide range of display types. Additionally, the active-low Ripple Blanking input improves the overall display readability by blanking leading and/or trailing zeros, enhancing the user experience. With a maximum propagation delay of 55ns, the IC can drive common cathode displays with refresh rates of up to 18 kHz, ensuring fast and responsive performance. Its wide operating voltage range of 4.75V to 5.25V and 16-pin DIP package further enhance its suitability for a variety of applications requiring BCD to 7-segment decoding

Key Features

High-efficiency, low-noise power amplifier
Wide operating frequency range for digital signal processing
Accurate temperature sensor for industrial control applications

Application

SN7448N is versatile
BCD-to-Seven Segment Decoder
Digital display applications

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Product Category !	Encoders, Decoders, Multiplexers & Demultiplexers	Product	Decoders / Demultiplexers
Logic Family	7400	Number of Input Lines	4 Input
Number of Output Lines	7 Output	Supply Voltage - Min	4.75 V
Supply Voltage - Max	5.25 V	Minimum Operating Temperature	0 C
Maximum Operating Temperature !	+ 70 C	Mounting Style	Through Hole
Package / Case	PDIP-16	Brand	Texas Instruments
Function	Decoder/Driver	Height	4.57 mm
High Level Output Current !	- 400 uA	Length	19.3 mm
Logic Type	Decoders/Demultiplexers	Low Level Output Current !	8 mA
Number of Circuits	1 Circuit	Operating Supply Voltage !	5 V
Operating Temperature Range !	0 C to + 70 C	Product Type !	Encoders, Decoders, Multiplexers & Demultiplexers
Series	SN7448	Subcategory	Logic ICs
Supply Current - Max	53 mA	Technology	Bipolar
Width	6.35 mm	Unit Weight	0.057419 oz

Datasheet PDF

Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.

Preliminary Specification SN7448N PDF Download

FAQs

What is SN7448N?

The SN7448N is a BCD to 7-segment decoder/driver integrated circuit (IC) designed by Texas Instruments. It is commonly used to convert binary-coded decimal (BCD) input into a format that can be displayed on a 7-segment LED display. The SN7448N is widely used in digital display applications such as digital clocks, frequency counters, and panel meters.

How Does SN7448N Work?

The SN7448N works by taking a 4-bit BCD input and decoding it into the appropriate signals to drive a 7-segment LED display. Each BCD input combination corresponds to a specific digit to be displayed. The SN7448N also includes output provisions for displaying hexadecimal characters A through F when required.

How Many Pins does SN7448N have and What are the Functions of the Pinout Configuration?

The SN7448N is housed in a 16-pin DIP (Dual Inline Package) package. The pinout configuration includes:

Vcc: Power supply voltage pin.
GND: Ground pin.
A, B, C, D: BCD input pins.
a, b, c, d, e, f, g: 7-segment LED output pins.
LT: Lamp test input pin.
BI: Blanking input pin.
RBI: Ripple blanking input pin.

What are the Pros and Cons of SN7448N?

Pros:

Efficient BCD to 7-segment Decoding: Provides a straightforward solution for driving 7-segment displays from BCD inputs.
Flexible Input and Output Configuration: Offers inputs for lamp test, blanking, and ripple blanking, enhancing display control.
Standard DIP Package: Easy to integrate into through-hole circuit designs.

Cons:

Limited Functionality: Designed specifically for BCD to 7-segment decoding and may not offer additional features.
Obsolete: As of the current date, the SN7448N is considered an older component, with potential availability challenges in the future.

Are There Any Equivalents/Alternatives to SN7448N for Recommendation?

The 74LS48 from Texas Instruments is a functionally equivalent alternative to the SN7448N.
An alternative to the SN7448N is the CD7448 from Intersil, which offers similar BCD to 7-segment decoding functionality.

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SN7448N

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