SN7448N

有效庫存6,751

Converts binary-coded decimal to 7-segment display signals

  • 製造商零件號 # : SN7448N

  • 包裝/封裝: PDIP-16

  • 零件狀態 : OBSOLETE

  • 製造商: Texas Instruments

  • 產品分類 : Signal Switches, Multiplexers, Decoders

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SN7448N 數據表

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詳細說明

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

主要特徵

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

應用

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

規格

以下是所選零件的基本參數,涉及零件的特性及其所屬類別。

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

數據表 PDF

數據表記錄了器件的特性、絕對最大額定值、應用等,這對於作為器件特定應用的整體指南大有裨益。

初步規格 SN7448N PDF 下載

常見問題解答

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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