A2212 6T 2200KV Brushless Motor for Drone السعر الأصلي هو: 570.00 EGP.السعر الحالي هو: 390.00 EGP.


السعر الأصلي هو: 40.00 EGP.السعر الحالي هو: 25.00 EGP.

SKU: IC_7448 Categories: ,

Product: Decoder / Demultiplexer
Logic Family: 74LS
Number of Lines (Input / Output): 4 / 7
Supply Voltage – Max: 5.25 V
Supply Voltage – Min: 4.75 V
Maximum Operating Temperature: 70 C
Minimum Operating Temperature: 0 C
Number of Input Lines: 4
Number of Output Lines: 7

Segment Identification Pin Out Diagram for 7448 - BCD to 7 segement converter / driver (Common Cathode)

This package accepts a 1-2-4-8 positive-logic Binary Coded Decimal (BCD) input and converts it to the proper pattern necessary to illuminate a 7 segment display. A high output is intended to light the segment. (Common cathode), meaning the negative connection of all of the LEDs is tied together.

The outputs are open-collector but have internal 2K ohm pull-up resistors and have a maximum low-level output sink current of 6 milliamperes (6mA).

For normal operation the Lamp Test pin and BI/RBO (OUT) m

To build a simple 0-9 digital counter, consider using the 7490 decade counter. It’s 4 outputs can be directly interfaced to the 7448 / 7447 and the binary coded decimal will be converted into the appropriate segments for the LED display. Other than a little more conditional logic connections and a few more stages, there’s nothing stopping you from building a full digital clock with hours, minutes, and seconds.

Shown above, is an example application of the 74LS48 7-seg decoder circuit. The decimal point indicator on this volt-meter as well as the colons “:” on clocks, are not controllable by the 7-seg decoder. In circuits involving a microcontroller, if I/O pins are available, 7448 / 7447 ICs (and similar) are generally omitted to save money. A microcontroller can be programmed to perform the binary to decimal conversion and then use a look-up chart to perform the segment conversion. However, if pins are limited on the microcontroller, it can be advantageous to use 7448 ICs in a multiplexing fashion to drive the 7-segment displays. In this method, the microcontroller would send BCD (binary coded decimal) on 4 output pins to the 7448 chips. A line selector (an additional output line on the microcontroller) could select which 7448 chip to target and cycle through the set of displays to produce the overall numeric output.

14 Days Warranty

This item is covered with a standard warranty of 14 days from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Micro Ohm customers from any kind of manufacturing defects. Replacement will be done against manufacturing defects.

What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

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