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LM3914 driving an LED bargraph display LM3915 IC in DIP-18 package. The LM3914 is an integrated circuit (IC), designed by National Semiconductor in the late 1970s, used to operate displays that visually show the magnitude of an analog signal. [1] It can drive up to 10 LEDs, LCDs, or vacuum fluorescent displays on its outputs. The linear scaling ...
line driver/memory driver circuits - MOS memory interface, damping output resistor 16 SN74S436: 74x437 1 line driver/memory driver circuits - MOS memory interface 16 SN74S437: 74x438 1 system controller for Intel 8080A (equivalent to Intel 8238) 28 SN74S438: 74x440 4 quad tridirectional bus transceiver, non-inverting outputs open-collector 20 ...
A Charlieplexed digital clock which controls 90 LEDs with 10 pins of a PIC 16C54 microcontroller.. Charlieplexing (also known as tristate multiplexing, reduced pin-count LED multiplexing, complementary LED drive and crossplexing) is a technique for accessing a large number of LEDs, switches, micro-capacitors or other I/O entities, using relatively few tri-state logic wires from a microcontroller.
Simple LED (Light Emitting Diode) circuit diagram. In electronics, an LED circuit or LED driver is an electrical circuit used to power a light-emitting diode (LED). The circuit must provide sufficient current to light the LED at the required brightness, but must limit the current to prevent damaging the LED.
[6] [page needed] The headings in the following table are: V cc – power-supply voltage; t pd – maximum gate delay; I OL – maximum output current at low level; I OH – maximum output current at high level; t pd, I OL, and I OH apply to most gates in a given family. Driver or buffer gates have higher output currents.
Temperature compensated Zener reference diode, 6.9 V breakdown voltage [52] LM136 LM236 LM336 2.5 V or 5 V Zener reference diode with temperature coefficient trimmer [53] LM368 Yes 2.5 V precision voltage reference [54] LM169 LM369 LM199 Yes 2.5 V temperature compensated precision voltage reference [55] LM185 LM285 LM385
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