LM3914N-1/NOPB
Category: PMIC - Display Drivers
Description: LM3914 Dot/Bar Display Driver
Package: MDIP
No of Pins: 18
Qty per Container: 20/Rail
Price range ($)
0.48507 1.28297
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LM3914N-1/NOPB
LM3914N-1/NOPB has several brands around the world that may have alternate names for LM3914N-1/NOPB due to regional differences or acquisition. LM3914N-1/NOPB may also be known as the following names:
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Certified preowned
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Official
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2
Description
LM3914N-1/NOPB
Stock:9999 |
National Semiconductor |
LM3914 Dot/Bar Display Driver; Package: MDIP; No of Pins: 18; Qty per Container: 20/Rail |
≥1: AU $1.24020 AU $1.11618 ≥5: AU $0.93016 AU $0.83715 ≥10: AU $0.65111 AU $0.58600 ≥20: AU $0.62010 AU $0.55809 ≥50: AU $0.55810 AU $0.50229 ≥100: AU $0.54259 AU $0.48833 ≥200: AU $0.52709 AU $0.47438 ≥500: AU $0.51158 AU $0.46042 ≥1000: AU $0.49607 AU $0.44647
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Inquiry
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LM3914N-1/NOPB
Stock:10000 |
Texas Instruments 18 |
LM3914 Dot/Bar Display Driver |
≥1: AU $1.21268 AU $1.09141 ≥5: AU $0.90951 AU $0.81856 ≥10: AU $0.63666 AU $0.57299 ≥20: AU $0.60634 AU $0.54571 ≥50: AU $0.54571 AU $0.49114 ≥100: AU $0.53054 AU $0.47749 ≥200: AU $0.51539 AU $0.46385 ≥500: AU $0.50024 AU $0.45021 ≥1000: AU $0.48507 AU $0.43656
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Inquiry
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LM3914N-1/NOPB
Stock:37995 |
Ti(德州仪器) |
LM3914 Dot/Bar Display Driver |
≥1: AU $1.28297 AU $1.15467 ≥5: AU $0.96223 AU $0.86600 ≥10: AU $0.67356 AU $0.60620 ≥20: AU $0.64148 AU $0.57734 ≥50: AU $0.57734 AU $0.51960 ≥100: AU $0.56130 AU $0.50517 ≥200: AU $0.54526 AU $0.49074 ≥500: AU $0.52922 AU $0.47630 ≥1000: AU $0.51319 AU $0.46187
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Inquiry
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FEATURES
● Drives LEDs, LCDs or Vacuum Fluorescents
● Bar or Dot Display Mode Externally Selectable by User
● Expandable to Displays of 100 steps
● Internal Voltage Reference from 1.2V to 12V
● Operates with Single Supply of Less than 3V.
● Inputs Operate Down to Ground
● Output Current Programmable from 2 mA to 30mA
● No Multiplex Switching or Interaction Between outputs
● Input Withstands ±35V without Damage or False outputs
● LED Driver outputs are Current Regulated, open-collectors
● Outputs can Interface with TTL or CMOS Logic
● The Internal 10-step Divider is Floating and can be Referenced to a Wide Range of Voltages
DESCRIPTION
The LM3914 is a monolithic integrated circuit that senses analog voltage levels and drives 10 LEDs, providing a linear analog display. A single pin changes the display from a moving dot to a bar graph. Current drive to the LEDs is regulated and programmable, eliminating the need for resistors.This feature is one that allows operation of the whole system from less than 3V.
The circuit contains its own adjustable reference and accurate 10-step voltage divider. The low-bias-current input buffer accepts signals down to ground, or V-, yet needs no protection against inputs of 35V above or below ground. The buffer drives 10 individual comparators referenced to the precision divider. Indication non-linearity can thus be held typically to 1/2%, even over a wide temperature range.
Versatility was designed into the LM3914 so that controller, visual alarm, and expanded scale functions are easily added on to the disp1ay system. The circuit can drive LEDs of many co1ors, or low-current Incandescent lamps. Many LM3914s can be “chained" to form displays of 20 to over 100 segments. Both ends of the voltage divider are externally available so that 2 drivers can be made into a zero-center meter.
The LM3914 is very easy to apply as an analog meter circuit.A 1.2v full-sca1e meter requires only 1resistor and a single 3V to 15V supply in addition to the 10 disp1ay LEDs. If the 1 resistor is a pot, it becomes the LED brightness control. The simplified block diagram illustrates this extremely simple external circuitry.
When in the dot mode, there is a small amount of over1ap or “fade” (about 1mV) between segments. This assures that at no time will all LEDs be“OFF”, and thus any ambiguous display is avoided. Various novel displays are possible.
Much of the display flexibility derives from the fact that all outputs are individual, DC regulated currents. Various effects can be achieved by modulating these currents. The individual outputs can drive a transistor as well as a LED at the same time, so controller functions including “staging” control can be performed. The LM3914 can also act as a programmer, or sequencer.
The LM3914 is rated for operation from 0℃ to +70℃. The LM3914N-1 is available in an 18-lead PDIP (NFK) package.
The following typical application illustrates adjusting of the reference to a desired value, and proper
Grounding for accurate operation, and avoiding oscillations.
E-catalog
Freight calculation
Express:(FEDEX, UPS, DHL, TNT)Free shipping on first 0.5kg for orders over AU $295.12,Overweight will be charged separately
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