Dot/Bar Display Driver
Manufacturer : | TI |
---|---|
Package/Case : | PLCC-20 |
Product Categories : | Display Driver |
Datasheet: | LM3914V Datasheet (PDF) |
RoHs Status: | Lead free/RoHS Compliant |
In-stock: | 0 |
Quantity
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LM3914V Product Details
· 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 30 mA
· 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 LM3914V is a monolithic integrated circuit that senses analog voltage levels and drives 10 LEDs, providing a linear analog display.A single pinchanges the display from a moving dot to a bar graph. Current drive to the LEDs is regulated andprogrammable, 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 andaccurate 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 i%, even over a wide temperature range.
Versatility was designed into the LM3914V so that controller, visual alarm, and expanded scale functions are easily added on to the display system. The circuit can drive LEDs of many colors, 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 LM3914V is very easy to apply as an analog meter circuit.A 1.2V full-scale meter requires only 1resistor and a single 3V to 15V supply in addition to the 10 display LEDs. If the 1 resistor is a pot, itbecomes the LED brightness control. The simplified block diagram illustrates this extremely simple external circuitry.
When in the dot mode, there is a small amount ofoverlap or "fade"(about 1 mV) between segments.This assures that at no time will al 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 LM3914V can also act as a programmer, or sequencer.
(Picture: Pinout)
Technical Parameters
- Maximum Supply Current
- 9200 uA
- Maximum Operating Temperature
- + 70 C
- Mounting Style
- SMD/SMT
- Package / Case
- PLCC-20
- Minimum Operating Temperature
- 0 C
- Packaging
- Tube
- Factory Pack Quantity
- 40
LM3914V Equivalent Parts
For the LM3914V component, you may consider these replacement and alternative parts.
Models | Manufacturer | Package/Case | Description |
---|---|---|---|
LM3916N-1 | TI | DIP-18 | LED BAR GRAPH DRIVER, 3916, Device Topology:Linear, No. of Outputs:10Outputs, Output Current:30mA, Output Voltage:17V, Input Voltage Min:3V, Input Voltage Max:25V, Switching |
LM3914N-1 | TI/NS | MDIP-18 | LED Lighting Drivers Dot/Bar Display Dvr |
LM3915N-1 | TI/NS | DIP-18 | IC DRIVER DOT BAR DISPLAY |
LM3914V Related Products
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1.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.
2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.
FAQ:
- Q: How does Jotrin guarantee that LM3914V is the original manufacturer or agent of TI?
- We have a professional business development department to strictly test and verify the qualifications of TI original manufacturers and agents. All TI suppliers must pass the qualification review before they can publish their LM3914V devices; we pay more attention to the channels and quality of LM3914V products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
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- Q: Are the TI's LM3914V price and stock displayed on the platform accurate?
- The TI's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for LM3914V, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
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We can provide order placement service. You only need to log in, click "My Orders" to enter the transaction management, and you will see the "Order Details" interface. After checking it, select all and click "Place Order". In addition, you can enjoy coupons or other selected gifts when placing orders online. - Q: What forms of payment can I use in Jotrin?
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Note: It may take up to 24 hours before carriers will display tracking information. In normal conditions, Express delivery needs 3-5 days, Registered Mail needs 25-60 days. - Q: What is the process for returns or replacement of LM3914V?
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All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment.
If there is something wrong with the LM3914V we delivered, we will accept the replacement or return of the LM3914V only when all of the below conditions are fulfilled:
(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of LM3914V.
(3)The LM3914V is unused and only in the original unpacked packaging.
Two processes to return the products:
(1)Inform us within 90 days
(2)Obtain Requesting Return Authorizations
More details about return electronic components please see our Return & Change Policy. - Q: How to contact us and get support, such as LM3914V datasheet pdf, LM3914 pin diagram?
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