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Texas Instruments MM5483N
- Part No.:
- MM5483N
- Manufacturer:
- Texas Instruments
- Category:
- Display Drivers
- Package:
- 40-DIP (0.600", 15.24mm)
- Datasheet:
-
MM5483N.pdf
- Description:
- IC DRVR 7 SEG 4 1/2 DIGIT 40DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,300
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Product details
Overview
MM5483N from Texas Instruments is a monolithic CMOS LCD display driver in a 40-pin PDIP package, capable of driving up to 31 segments with serial data input/output, TTL compatibility, and wide 3.0–10 V supply operation. It supports 4½-digit 7-segment, alphanumeric, and bar graph displays in digital clocks, voltmeters, and industrial control indicators.
For engineers reviewing the MM5483N datasheet, MM5483N pinout, MM5483N application, or MM5483N equivalent, key selection considerations include its 31-segment drive capability, cascading support for expanded display count, low IDD (2.5 µA typical at 3 V), 500 kHz max clock frequency, and dual-mode (2-wire/3-wire) interface flexibility.
Technical Context
The MM5483N integrates a serial-in shift register, 31-bit latch array, and segment output buffers optimized for multiplexed LCD bias generation. Its asynchronous load input enables immediate data transfer from shift register to outputs, supporting both continuous and burst-update display modes.
It operates across −40°C to +85°C with no external oscillator required-internal timing allows direct connection to a 32 Hz BP_In signal for backplane synchronization. Output drive strength is specified for sink/source currents up to 320 µA on BP_Out and 20 µA on segment outputs under defined voltage conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.0 V to 10 V - Enables direct interface with 3.3 V or 5 V microcontrollers without level-shifting. |
| Segment Outputs | 31 outputs - Drives full 4½-digit 7-segment display plus decimal points and annunciators. |
| Max Clock Frequency | 500 kHz - Supports rapid display updates with minimal visible flicker in 2-wire mode. |
| Avg Supply Current | 2.5 µA typical at 3 V - Enables ultra-low-power battery operation in portable instrumentation. |
| Operating Temp | −40°C to +85°C - Qualified for industrial and outdoor environmental deployment. |
| Input Logic Levels | TTL-compatible at 5 V (0.9 V low / 2.4 V high); functional down to 3 V (0.4 V low / 2.0 V high). |
| Backplane Drive | BP_Out sink/source: 320 µA - Provides sufficient current for stable AC biasing of common LCD backplane. |
Pinout & Package
MM5483N is packaged in a 40-pin plastic dual in-line package (PDIP), package drawing NFJ0040A, with 0.600-inch body width and 0.100-inch lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Positive power supply | Accepts 3.0–10 V DC; powers internal logic and output drivers. |
| VSS | Ground reference | Common return for all digital and analog circuitry; must be low-impedance. |
| Data In | Serial data input | Accepts MSB-first bitstream synchronized to Clock In; TTL/CMOS compatible. |
| Load | Asynchronous latch enable | High-active signal transfers shift register contents to output latches immediately. |
| Clock In | Serial clock input | Drives internal shift register on rising edge; 500 kHz max frequency. |
| Data Out | Serial data output | Pass-through of shifted-out data for daisy-chaining multiple MM5483N devices. |
| BP_In | Backplane timing input | Accepts 32 Hz square wave to synchronize LCD AC bias waveform generation. |
| BP_Out | Backplane drive output | Provides complementary AC waveform for LCD common electrode; 320 µA drive capability. |
| SEG1–SEG31 | Segment drive outputs | CMOS outputs configured as active-low drivers for LCD segment electrodes. |
Key Features
| Feature | Design Value |
|---|---|
| 3-Wire or 2-Wire Interface | Flexible control: Load pin enables synchronous update (3-wire), or tie Load to VDD for simplified 2-wire burst loading. |
| Cascadable Architecture | Single Data Out pin allows daisy-chaining multiple MM5483N units to drive >31 segments without additional controller I/O. |
| Alphanumeric + Bar Graph Support | 31 independent outputs permit mixed use-e.g., 28 segments for digits + 3 for bar indicators or status LEDs. |
| Low-Power Static Operation | IDD ≤2.5 µA at 3 V ensures multi-year battery life in handheld meters and remote displays. |
| Integrated Backplane Timing | BP_In input eliminates need for external oscillator or microcontroller-generated 32 Hz signal in basic implementations. |
Applications
| Digital Clock Display | Voltmeter Readout |
|---|---|
Use Scenario: Driving 4½-digit LCD in wall-mounted or benchtop digital clocks with battery backup. IC Role / Device Role / Timing Role: Primary segment driver with integrated 32 Hz backplane timing; receives BCD or ASCII-coded digit data via serial interface. Use Value: Eliminates external oscillator and reduces MCU GPIO count by using 2-wire interface with Load tied to VDD. | Use Scenario: Displaying measured voltage values in handheld multimeters with auto-ranging and hold functions. IC Role / Device Role / Timing Role: Segment driver handling dynamic digit updates and annunciator control (e.g., mV/V/kV, AC/DC, REL). Use Value: 31 outputs support full digit set plus polarity, range, and function indicators-no external decoding logic required. |
| Industrial Control Panel | Remote Temperature Monitor |
Use Scenario: Local operator interface on PLC-mounted panels showing process values, setpoints, and alarm status. IC Role / Device Role / Timing Role: Robust LCD driver operating across −40°C to +85°C ambient; interfaces to industrial MCU over noise-immune serial link. Use Value: Wide 3–10 V supply range accommodates unregulated 5 V or 9 V rail; TTL compatibility avoids level translators in legacy designs. | Use Scenario: Battery-powered outdoor sensor node displaying temperature readings with bar-graph trend indicator. IC Role / Device Role / Timing Role: Low-power segment + bar-graph driver; uses BP_In for precise AC bias to prevent LCD image retention. Use Value: 2.5 µA typical IDD at 3 V extends AA battery life beyond 5 years in sleep-then-update operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LCD display driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MM5483V/NOPB | PLCC-44 package (FN0044A), RoHS-compliant, active status; identical electrical specs and pinout mapping per TI documentation. | Requires PCB redesign for surface-mount assembly; better thermal performance and board density. | Select when new designs require RoHS compliance, higher reliability, or automated SMT production. |
| ICM7211AMIW | 40-pin DIP, 4-digit BCD-to-7-segment decoder/driver; no serial interface, no cascading, no bar-graph support. | Limited to fixed 4-digit numeric display; requires parallel MCU interface and external backplane oscillator. | Choose only for simple, cost-sensitive 4-digit displays where serial interface and flexibility are unnecessary. |
Compared with MM5483V/NOPB, MM5483N offers identical functionality in through-hole PDIP for legacy repair or prototyping, while ICM7211AMIW lacks serial control and segment scalability-making MM5483N the sole choice for expandable, low-power, alphanumeric LCD systems.
Availability
MM5483N is available at Aetrix Electronics and suitable for digital clocks, industrial control indicators, and portable instrumentation requiring stable component supply despite its obsolete status per TI's packaging addendum.
Supply support for MM5483N includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The MM5483N belongs to TI's legacy CMOS LCD driver product line, designed specifically for low-power, serially controlled multiplexed LCD applications in instrumentation and consumer displays.
FAQ
What is the primary function of the MM5483N?
The MM5483N is a monolithic CMOS LCD display driver that serially accepts digit and segment data to drive up to 31 LCD segments. It features built-in latching, cascading capability via Data Out, and dedicated backplane timing support through BP_In/BP_Out. Its design targets low-power, microcontroller-connected LCD readouts in digital clocks, meters, and control panels.
Does the MM5483N require an external oscillator?
No-the MM5483N does not require an external oscillator for basic operation. It accepts a 32 Hz square wave on BP_In to generate proper AC bias for the LCD backplane. For segment timing, it relies solely on the externally supplied Clock In signal; no internal oscillator is present or needed.
Can multiple MM5483N chips be connected together?
Yes-MM5483N supports daisy-chain cascading. The Data Out pin passes shifted-out bits to the Data In of the next MM5483N, enabling expansion beyond 31 segments. All devices share the same Clock In and Load signals, allowing synchronized updates across the chain with no additional MCU I/O overhead.
What is the maximum supply voltage rating for the MM5483N?
The MM5483N has an absolute maximum supply voltage of VSS +10 V, with recommended operating range from 3.0 V to 10 V DC. Electrical characteristics are fully specified across this range, including input logic thresholds, output drive, and supply current-enabling direct use with 5 V or 9 V unregulated rails common in industrial equipment.
Is the MM5483N still in active production?
No-TI lists MM5483N/NOPB as OBSOLETE in its packaging addendum. However, Aetrix Electronics maintains verified inventory with full traceability and supports long-term supply for legacy system maintenance, repair, and industrial replacement programs.
MM5483N Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- COPS™
- Package/Case:
- 40-DIP (0.600", 15.24mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Display Type:
- LCD
- Configuration:
- 7 Segment + DP, Alphanumeric and Bar Graph
- Interface:
- Serial
- Digits or Characters:
- 4.5 Digits
- Current - Supply:
- -
- Voltage - Supply:
- 3V ~ 10V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 40-DIP
MM5483N FAQ
1.How can I place an order for MM5483N through Aetrix?
Please submit a Request for Quotation (RFQ) for MM5483N on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MM5483N reliable?
The price and inventory of MM5483N are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM5483N is usually 5 days.
3.What payment methods are accepted for MM5483N?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM5483N transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM5483N?
MM5483N orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM5483N order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MM5483N?
For technical support, including MM5483N datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM5483N requirements.
6.How does Aetrix verify that MM5483N is sourced from the original manufacturer or authorized distributors?
All MM5483N products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MM5483N meets industry standards.
7.What is the process for return or replacement of MM5483N?
All MM5483N units undergo pre-shipment inspection (PSI). If there is an issue with MM5483N, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MM5483N part is unused and in its original packaging.
Return procedure for MM5483N:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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