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Texas Instruments MM5453VX
- Part No.:
- MM5453VX
- Manufacturer:
- Texas Instruments
- Category:
- Display Drivers
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
MM5453VX.pdf
- Description:
- IC DRVR 7 SEG 4 1/2 DIGIT 44PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,685
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Product details
Overview
MM5453VX from Texas Instruments is a 44-pin PLCC monolithic CMOS LCD display driver IC designed for direct segment control in 4½-digit 7-segment, alphanumeric, and bar-graph displays. It provides 33 outputs (32 segment + 1 backplane), operates from 3V to 10V, supports serial data input without load signal, and delivers ±500 µA backplane sink/source current at 3V. It is used in digital voltmeters, thermometers, and industrial panel meters requiring low-power, non-multiplexed LCD drive.
For engineers reviewing the MM5453VX datasheet, MM5453VX pinout, MM5453VX application, or MM5453VX equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated package and pin mapping, confirmed alternatives with functional distinctions, and supply-ready availability details - all specific to the MM5453VX/NOPB ordering variant.
Technical Context
The MM5453VX implements a static master-slave shift register architecture with synchronous LOAD/RESET generation on the 36th clock edge, enabling latch-based non-multiplexed segment drive. Its serial interface uses only DATA and CLOCK lines - no external LOAD signal required - and accepts a start bit followed by 32 data bits to configure all 32 segment outputs.
Unlike the MM5452, the MM5453VX exposes the 33rd output instead of a DATA ENABLE pin, supporting flexible backplane configuration or additional segment control. It supports both internal RC oscillator (75 Hz typical backplane frequency) and external clock inputs with 40–60% duty cycle tolerance, enabling synchronization with AC line or DVM integration timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3V to 10V - enables direct operation from common logic rails (3.3V, 5V) or battery-backed industrial supplies without regulation. |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade embedded instrumentation and panel-mounted metering applications. |
| Backplane Output Current | ±500 µA at VDD = 3V - sufficient to drive high-capacitance LCD backplanes (up to 8750 pF) without external buffering. |
| Segment Output Current | ±40 µA at VDD = 3V - matches standard low-power segment requirements for reflective STN and TN LCDs. |
| Max Clock Frequency | 1.0 MHz at VDD = 10V - allows full 36-bit frame load in ≤36 µs, supporting fast display updates in dynamic readouts. |
| Input Logic Thresholds | VIL ≤ 0.8V / VIH ≥ 8.0V at VDD = 10V - ensures robust TTL/CMOS compatibility across full supply range. |
| Backplane Frequency | 75 Hz (typ.) with ROSC_IN = 50 kΩ, COSC_IN = 0.01 µF - falls within optimal 30–150 Hz LCD drive range to prevent image retention. |
Pinout & Package
MM5453VX is housed in a 44-lead Plastic Leaded Chip Carrier (PLCC) package per JEDEC MS-018, designated FN0044A, with 4.57 mm max height and gull-wing leads. Pin 1 is marked by an optional corner chamfer or laser etch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Positive Supply | Primary power rail (3–10 V); decoupling capacitor required near pin for stable LCD bias generation. |
| VSS | Ground Reference | Common return for logic, segment, and backplane circuits; must be low-impedance to minimize crosstalk. |
| DATA | Serial Data Input | CMOS/TTL-compatible input accepting start bit + 32 segment bits; no external pull-up needed. |
| CLOCK | Serial Clock Input | Edge-triggered input controlling shift register advancement; rise/fall time ≤300 ns required. |
| ROSC_IN | Oscillator Timing Input | Connects to external RC network (e.g., 50 kΩ + 0.01 µF) to set internal backplane frequency (~75 Hz). |
| BP_OUT | Backplane Output | Active backplane driver capable of ±500 µA; drives common electrode of multiplexed LCD segments. |
| SEG0–SEG31 | Segment Outputs | 32 individually controllable CMOS outputs; each sinks or sources up to ±40 µA for segment activation. |
| OUT33 | 33rd Output Terminal | Differentiates MM5453VX from MM5452; usable as extra segment driver or alternate backplane path. |
Key Features
| Feature | Design Value |
|---|---|
| No Load Signal Required | Eliminates dedicated LOAD line by embedding synchronous latch control in 36th clock edge - reduces PCB routing and controller GPIO count. |
| 33-Output Configuration | Provides dedicated BP_OUT plus 32 segment drivers and a 33rd configurable output - supports dual-backplane designs or extended alphanumeric layouts. |
| Wide Supply Range (3–10 V) | Enables direct interface with unregulated battery packs (e.g., 3×AA), 5 V logic systems, and 9 V industrial rails without level-shifting or regulators. |
| Cascadable Serial Interface | Multiple MM5453VX devices can be daisy-chained using single DATA/CLOCK bus - scales to >32 segments without added controller overhead. |
| External Clock Synchronization | Accepts externally generated clock (e.g., 50/60 Hz line sync or DVM integration pulse) to eliminate display flicker and beat interference in precision instruments. |
Applications
| Digital Panel Meter | Industrial Temperature Controller |
|---|---|
Use Scenario: Front-panel 4½-digit voltage/current measurement with local LCD readout and analog input conditioning. IC Role / Device Role / Timing Role: Direct segment driver receiving serial BCD or custom segment data from microcontroller; generates synchronized backplane waveform. Use Value: Eliminates need for character generator or multiplexing logic; supports stable, low-noise display under varying supply conditions (3–10 V). |
Use Scenario: DIN-rail mounted temperature controller with 4-digit LCD showing setpoint, process value, and status indicators. IC Role / Device Role / Timing Role: Segment-level LCD driver interfaced to 8-bit MCU via two-wire serial link; handles bar-graph-style status LEDs via SEGx outputs. Use Value: Reduces firmware complexity by offloading segment mapping; ±500 µA backplane drive ensures visibility across wide ambient temperature range (−40°C to +85°C). |
| Digital Multimeter (DMM) | Remote Sensor Display Unit |
Use Scenario: Handheld DMM with auto-ranging, AC/DC measurement, and 4½-digit LCD display powered by 9 V battery. IC Role / Device Role / Timing Role: Low-quiescent-current LCD driver (10 µA @ 5 V) managing segment and backplane timing; supports external 50 Hz clock sync to reject mains noise. Use Value: Extends battery life while maintaining flicker-free display; internal oscillator eliminates need for crystal or external timing components. |
Use Scenario: Four-wire remote display node connected to sensor hub via twisted-pair, showing analog-derived bar graph and numeric values. IC Role / Device Role / Timing Role: Serial-to-LCD translator converting staircase-comparator output bits into segment states; uses OUT33 for auxiliary indicator control. Use Value: Minimizes interconnect wires (only DATA, CLOCK, VDD, VSS required); supports logarithmic or non-linear scaling via custom segment mapping. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LCD driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MM5453N/NOPB | 40-pin PDIP package; identical electrical specs and pin function mapping except for physical layout and thermal performance. | Preferred for through-hole prototyping or legacy board reuse; lacks PLCC's space efficiency and thermal dissipation capability. | Select MM5453N/NOPB only when PDIP footprint and hand-soldering are required; MM5453VX offers superior density and reflow compatibility. |
| ICM7211AMIW | 40-pin SOIC; integrates built-in BCD-to-7-segment decoder and multiplex control; requires external backplane driver; lower segment count (4 digits only). | Suitable for fixed-format numeric-only displays; not compatible with alphanumeric or bar-graph configurations supported by MM5453VX. | Choose ICM7211AMIW for cost-sensitive, simple numeric readouts where decoding logic is desired; MM5453VX retains full segment-level control for custom layouts. |
Compared with MM5453N/NOPB, MM5453VX provides higher-density PLCC packaging and better thermal performance for volume production; versus ICM7211AMIW, it trades integrated decoding for full 33-output flexibility and true alphanumeric/bar-graph support - critical for non-standard or multi-function displays.
Availability
MM5453VX is available at Aetrix Electronics and suitable for digital multimeters, industrial temperature controllers, panel meters, and remote sensor displays requiring stable component supply, long-lifecycle support, and RoHS-compliant PLCC packaging.
Supply support for MM5453VX 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 specializing in analog, embedded processing, and logic technologies, with decades of leadership in precision analog interface ICs.
The MM5453VX belongs to TI's legacy LCD driver product line, engineered specifically for low-power, high-reliability direct-drive applications in industrial instrumentation, test equipment, and embedded readouts.
FAQ
What is the primary function of the MM5453VX in an LCD system?
The MM5453VX serves as a serial-input, non-multiplexed LCD segment driver that directly controls up to 32 segments and one backplane (plus a 33rd configurable output). It receives 32-bit segment data via DATA and CLOCK lines, latches it on the 36th clock edge, and drives LCD electrodes with precise timing - eliminating need for external character generators or multiplexing logic. The MM5453VX is optimized for 4½-digit numeric, alphanumeric, and bar-graph displays in industrial and test equipment.
Does the MM5453VX require an external load signal to update the display?
No, the MM5453VX does not require an external load signal. It generates an internal synchronous LOAD signal on the 36th clock edge after receiving a start bit and 32 data bits. This autonomous latching mechanism simplifies controller interface - only two wires (DATA and CLOCK) are needed for full 32-segment updates. The MM5453VX behavior is explicitly defined in its functional description and timing diagram (Figure 6), confirming no external LOAD pin or signal is used.
How does the MM5453VX differ from the MM5452VX in pin functionality?
The MM5453VX exposes the 33rd output (OUT33) as a general-purpose segment or auxiliary driver, whereas the MM5452VX dedicates that terminal to DATA ENABLE functionality. Both share identical 44-pin PLCC packaging (FN0044A), 32-segment outputs, and backplane drive capability. The MM5453VX is selected when full 33-output control is needed - for example, driving dual backplanes or adding status indicators - while the MM5452VX is chosen when explicit data enable timing is required for cascaded or synchronized systems.
Can the MM5453VX drive high-capacitance LCD panels?
Yes, the MM5453VX supports backplane loads up to 8750 pF and segment loads up to 250 pF, as verified in its Electrical Characteristics table. Its ±500 µA backplane sink/source current at 3V ensures reliable drive of large-area or multi-layer LCDs common in industrial panel meters. The device also specifies output offset voltage limits (±50 mV) under those load conditions, guaranteeing stable contrast and minimal ghosting - critical for high-reliability instrumentation displays.
Is the MM5453VX RoHS compliant and suitable for modern reflow assembly?
Yes, the MM5453VX/NOPB is RoHS compliant (Green: RoHS & no Sb/Br) with CU SN lead finish and JEDEC MSL Level-3 rating (245°C peak, 168-hour floor life). Its PLCC package (FN0044A) is qualified for standard lead-free reflow profiles, and TI's packaging addendum confirms active status with 500-unit reel packaging - making it fully suitable for automated SMT production and long-term industrial deployment.
MM5453VX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- COPS™
- Package/Case:
- 44-LCC (J-Lead)
- Packaging:
- Tape & Reel (TR)
- 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:
- Surface Mount
- Supplier Device Package:
- 44-PLCC (16.58x16.58)
MM5453VX FAQ
1.How can I place an order for MM5453VX through Aetrix?
Please submit a Request for Quotation (RFQ) for MM5453VX 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 MM5453VX reliable?
The price and inventory of MM5453VX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM5453VX is usually 5 days.
3.What payment methods are accepted for MM5453VX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM5453VX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM5453VX?
MM5453VX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM5453VX 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 MM5453VX?
For technical support, including MM5453VX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM5453VX requirements.
6.How does Aetrix verify that MM5453VX is sourced from the original manufacturer or authorized distributors?
All MM5453VX 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 MM5453VX meets industry standards.
7.What is the process for return or replacement of MM5453VX?
All MM5453VX units undergo pre-shipment inspection (PSI). If there is an issue with MM5453VX, 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 MM5453VX part is unused and in its original packaging.
Return procedure for MM5453VX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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