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Texas Instruments MM5453VX/NOPB
- Part No.:
- MM5453VX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Display Drivers
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
MM5453VX/NOPB.pdf
- Description:
- IC DRVR 7 SEG 4 1/2 DIGIT 44PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,111
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Product details
Overview
MM5453VX/NOPB from Texas Instruments is a 44-pin PLCC LCD display driver IC designed for direct segment control in 4½-digit 7-segment and alphanumeric LCD applications. It provides 33 outputs (32 segment + 1 backplane), operates from 3V to 10V, supports serial data input without load signal, and delivers ±50 mV output offset voltage with up to 500 µA backplane sink/source capability.
For engineers reviewing the MM5453VX/NOPB datasheet, MM5453VX/NOPB pinout, MM5453VX/NOPB application, or MM5453VX/NOPB equivalent, key selection criteria include its 33-output configuration (vs. MM5452's 32 outputs + DATA ENABLE), PLCC-44 package compatibility, wide VDD range, and support for cascaded operation in multi-digit displays.
Technical Context
The MM5453VX/NOPB implements a static master-slave shift register architecture accepting serial data with a leading "1" start bit followed by 32 data bits, latching all 32 bits on the 36th clock edge. Unlike the MM5452, it exposes the 33rd output instead of a DATA ENABLE signal, enabling full 33-pin segment/backplane control.
It supports both internal RC oscillator (75 Hz typical backplane frequency with 50 kΩ/0.01 µF) and external 50% duty-cycle clock inputs, allowing synchronization with AC line or DVM integration time to suppress display interference. Backplane outputs are paralleled internally for higher drive strength.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Range | 3V to 10V - enables direct interface with 3.3V, 5V, and 9V systems without level-shifting. |
| Outputs | 33 terminals - 32 segment drivers + 1 dedicated backplane output, no DATA ENABLE pin. |
| Backplane Drive | ±500 µA at 3V - sufficient to drive high-capacitance LCD backplanes (8750 pF) with low offset. |
| Input Logic Levels | VIL ≤ 0.8V, VIH ≥ 2.0V (at VDD = 5V) - ensures reliable TTL/CMOS compatibility across supply voltages. |
| Clock Frequency | Up to 1 MHz at VDD = 10V - allows fast update rates for dynamic displays without timing bottlenecks. |
| Operating Temp | −40°C to +85°C - qualified for industrial-grade embedded instrumentation and remote displays. |
Pinout & Package
MM5453VX/NOPB uses a 44-pin Plastic Leaded Chip Carrier (PLCC) package per TI package code FN0044A, with 4.57 mm maximum height, JEDEC MS-018 compliant footprint, and pin 1 identified by corner notch or optional marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Segment Output S1 | Drives first segment of LCD; sinks current during active display phase. |
| Pin 18 | Segment Output S18 | Corresponds to bit 1 of serial data stream; used for digit/segment mapping alignment. |
| Pin 20 | Segment Output S20 | Maps to bit 3 of serial data; critical for correct 4½-digit display decoding. |
| Pin 44 | Backplane Output BP_OUT | Dedicated 33rd output; provides synchronized AC drive signal to LCD common electrode. |
| VDD (Pins 22, 23) | Power Supply | Dual VDD pins reduce IR drop and improve noise immunity in high-density layouts. |
| GND (Pins 11, 12) | Ground Reference | Dual GND pins ensure stable reference for analog LCD biasing and digital logic. |
Key Features
| Feature | Design Value |
|---|---|
| No Load Signal Required | Serial data with leading "1" start bit eliminates need for separate LOAD control line, reducing MCU GPIO count. |
| Cascaded Operation | Multiple MM5453VX/NOPB devices can be daisy-chained via serial output to drive >33 segments without additional controllers. |
| Alphanumeric Capability | All 32 segment outputs are individually controllable, supporting custom glyphs, bar graphs, and non-standard character sets. |
| External Clock Sync | Accepts externally generated 50% duty-cycle clock to align LCD drive with AC mains or measurement integration windows, eliminating flicker. |
Applications
| Digital Voltmeter Display | Industrial Control Indicator |
|---|---|
Use Scenario: Driving 4½-digit LCD in handheld DVMs with auto-ranging and hold functions. 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 external character generator or multiplexing controller; ±50 mV offset ensures stable contrast across temperature. | Use Scenario: Panel-mounted status display in PLC I/O modules showing sensor values and fault codes. IC Role / Device Role / Timing Role: Standalone LCD driver interfaced to 8-bit parallel bus via shift register; operates over full industrial temperature range. Use Value: 3V–10V supply range accommodates varied field power rails; 33 outputs support dual-line or extended bar-graph readouts. |
| Digital Thermometer | Remote Display System |
Use Scenario: Battery-powered indoor/outdoor thermometer with LCD and low-power sleep mode. IC Role / Device Role / Timing Role: Low-quiescent-current LCD driver (10 µA at 5V) activated only during display updates. Use Value: Sub-µA standby current extends battery life; internal oscillator eliminates external timing components. | Use Scenario: Four-wire remote display connected via twisted pair to central controller in HVAC or energy metering. IC Role / Device Role / Timing Role: Serial-to-LCD translator minimizing wire count; accepts clock/data from microcontroller over distance. Use Value: Noise-immune serial interface reduces EMI susceptibility; cascading supports multi-display networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LCD driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MM5452VX/NOPB | 32 segment outputs + DATA ENABLE pin instead of 33rd segment output; identical PLCC-44 package and electrical specs. | Requires external logic to generate LOAD if DATA ENABLE not used; less flexible for backplane-only expansion. | Select MM5452VX/NOPB when system design reserves one GPIO for DATA ENABLE control or uses simpler 32-segment displays. |
| ICM7211AMIPI | 40-pin DIP; built-in BCD-to-7-segment decoder; fixed 4-digit numeric format; no alphanumeric capability. | Limited to standard numeric displays; no serial interface - requires parallel 8-bit bus and digit select lines. | Choose ICM7211AMIPI for cost-sensitive, fixed-format 4-digit applications where microcontroller GPIO is abundant and serial interface is unnecessary. |
Compared with MM5452VX/NOPB, the MM5453VX/NOPB offers direct 33rd output access for enhanced backplane control or extra segment flexibility; versus ICM7211AMIPI, it trades built-in decoding for full programmable segment mapping and lower interconnect count via serial interface.
Availability
MM5453VX/NOPB is available at Aetrix Electronics and suitable for digital voltmeters, industrial control indicators, digital thermometers, remote displays, and instrumentation readouts requiring stable component supply and long-term obsolescence management.
Supply support for MM5453VX/NOPB 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 founded in 1930, specializing in analog, embedded processing, and logic ICs with broad industrial, automotive, and consumer applications.
The MM5453VX/NOPB belongs to TI's legacy LCD driver product line, engineered for low-power, high-reliability direct-drive of multiplexed LCDs in instrumentation and portable measurement equipment.
FAQ
What is the key functional difference between MM5453VX/NOPB and MM5452VX/NOPB?
The MM5453VX/NOPB provides 33 dedicated output terminals - 32 segment drivers plus one dedicated backplane output - whereas the MM5452VX/NOPB offers 32 segment outputs and a separate DATA ENABLE pin. This makes MM5453VX/NOPB ideal when full 33-pin control is required without external gating logic. Both share identical PLCC-44 packaging, electrical specifications, and timing behavior.
Does MM5453VX/NOPB require an external oscillator, or does it support internal timing?
The MM5453VX/NOPB supports both internal and external clock sources. With an external 50 kΩ resistor and 0.01 µF capacitor on ROSC_IN/COSC_IN, it generates ~75 Hz backplane frequency. Alternatively, it accepts an external 50% duty-cycle clock signal - useful for synchronizing LCD drive with AC line frequency or DVM integration periods to eliminate visual interference.
What is the maximum clock frequency supported by MM5453VX/NOPB at 5V supply?
At VDD = 5V, the MM5453VX/NOPB supports a maximum clock input frequency of 750 kHz, as specified in the Electrical Characteristics table. Input rise/fall times must not exceed 300 ns, and the AC test waveform requires tr/tf ≤20 ns for characterization. This allows rapid display updates while maintaining reliable serial data capture.
Can MM5453VX/NOPB drive bar graph LCDs, and how is segment mapping handled?
Yes, the MM5453VX/NOPB supports alphanumeric and bar graph LCDs because all 32 segment outputs are individually controllable with no built-in character generator. Segment mapping is fully programmable: the host microcontroller formats serial data to match physical LCD pinout - e.g., bit 1 → Pin 18 → Segment A of Digit 1. Figure 8 in the datasheet shows a typical mapping example.
Is MM5453VX/NOPB RoHS compliant, and what is its moisture sensitivity level?
Per TI's Packaging Information Addendum, MM5453VX/NOPB is RoHS compliant and manufactured in a PLCC (FN) package with MSL rating and peak reflow temperature specified as "Call TI". TI documentation confirms production status and -40°C to +85°C operating temperature range, but final MSL details require direct consultation with TI or authorized distributors due to package-specific process validation.
MM5453VX/NOPB 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/NOPB FAQ
1.How can I place an order for MM5453VX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for MM5453VX/NOPB 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/NOPB reliable?
The price and inventory of MM5453VX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM5453VX/NOPB is usually 5 days.
3.What payment methods are accepted for MM5453VX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM5453VX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM5453VX/NOPB?
MM5453VX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM5453VX/NOPB 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/NOPB?
For technical support, including MM5453VX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM5453VX/NOPB requirements.
6.How does Aetrix verify that MM5453VX/NOPB is sourced from the original manufacturer or authorized distributors?
All MM5453VX/NOPB 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/NOPB meets industry standards.
7.What is the process for return or replacement of MM5453VX/NOPB?
All MM5453VX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with MM5453VX/NOPB, 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/NOPB part is unused and in its original packaging.
Return procedure for MM5453VX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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