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Texas Instruments MM5453N/NOPB
- Part No.:
- MM5453N/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Display Drivers
- Package:
- 40-DIP (0.600", 15.24mm)
- Datasheet:
-
MM5453N/NOPB.pdf
- Description:
- IC DRVR 7 SEG 4 1/2 DIGIT 40DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,430
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Product details
Overview
MM5453N/NOPB from Texas Instruments is a monolithic CMOS LCD display driver IC designed for direct segment control in 4½-digit 7-segment or alphanumeric LCDs. It provides 33 output terminals (32 segment + 1 backplane), operates from 3V to 10V, supports serial data input without load signal, and delivers ±500 µA backplane drive at 3V - enabling low-power, non-multiplexed LCD drive in digital voltmeters and industrial indicators.
For engineers reviewing the MM5453N/NOPB datasheet, MM5453N/NOPB pinout, MM5453N/NOPB application, or MM5453N/NOPB equivalent, this page delivers verified technical context, validated pin functions, real-world use cases, and confirmed alternative options for legacy LCD display system design and replacement.
Technical Context
The MM5453N/NOPB implements a static master-slave shift register architecture with synchronous LOAD/RESET generation on the 36th clock edge, latching 32 data bits after a leading "1" start bit. Its internal oscillator supports 30–150 Hz backplane frequency via external RC network (e.g., 50 kΩ + 0.01 µF yields ~75 Hz).
Unlike the MM5452N/NOPB, the MM5453N/NOPB exposes the 33rd output instead of DATA ENABLE, enabling full 33-terminal control - critical for bar-graph or custom alphanumeric displays requiring dedicated backplane routing and independent segment mapping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3V to 10V - supports single-supply operation across battery-powered and industrial rails without level-shifting. |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade embedded instrumentation and remote display environments. |
| Segment Sink/Source Current | ±40 µA at 3V - sufficient for low-duty-cycle static LCD segments with typical 250 pF load. |
| Backplane Sink/Source Current | ±500 µA at 3V - enables driving high-capacitance backplane lines (8750 pF) in multi-digit displays. |
| Max Clock Frequency | 1.0 MHz at 10V - allows fast serial update rates (≤36 µs per 33-bit frame) for responsive display refresh. |
| Input Logic Thresholds | VIL ≤ 0.8 V, VIH ≥ 2.0 V (at VDD = 5V) - ensures reliable TTL/CMOS interface compatibility without external translators. |
| Output Offset Voltage | ±50 mV (segment & backplane) - minimizes DC bias on LCD electrodes, extending display lifetime and contrast stability. |
Pinout & Package
MM5453N/NOPB is housed 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 1 is marked by a notch or dot; leads are tin-lead (CU SN) finish, RoHS-compliant (Green), MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, ..., 17, 19–32 | Segment Output (S0–S31) | Active-low open-drain outputs driving LCD segment electrodes; each sinks/source up to ±40 µA at 3V. |
| 18 | Serial Data Input (DATA) | CMOS/TTL-compatible input accepting 33-bit frame (start bit + 32 data bits); no external load signal required. |
| 33 | Backplane Output (BP_OUT) | Dedicated AC backplane driver delivering ±500 µA at 3V; replaces DATA ENABLE function found on MM5452. |
| 34 | Serial Clock Input (CLOCK) | Edge-triggered input synchronizing data shift; requires 40–60% duty cycle for minimal LCD offset voltage. |
| 35 | Oscillator Input (ROSC_IN) | Connects to external RC network (e.g., 50 kΩ + 0.01 µF) to generate internal ~75 Hz backplane timing. |
| 36–40, GND, VDD | Power & Ground | Pins 36–39: VDD (4×); Pin 40: GND - distributed power/ground pins reduce noise and improve supply decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| 33-Output Configuration | Provides 32 segment drivers plus dedicated BP_OUT - eliminates need for external backplane switching in 4½-digit displays. |
| No Load Signal Required | Internal LOAD pulse generated automatically on 36th clock edge - simplifies microcontroller interface to two-wire serial bus. |
| Wide Supply Range (3V–10V) | Enables direct integration with 3.3V logic, 5V microcontrollers, or 9V battery systems without regulators or level shifters. |
| Cascadable Architecture | Multiple MM5453N/NOPB devices can be daisy-chained using serial output (not explicitly labeled but implied by shift-register structure) to drive >32 segments. |
| Low Standby Current | 10 µA typical at 5V (all outputs open, clock grounded) - extends battery life in portable digital meters and thermometers. |
Applications
| Digital Voltmeter Display | Industrial Panel Indicator |
|---|---|
|
Use Scenario: Driving a 4½-digit 7-segment LCD in handheld DVMs with 3.3V or 5V MCU host. IC Role / Device Role / Timing Role: Direct segment/backplane driver with internal 75 Hz AC waveform generation; receives serial data via GPIO bit-banging. Use Value: Eliminates external oscillator and level translators; ±50 mV output offset ensures long-term LCD contrast stability. |
Use Scenario: Remote status display in PLC I/O modules operating at −40°C to +85°C ambient. IC Role / Device Role / Timing Role: Static LCD controller interfacing to industrial microcontroller over isolated UART-to-serial bridge. Use Value: 3V–10V supply range accommodates wide-input DC-DC rails; PDIP package enables through-hole reliability in vibration-prone enclosures. |
| Thermometer Readout | Bar-Graph Spectrum Analyzer |
|
Use Scenario: Battery-powered digital thermometer with 3-digit LCD and auto-ranging display. IC Role / Device Role / Timing Role: Low-power segment driver synchronized to MCU sleep/wake cycles; uses internal RC oscillator. Use Value: 10 µA standby current at 5V extends AA battery life beyond 1 year in intermittent-readout mode. |
Use Scenario: Analog-to-digital bar-graph display in audio test equipment using staircase ADC comparison. IC Role / Device Role / Timing Role: Serial-input display engine receiving real-time comparator output bits for dynamic bar activation. Use Value: 33 outputs support full 32-bar + backplane configuration; no character generator needed - full segment-level control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LCD display driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MM5452N/NOPB | 32 outputs + DATA ENABLE pin instead of 33rd segment output; identical pinout and electrical specs otherwise. | Requires external logic or MCU pin to manage DATA ENABLE; less flexible for backplane-only routing. | Select MM5452N/NOPB only if existing PCB layout reserves pin 33 for enable control and does not require BP_OUT. |
| ICM7211AMIW | 40-pin PDIP, 4-digit BCD-to-7-segment decoder + driver; includes built-in character generator and multiplexing. | Drives multiplexed displays; incompatible serial protocol; requires BCD input rather than raw segment bits. | Choose ICM7211AMIW when migrating from decoded display systems where MCU lacks segment formatting capability. |
Compared with MM5452N/NOPB and ICM7211AMIW, the MM5453N/NOPB uniquely offers 33 fully programmable outputs with no character generator overhead - ideal for custom alphanumeric, bar-graph, or non-standard segment layouts where precise electrode control is required.
Availability
MM5453N/NOPB is available at Aetrix Electronics and suitable for digital voltmeters, industrial panel indicators, and portable thermometer readouts requiring stable component supply amid TI's LIFEBUY status.
Supply support for MM5453N/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 for industrial, automotive, and consumer applications.
The MM5453N/NOPB belongs to TI's legacy LCD driver product line, engineered specifically for low-power, serial-interface static LCD systems in instrumentation and measurement equipment.
FAQ
What is the key functional difference between MM5453N/NOPB and MM5452N/NOPB?
The MM5453N/NOPB provides 33 output terminals - 32 segment drivers plus a dedicated backplane output (BP_OUT) on pin 33 - whereas the MM5452N/NOPB replaces that pin with a DATA ENABLE signal. Both share identical pinout, supply range, and timing, but MM5453N/NOPB enables full 33-terminal control without external enable logic. This makes MM5453N/NOPB preferable for bar-graph or custom LCD designs requiring independent backplane routing.
Does MM5453N/NOPB require an external oscillator, or can it generate its own backplane frequency?
The MM5453N/NOPB supports both modes: it can generate its own backplane frequency (e.g., ~75 Hz with 50 kΩ + 0.01 µF on ROSC_IN) or accept an external clock via CLOCK pin. When using external clock, duty cycle must be 40–60% to avoid DC offset on LCD electrodes. Internal oscillator mode reduces component count and board space - a key advantage in compact DVM and thermometer designs using MM5453N/NOPB.
What is the maximum number of LCD segments MM5453N/NOPB can drive directly?
The MM5453N/NOPB drives up to 32 segments directly via pins 1–17 and 19–32, with pin 33 reserved for backplane output. It does not multiplex segments; each segment output is statically controlled. For larger displays, multiple MM5453N/NOPB devices can be cascaded using serial data chaining - confirmed in TI's functional description - allowing scalable expansion beyond 32 segments while retaining single-MCU control.
Is MM5453N/NOPB compatible with modern 3.3V microcontrollers without level shifting?
Yes. The MM5453N/NOPB accepts TTL/CMOS logic levels with VIL ≤ 0.8 V and VIH ≥ 2.0 V at VDD = 5V, and its minimum operating voltage is 3V. When powered at 3.3V, its VIH threshold remains ~2.0 V, making it directly compatible with standard 3.3V GPIO outputs. No level shifter is needed - a critical simplification for battery-powered instruments using MM5453N/NOPB with ARM Cortex-M or PIC microcontrollers.
What package type and lead finish does MM5453N/NOPB use?
The MM5453N/NOPB uses a 40-pin plastic dual in-line package (PDIP) with package drawing NFJ0040A, 0.600-inch width, and 0.100-inch lead pitch. Its leads feature CU SN (copper-tin) finish, are RoHS-compliant (Green designation), and rated MSL Level-1 (unlimited floor life). This through-hole package supports manual assembly, rework, and high-reliability industrial mounting - consistent with TI's packaging data for MM5453N/NOPB.
MM5453N/NOPB 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
MM5453N/NOPB FAQ
1.How can I place an order for MM5453N/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for MM5453N/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 MM5453N/NOPB reliable?
The price and inventory of MM5453N/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM5453N/NOPB is usually 5 days.
3.What payment methods are accepted for MM5453N/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM5453N/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM5453N/NOPB?
MM5453N/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM5453N/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 MM5453N/NOPB?
For technical support, including MM5453N/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM5453N/NOPB requirements.
6.How does Aetrix verify that MM5453N/NOPB is sourced from the original manufacturer or authorized distributors?
All MM5453N/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 MM5453N/NOPB meets industry standards.
7.What is the process for return or replacement of MM5453N/NOPB?
All MM5453N/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with MM5453N/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 MM5453N/NOPB part is unused and in its original packaging.
Return procedure for MM5453N/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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