Texas Instruments MM5483V

Overview

MM5483V from Texas Instruments is a monolithic CMOS LCD display driver IC in a 44-pin PLCC package, capable of driving up to 31 segments with serial data input/output, TTL-compatible logic levels, and wide 3.0–10 V supply operation. It supports alphanumeric and bar-graph displays and is used in digital clocks, thermometers, and industrial control indicators.

For engineers reviewing the MM5483V datasheet, MM5483V pinout, MM5483V application, or MM5483V equivalent, key selection considerations include its 31-segment drive capability, cascading support for expanded display size, low quiescent current (as low as 1.5 µA at 3.0 V), and compatibility with microprocessor-based COPS™ display systems.

Technical Context

The MM5483V implements a serial-in/parallel-out shift register with output latches, enabling asynchronous data loading via the LOAD signal. Its internal architecture supports both two-wire (LOAD tied to VDD) and three-wire control modes, with timing validated for clock frequencies up to 500 kHz and load pulse widths ≥500 ns.

It delivers segment outputs with ±50 mV offset voltage under defined capacitive loads (CSEGMENT = 250 pF, CBP = 8750 pF), and provides dedicated backplane (BP_Out) sourcing/sinking up to 320 µA - critical for multiplexed LCD biasing integrity across temperature ranges from −40°C to +85°C.

Key Specifications

Pinout & Package

MM5483V is housed in a 44-pin Plastic Leaded Chip Carrier (PLCC) package per JEDEC MS-018, FN0044A outline, with 4.57 mm maximum height and gull-wing leads. Pin 1 is marked by an optional notch or dot.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LCD display driver applications.

Compared with MM5483N/NOPB and ICM7211AMI, the MM5483V offers superior flexibility via serial programmability, 31-segment granularity, and RoHS-compliant PLCC packaging - making it optimal for modern embedded instrumentation requiring scalable, low-power LCD interfaces.

Availability

MM5483V is available at Aetrix Electronics and suitable for digital clocks, portable thermometers, industrial panel meters, and remote sensor readout units requiring stable component supply and long-term industrial-grade availability.

Supply support for MM5483V 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 leader delivering analog, embedded processing, and logic products with emphasis on reliability, longevity, and industrial-grade qualification.

The MM5483V belongs to TI's legacy LCD driver product line, engineered specifically for low-power, microprocessor-controlled alphanumeric and bar-graph display systems in instrumentation and control applications.

FAQ

What is the primary function of the MM5483V in an LCD display system?

The MM5483V serves as a serial-input LCD segment driver IC that converts incoming digital data into timed, multiplexed segment and backplane signals for driving up to 31 LCD segments. It integrates a shift register, output latches, and CMOS segment drivers - eliminating the need for external decoding logic in microprocessor-based displays. The MM5483V handles both static and dynamic bias generation required for reliable LCD operation across its full −40°C to +85°C range.

Does the MM5483V support cascading with other identical ICs?

Yes, the MM5483V supports hardware cascading via its dedicated DATA OUT pin, which relays shifted data to the DATA IN of the next MM5483V in the chain. This allows expansion beyond 31 segments without additional control lines or microcontroller overhead. Cascading preserves timing integrity as long as clock and load signals remain synchronized across all devices in the chain - a capability confirmed in the SNLS368E datasheet functional description and block diagram.

What package type is used for the MM5483V, and how does it differ from the MM5483N?

The MM5483V uses a 44-pin PLCC (Plastic Leaded Chip Carrier) package designated FN0044A, whereas the MM5483N uses a 40-pin PDIP (Plastic Dual-In-Line Package) designated NFJ0040A. The PLCC offers surface-mount compatibility, RoHS compliance, and higher pin density, while the PDIP is through-hole only and marked obsolete by TI. Both share identical electrical functionality, but the MM5483V's package enables automated assembly and better thermal performance in compact layouts.

Can the MM5483V operate from a 3.3 V supply, and what is its typical current draw at that voltage?

Yes, the MM5483V operates across 3.0 V to 10 V, fully supporting 3.3 V logic systems. At VDD = 3.0 V, its average supply current (IDD) is specified at 1.5 µA (min) to 2.5 µA (typ), measured with all outputs open and clock/data inputs held static. This ultra-low quiescent current makes the MM5483V especially suitable for battery-powered instruments where display runtime is critical - a value explicitly verified in the DC Electrical Characteristics table of SNLS368E.

Is the MM5483V pin-compatible with newer TI LCD drivers such as the CD4543 or TLC592x series?

No, the MM5483V is not pin-compatible with the CD4543 (BCD-to-7-segment latch/decoder) or TLC592x (constant-current LED drivers). Its 44-pin PLCC footprint, serial interface architecture, and LCD-specific output stage differ fundamentally from those families. The CD4543 uses parallel BCD input and lacks serial cascade; the TLC592x targets LED loads with PWM dimming and high-current sinks. Substitution would require PCB redesign and firmware adaptation - confirming the MM5483V's role as a purpose-built, non-interchangeable LCD driver.