LMH1981MT

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LMH1981MT

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Video ICs

  • HerstellerTexas Instruments

  • Herstellerteil #LMH1981MT

  • Auf Lager20472

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Description

The LMH1981MT is a versatile video sync separator IC designed by Texas Instruments. It is primarily used in video applications for extracting timing signals from various video formats, such as NTSC, PAL, and HDTV. The device is capable of detecting and separating horizontal and vertical sync signals, as well as odd/even field information from the composite video signal. It features automatic format detection, which simplifies the design process when working with multiple video standards.
The LMH1981MT offers low-power consumption and operates with a single 3.3V power supply. Its output signals are compatible with both TTL and CMOS logic levels, making it suitable for interfacing with a wide range of processors and other digital components. The device is housed in a compact SOIC-14 package, which facilitates easy integration into various circuit designs.
Overall, the LMH1981MT is a reliable solution for developers working on video processing applications, including video capture, editing, and display systems, where precise synchronization is crucial.

Equivalent

The LMH1981MT is a video sync separator chip. Some equivalent or similar products include:
1. EL1883: A sync separator from Intersil.
2. MAX7456: A sync separator and OSD generator from Maxim Integrated.
3. AD725: A video encoder with similar functionalities from Analog Devices.
4. LM1881: A basic sync separator from Texas Instruments.
While these chips may share similar functions, it's important to check the specific requirements and features needed for your application.

Features

The LMH1981MT is a precision multi-format video sync separator designed to extract timing information from a variety of video inputs. Key features include:
1. Multi-Format Compatibility: Supports various video standards, including NTSC, PAL, SECAM, and all HD and SD formats.
2. Sync Extraction: Accurately separates horizontal and vertical sync signals from composite video, component video, or tri-level sync inputs.
3. Pulse Generation: Provides precise output pulses for horizontal sync, vertical sync, and field identification.
4. Automatic Format Detection: Capable of automatically detecting the video format, adjusting its operations accordingly.
5. Low Power Consumption: Designed to operate efficiently with low power requirements, making it suitable for portable and battery-powered applications.
6. Small Package: Available in a compact TSSOP package, making it easy to integrate into various designs with space constraints.
7. Robust Performance: Offers excellent noise rejection and stability, ensuring reliable performance even in noisy environments.
These features make the LMH1981MT ideal for applications in video processing, broadcast equipment, and display systems.

Pinout

The LMH1981MT is a video sync separator IC manufactured by Texas Instruments. It is typically used for extracting synchronization signals from various video formats. The device is housed in a 14-pin TSSOP (Thin Shrink Small Outline Package).
Here are the main pin functions:
1. Pin 1 (VCC): Power supply input.
2. Pin 2 (GND): Ground.
3. Pin 3 (CSO): Composite sync output.
4. Pin 4 (HSO): Horizontal sync output.
5. Pin 5 (VSO): Vertical sync output.
6. Pin 6 (FSC): Fast switch control.
7. Pin 7 (VCR): Vertical count reset.
8. Pin 8 (RR): Reference resistor.
9. Pin 9 (FIL): Filter.
10. Pin 10 (Serr): Serration pulse output.
11. Pin 11 (CIO): Composite input/output.
12. Pin 12 (BYP): Bypass.
13. Pin 13 (SSO): Sync separator output.
14. Pin 14 (RT): Reset timing.
The LMH1981MT provides a reliable means to separate sync signals from an incoming composite or component video signal, supporting a variety of video standards like NTSC, PAL, and more.

Manufacturer

The LMH1981MT is a product manufactured by Texas Instruments (TI). Texas Instruments is a global technology company that designs and manufactures semiconductors and various integrated circuits for electronics designers and manufacturers worldwide. TI is known for its wide range of products in the analog and embedded processing sectors, serving industries such as automotive, industrial, personal electronics, communications equipment, and enterprise systems.

Application

The LMH1981MT is a versatile video sync separator used primarily in broadcast and video processing applications. It extracts timing information from various video formats, including composite, component, and HD video signals. Key application areas include video capture and editing systems, video test equipment, security and surveillance systems, and any professional AV equipment requiring precise video synchronization and timing. Its ability to handle multiple video standards makes it suitable for use in multi-format video systems, ensuring accurate video signal processing and display.

Package

The LMH1981MT is a video sync separator IC that comes in a TSSOP (Thin Shrink Small Outline Package) package type. This package is compact, designed for surface mounting, and typically comes with 14 pins, making it suitable for applications requiring high density and small form factor.

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