LMH1981MT/NOPB
| Parameters | |
|---|---|
| Series | - |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | 14-TSSOP (0.173", 4.40mm Width) |
| Mfr | Texas Instruments |
| Mounting Type | Surface Mount |
| Applications | Professional Video |
| Supplier Device Package | 14-TSSOP |
| Function | Separator |
| Voltage - Supply | 3.3V ~ 5V |
| Standards | NTSC, PAL |
| Control Interface | Serial |
| Package | Tube |
| Product Status | Active |
| Base Product Number | LMH1981 |
| REACH Status | REACH Unaffected |
| Standard Package | 94 |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
LMH1981MT/NOPB TI Multi-Format Video Sync Separator IC
The LMH1981MT/NOPB is a high-performance, multi-format video sync separator IC from Texas Instruments (TI), designed to extract critical timing signals from a wide range of standard analog video inputs. Housed in a compact 14-pin TSSOP surface-mount package, this device supports SD, ED, and HD video standards including NTSC, PAL, 480I/P, 576I/P, 720P, and 1080I/P/PsF across composite (CVBS), S-Video (Y/C), and component (YPBPR/GBR) interfaces. It operates from a wide 3.135V to 5.25V supply range and is specified for the industrial temperature range (-40°C to +85°C), ensuring robust performance in professional video and broadcast environments.
This IC offers automatic video format detection, eliminating the need for microcontroller programming, and employs precise 50% sync slicing for accurate signal extraction from inputs ranging from 0.5VPP to 2VPP, even with degraded or irregular signal amplitudes. It provides six critical CMOS rail-to-rail outputs: composite, horizontal (HSync), and vertical (VSync) syncs, burst/back porch timing, odd/even field indicator, and an 11-bit serial video format output. Key performance attributes include ultra-low jitter on the HSync falling edge, compatibility with bi-level and tri-level sync signals, low power consumption (typically 30mW), and full RoHS compliance.
Choosing the LMH1981MT/NOPB delivers distinct benefits:
Automatic format detection simplifying system design
Broad SD/HD video compatibility for universal application
Ultra-low jitter HSync ensuring stable clock generation
Wide input amplitude tolerance for degraded signals
Industrial temperature rating for reliable operation
Alternative sync separators
● LMH1981MTX/NOPB: Tape-and-reel packaged variant of the same sync separator, offering identical performance and specifications for high-volume automated assembly.
● AD810: Analog Devices multi-format video sync separator, supporting similar SD/HD standards and providing essential HSync/VSync outputs for alternative system designs.
● EL4584: Intersil (Renesas) high-speed sync separator IC, optimized for low jitter and wide input compatibility, serving as a direct drop-in alternative for professional video applications.
● MAX7456: Maxim Integrated (Analog Devices) multi-function video processor with integrated sync separation, ideal for designs requiring additional OSD capabilities alongside sync extraction.
