Texas Instruments SN65LVDS94DGGG4

Overview

SN65LVDS94DGGG4 from Texas Instruments is an LVDS serdes receiver IC performing 4:28 data channel expansion at up to 1.904 Gbps, converting 5-channel LVDS serial input (4 data + 1 clock) into 28-bit LVTTL parallel output with embedded 7× PLL clock synthesis. It operates from a single 3.3-V supply, consumes 250 mW typical, and targets high-density backplane bus extension in industrial subsystems.

For engineers reviewing the SN65LVDS94DGGG4 datasheet, SN65LVDS94DGGG4 pinout, SN65LVDS94DGGG4 application, or SN65LVDS94DGGG4 equivalent, key selection criteria include its 20–68 MHz PLL input frequency range, 56-pin TSSOP package with LVDS/TTL dual-domain I/O, -40°C to 85°C industrial temperature rating, and compliance with ANSI/EIA/TIA-644 LVDS standard.

Technical Context

The SN65LVDS94DGGG4 integrates four 7-bit serial-in/parallel-out shift registers synchronized to a 7× internal PLL clock derived from CLKINP/CLKINM, enabling deterministic data recovery at 7× the input clock rate. Its LVDS receivers accept differential inputs with ±100-mV thresholds and support common-mode voltage from VCC−0.8 V to VCC.

Output timing is edge-aligned: all 28 D0–D27 LVTTL outputs are valid on the rising edge of CLKOUT, which is phase-locked to CLKIN and exhibits ≤±300 ps cycle-to-cycle jitter. The SHTDN pin provides 5-V-tolerant active-low shutdown, reducing current to <1 mW while clearing internal registers.

Key Specifications

Pinout & Package

SN65LVDS94DGGG4 is housed in a 56-pin Thin Shrink Small-Outline Package (TSSOP-DGG), 13.9 mm × 6.1 mm footprint, 1.2 mm max height, 0.5 mm pitch, moisture sensitivity level 2 (260°C peak reflow).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LVDS deserializer applications.

Compared with DS90CR286MTD and SN65LVDS94DGGR, the SN65LVDS94DGGG4 delivers wider PLL input range (20–68 MHz vs. 25–65 MHz), native 5-V-tolerant shutdown control, and tube packaging optimized for engineering validation-making it the preferred choice for new industrial subsystem designs requiring flexibility and long-term supply stability.

Availability

SN65LVDS94DGGG4 is available at Aetrix Electronics and suitable for backplane bus extension, virtual backplane transceivers, and industrial display interfaces requiring stable component supply, long-lifecycle support, and guaranteed industrial temperature performance.

Supply support for SN65LVDS94DGGG4 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 specializing in analog, embedded processing, and high-reliability ICs for industrial, automotive, and communications markets.

The SN65LVDS94DGGG4 belongs to TI's LVDS SerDes family, engineered specifically for high-speed, low-EMI point-to-point data transmission in industrial backplanes and modular subsystem interconnects.

FAQ

What is the primary function of the SN65LVDS94DGGG4 in a data link?

The SN65LVDS94DGGG4 functions as an LVDS deserializer that expands 4 serial data lanes plus 1 clock lane (5 total LVDS pairs) into a 28-bit LVTTL parallel output bus. It uses an internal 7× PLL to recover data at seven times the input clock rate, then presents synchronized outputs on the rising edge of CLKOUT-enabling high-bandwidth, low-noise communication across backplane or cable interconnects.

Does the SN65LVDS94DGGG4 require external components for PLL operation?

No, the SN65LVDS94DGGG4 requires no external components for PLL operation. Its integrated phase-locked loop synthesizes a stable 7× clock from the incoming LVDS CLKIN signal across a 20–68 MHz input range, eliminating the need for external capacitors, resistors, or crystal oscillators-reducing BOM cost and board space while ensuring reliable lock acquisition.

What is the significance of the SHTDN pin on the SN65LVDS94DGGG4?

The SHTDN pin on the SN65LVDS94DGGG4 is an active-low shutdown control that disables the LVDS receivers and clears all internal shift registers to logic low. It is 5-V tolerant, allowing direct connection to legacy 5-V control logic without level translation. When asserted, the device draws less than 1 mW, making it ideal for power-gated subsystems in industrial equipment with strict standby power budgets.

Can the SN65LVDS94DGGG4 be used with non-TI LVDS transmitters?

Yes, the SN65LVDS94DGGG4 can be used with non-TI LVDS transmitters provided they comply with the ANSI/EIA/TIA-644 LVDS standard and deliver compatible 4-data + 1-clock LVDS streams at supported frequencies (20–68 MHz). Its differential input thresholds (±100 mV) and common-mode range (VCC−0.8 V to VCC) ensure interoperability with certified third-party LVDS PHYs meeting the same specification.

What package type and thermal characteristics does the SN65LVDS94DGGG4 have?

The SN65LVDS94DGGG4 uses a 56-pin TSSOP package (DGG), measuring 13.9 mm × 6.1 mm with 0.5 mm pitch and 1.2 mm max height. Its thermal performance is characterized with a junction-to-ambient θJA of 11 mW/°C above 25°C ambient, supporting 717 mW maximum power dissipation at 85°C ambient-validated for continuous operation in industrial enclosures without forced airflow.