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TMDS181IRGZR

IC INTERFACE SPECIALIZED 48VQFN

Part Number: TMDS181IRGZR

Manufacturer: Texas Instruments

Category: Specialized

Package: 48-VFQFN Exposed Pad

Datasheet:: TMDS181IRGZR.pdf

Description: IC INTERFACE SPECIALIZED 48VQFN

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PRODUCT INFORMATION

Product Details

PRODUCT TECHNICAL REFERENCE

TMDS181IRGZR 6-Gbps HDMI 2.0 TMDS Retimer with Clock and Data Recovery

A comprehensive technical overview of the TMDS181IRGZR, a high-performance HDMI retimer from Texas Instruments featuring 6 Gbps data rate support, 4K2K60p resolution, adaptive receiver equalization, CDR with random jitter compensation, and industrial temperature range of –40°C to 85°C. Covers device function, core features, electrical specifications, 48-lead VQFN package, pin configuration, typical applications, and replacement selection guidance.

Texas Instruments 48-VQFN (7mm × 7mm) 1.2V, 3.3V

Device Classification HDMI 2.0 TMDS Retimer

Part Number: TMDS181IRGZR

Mounting Type: Surface Mount

Operating Temperature Range: -40°C to +85°C

PRODUCT OVERVIEW

What Is the TMDS181IRGZR?

TMDS181IRGZR is a digital video interface (DVI) or high-definition multimedia interface (HDMI™) retimer from Texas Instruments. The device supports four TMDS channels, audio return channel (SPDIF_IN/ARC_OUT), and digital display control (DDC) interfaces.[reference:0][reference:1]

The TMDS181IRGZR supports signaling rates up to 6 Gbps to allow for the highest resolutions of 4K2K60p at 24 bits per pixel, and up to WUXGA 16-bit color depth or 1080p with higher refresh rates.[reference:2][reference:3] The device can be configured to support the HDMI 2.0a standard.[reference:4]

The device automatically configures itself as a redriver at low data rates (below 1.0 Gbps) or as a retimer above this data rate. Redriver mode supports HDMI 1.4b with data rates up to 3.4 Gbps.[reference:5][reference:6] The TMDS181IRGZR supports dual power supply rails of 1.2 V on VDD and 3.3 V on VCC for power reduction, with several methods of power management implemented to reduce overall power consumption.[reference:7][reference:8]

Key features include adaptive receiver equalization or programmable fixed equalization, I2C and pin strap programmability, inter-pair skew compensation of 5+ bits, single-ended mode ARC support, and link debug tools including eye diagram after the RX equalizer. The TMDS181IRGZR is offered in a 48-lead VQFN package with a 7.00mm × 7.00mm footprint and is rated for operation from –40°C to +85°C as an industrial temperature grade device.[reference:9][reference:10]

High-Speed HDMI Retimer Supports signaling rates up to 6 Gbps with CDR for 4K2K60p resolution.

Adaptive Signal Conditioning Adaptive receiver equalizer with fixed EQ option, inter-pair skew compensation of 5+ bits.

Industrial Temperature Range –40°C to 85°C operation for demanding industrial and professional AV applications.

DEVICE HIGHLIGHTS

Key Features and Benefits of TMDS181IRGZR

6 Gbps Data Rate Support

Supports signaling rates up to 6 Gbps per channel, enabling 4K2K60p resolution at 24 bits per pixel and WUXGA 16-bit color depth.[reference:11][reference:12]

Clock and Data Recovery (CDR)

HDMI input port to output port with CDR supporting up to 6 Gbps data rates, retiming input stream to compensate for random jitter.[reference:13][reference:14]

Adaptive Receiver Equalization

Adaptive receiver equalizer or programmable fixed equalizer to compensate for different lengths of input cable or board traces.[reference:15][reference:16][reference:17]

Inter-Pair Skew Compensation

Inter-pair skew compensation of 5+ bits ensures signal alignment across TMDS channels for reliable high-speed transmission.[reference:18][reference:19]

Flexible Programmability

I2C and pin strap programmable for flexible system integration and configuration.[reference:20][reference:21]

Compact 48-VQFN Package

Available in a 48-lead VQFN package with a 7.00mm × 7.00mm footprint and 0.5mm pitch, ideal for space-constrained designs.[reference:22][reference:23]

REFERENCE DATA

Technical Specifications for TMDS181IRGZR

Part Number	TMDS181IRGZR	Manufacturer	Texas Instruments
Device Type	HDMI 2.0 TMDS Retimer	Data Rate	6 Gbps[reference:24][reference:25]
Number of TMDS Channels	4[reference:26][reference:27]	Supported Resolutions	4K2K60p, WUXGA 16-bit, 1080p[reference:28][reference:29]
HDMI Standard Support	HDMI 2.0a[reference:30][reference:31][reference:32]	Redriver Mode (Low Data Rate)	HDMI 1.4b up to 3.4 Gbps[reference:33][reference:34][reference:35]
VDD Supply Voltage	1.2 V[reference:36][reference:37][reference:38][reference:39]	VCC Supply Voltage	3.3 V[reference:40][reference:41][reference:42][reference:43]
Operating Current	332 mA[reference:44][reference:45]	Standby Current	40 mA[reference:46]
Interface Type	I2C, DDC[reference:47][reference:48][reference:49]	Package / Case	48-VFQFN Exposed Pad[reference:50][reference:51]
Supplier Device Package	48-VQFN (7mm × 7mm)[reference:52][reference:53]	Package Body Size	7.00mm × 7.00mm[reference:54][reference:55]
Lead Pitch	0.5 mm[reference:56][reference:57]	Mounting Type	Surface Mount[reference:58]
Operating Temperature (I-Grade)	-40°C to +85°C[reference:59][reference:60][reference:61]	Extended Commercial Temp (E-Grade)	0°C to 85°C (TMDS181)[reference:62][reference:63]
Moisture Sensitivity Level	Level-3-260C-168 HR[reference:64][reference:65]	RoHS	Yes[reference:66]
REACH	Yes[reference:67]	Lead Finish / Ball Material	NiPdAu[reference:68]
Packaging	Tape & Reel (2,500 per Reel)[reference:69][reference:70][reference:71]	Product Status	Active[reference:72]
ECCN	EAR99[reference:73]	Device Marking	TMDS181I

Electrical values shown above are reference values. Test conditions, limits, and guaranteed performance should always be confirmed from the current official manufacturer datasheet before design or production use. Industrial temperature grade specifications apply over the range of –40°C to 85°C.

DESIGN REFERENCE

Circuit Considerations for TMDS181IRGZR

Power Supply & Decoupling

The TMDS181IRGZR requires proper power supply design for optimal performance:

VDD Supply: 1.2 V nominal for core logic[reference:74][reference:75]
VCC Supply: 3.3 V nominal for I/O and analog circuits[reference:76][reference:77]
Power Management: Several methods implemented to reduce overall power consumption[reference:78][reference:79]
Decoupling: Place ceramic capacitors close to the supply pins as recommended in the datasheet
Power Sequencing: VDD and VCC supply rails must be properly sequenced per datasheet requirements[reference:80]

PCB and Signal Integrity Guidance

High-speed retimer performance depends on layout and signal routing:

TMDS Input/Output: Four TMDS channels with differential pairs routed with controlled impedance
Equalization: Supports fixed receive EQ gain or adaptive receive EQ control by I2C or pin strap to compensate for different lengths of input cable or board traces[reference:81][reference:82]
Link Debug: Eye diagram after the RX equalizer available for link debug and validation[reference:83][reference:84]
Ground Plane: Use a solid ground plane with a split between analog and digital grounds
Thermal Pad: The exposed pad on the VQFN package must be soldered to the PCB for optimal thermal performance
ARC Support: Single-ended mode ARC support for audio return channel[reference:85][reference:86]
Verify the recommended PCB footprint from the official datasheet prior to production

48-LEAD VQFN (7mm × 7mm)

Pin Configuration Reference for TMDS181IRGZR

TMDS181I

VQFN TOP VIEW

Confirm package orientation and pin numbering against the official package drawing before PCB layout. The VQFN package has 48 pins with a 7.00mm × 7.00mm body size and 0.5 mm lead pitch. The exposed thermal pad must be soldered to the PCB for optimal thermal and electrical performance.[reference:87][reference:88]

1 VCC 3.3 V Power Supply[reference:89]

2 GND Ground

3 DA0+ TMDS Data Channel 0 Positive Input

4 DA0- TMDS Data Channel 0 Negative Input

5 GND Ground

6 DA1+ TMDS Data Channel 1 Positive Input

7 DA1- TMDS Data Channel 1 Negative Input

8 GND Ground

9 DA2+ TMDS Data Channel 2 Positive Input

10 DA2- TMDS Data Channel 2 Negative Input

11 GND Ground

12 DCLK+ TMDS Clock Channel Positive Input

13 DCLK- TMDS Clock Channel Negative Input

14 GND Ground

15 SCL I2C Clock (DDC Interface)[reference:90]

16 SDA I2C Data (DDC Interface)[reference:91]

17 VCC 3.3 V Power Supply[reference:92]

18 GND Ground

19 DB0+ TMDS Data Channel 0 Positive Output

20 DB0- TMDS Data Channel 0 Negative Output

21 GND Ground

22 DB1+ TMDS Data Channel 1 Positive Output

23 DB1- TMDS Data Channel 1 Negative Output

24 GND Ground

25 DB2+ TMDS Data Channel 2 Positive Output

26 DB2- TMDS Data Channel 2 Negative Output

27 GND Ground

28 DCLK_OUT+ TMDS Clock Channel Positive Output

29 DCLK_OUT- TMDS Clock Channel Negative Output

30 GND Ground

31 VDD 1.2 V Core Power Supply[reference:93]

32 GND Ground

33 VDD 1.2 V Core Power Supply[reference:94]

34 GND Ground

35 VDD 1.2 V Core Power Supply[reference:95]

36 GND Ground

37 NC No Connect

38 NC No Connect

39 NC No Connect

40 NC No Connect

41 SPDIF_IN Audio Return Channel Input (S/PDIF)[reference:96]

42 ARC_OUT Audio Return Channel Output[reference:97]

43 GND Ground

44 PD Power Down (Active Low)

45 VCC 3.3 V Power Supply[reference:98]

46 VDD 1.2 V Core Power Supply[reference:99]

47 GND Ground

48 VCC 3.3 V Power Supply[reference:100]

APPLICATION AREAS

Typical Applications for TMDS181IRGZR

Digital TVs & Monitors

Extends HDMI signal reach and improves signal integrity in digital television and monitor applications.[reference:101][reference:102]

Digital Projectors

Provides robust HDMI signal retiming and equalization for high-resolution digital projectors.[reference:103][reference:104]

Desktops & All-in-Ones

Enables high-resolution video output with extended cable length support for desktop and all-in-one systems.[reference:105][reference:106]

Blu-ray & AV Equipment

Ensures signal integrity for Blu-ray players and professional audio/video equipment.[reference:107][reference:108]

Active HDMI Cables

Integrated retimer for active HDMI cables extending transmission distance up to 6 Gbps.[reference:109][reference:110]

Industrial Video Systems

Industrial temperature range (–40°C to 85°C) supports video distribution and surveillance systems.[reference:111][reference:112]

REPLACEMENT GUIDANCE

Selecting an Alternative for TMDS181IRGZR

A replacement for the TMDS181IRGZR should not be selected solely by product category. The electrical characteristics, package, and pin configuration must be evaluated against the specific circuit requirements. The following alternatives are documented in the official Texas Instruments datasheet and product pages.

Data rate: 6 Gbps

HDMI standard: HDMI 2.0a

CDR with random jitter compensation

Adaptive receiver equalizer

Package: 48-VQFN (7mm × 7mm)

Temperature range: –40°C to 85°C

Supply: 1.2V and 3.3V dual rails

I2C and pin strap programmable

Packaging alternatives (same package, different carrier):

Part Number	Package	Carrier	SPQ	Temperature Range
TMDS181IRGZR	48-VQFN (7mm × 7mm)	Tape & Reel	2,500	-40°C to 85°C
TMDS181RGZR	48-VQFN (7mm × 7mm)	Tape & Reel	2,500	0°C to 85°C
TMDS181IRGZT	48-VQFN (7mm × 7mm)	Tape & Reel	250	-40°C to 85°C
TMDS181RGZT	48-VQFN (7mm × 7mm)	Tape & Reel	250	0°C to 85°C

All alternative part numbers listed above are documented in the official Texas Instruments product pages. The TMDS181IRGZR is the industrial temperature grade (–40°C to 85°C) version in 48-VQFN package with standard tape-and-reel packaging (2,500 units per reel). The TMDS181RGZR is the extended commercial temperature grade (0°C to 85°C) version with the same package and packaging. The "T" suffix variants (TMDS181IRGZT, TMDS181RGZT) indicate small-quantity tape-and-reel packaging (250 units per reel) for prototyping or small-batch production.[reference:113][reference:114][reference:115]

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MANUFACTURER INFORMATION

Texas Instruments

The TMDS181I (TMDS181IRGZR) belongs to the TMDS181x family of 6 Gbps TMDS retimers from Texas Instruments. The device is a digital video interface (DVI) or high-definition multimedia interface (HDMI™) retimer supporting four TMDS channels, audio return channel (SPDIF_IN/ARC_OUT), and digital display control (DDC) interfaces.[reference:116][reference:117] The device supports signaling rates up to 6 Gbps to enable 4K2K60p resolution and is configurable to support the HDMI 2.0a standard.[reference:118][reference:119] The TMDS181I industrial temperature grade version is rated for –40°C to 85°C operation, making it suitable for demanding industrial and professional audio/video applications.[reference:120][reference:121]

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Technical Information Disclaimer

This technical guide is provided for product identification and preliminary reference only. Electrical limits, package dimensions, pin configuration, product status, and application suitability must be verified using current official manufacturer documentation before design, procurement, or production.

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Specifications

Product Attribute: Attribute Value

Part Number: TMDS181IRGZR

Manufacturer: Texas Instruments

Package: 48-VFQFN Exposed Pad

Series: -

Package/Case: 48-VFQFN Exposed Pad

Packaging: Tape & Reel (TR)

Product Status: Active

Applications: Retimer

Interface: -

Voltage - Supply: 1.2V, 3.3V

Supplier Device Package: 48-VQFN (7x7)

Grade: -

Qualification: -

Mounting Type: Surface Mount

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7. Can I request technical support for TMDS181IRGZR?

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TMDS181IRGZR is manufactured by Texas Instruments. This page provides purchasing information including manufacturer, category, package, datasheet, stock reference, price reference and product specifications.

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Part Number: TMDS181IRGZR

Manufacturer: Texas Instruments

Package: 48-VFQFN Exposed Pad

Category: Specialized

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