TLV3801 - 225-ps High-Speed LVDS Comparator | Texas Instruments
MPN: TLV3801 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.78 | $6.78 |
| 10 | $6.1 | $61.00 |
| 100 | $5.45 | $545.00 |
| 500 | $4.9 | $2,450.00 |
| 1,000 | $4.4 | $4,400.00 |
Drop-in alternatives for TLV3801 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
TLV3801QDSGRQ1
β Drop-Inπ Reference alternative (not in catalog)
TLV3501QDSGRQ1
β‘ Same Packageπ Reference alternative (not in catalog)
LMH7220
β Drop-Inπ Reference alternative (not in catalog)
TLV3801 Maximum Ratings & Electrical Characteristics
| Propagation Delay | 225 ps |
| Toggle Frequency | 3 GHz |
| Output Type | LVDS, complementary |
| Supply Voltage (Single) | 2.7 V to 5.25 V |
| Supply Voltage (Split) | Β±1.35 V to Β±2.625 V |
| Power Consumption | 6.5 mW at 3.3 V |
| Enable Pin | Yes |
| Operating Temperature | -40C to +125C |
| Package | 8-WSON (DSG) 2x2 mm |
| Mounting Type | Surface Mount |
| Process Technology | Bipolar |
| Automotive Grade Option | TLV3801-Q1 (AEC-Q100) |
| RoHS Status | [DATA_NEEDED: RoHS status] |
| Input Common-Mode Range | [DATA_NEEDED: input common-mode range] |
| Rise/Fall Time | [DATA_NEEDED: rise/fall time] |
| Evaluation Module | TLV3801EVM |
TLV3801 Pin Configuration
| Pin 1 | IN+ β Non-inverting input |
| Pin 2 | GND / VEE β Ground or negative supply (split operation) |
| Pin 3 | OUT+ β LVDS true output |
| Pin 4 | OUT- β LVDS complementary output |
| Pin 5 | EN β Enable (power management) |
| Pin 6 | VCC / V+ β Positive supply |
| Pin 7 | VCC / V+ β Positive supply (internal bond) |
| Pin 8 | IN- β Inverting input |
| Pin Pad | Thermal Pad β Connect to ground plane for thermal relief |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
TLV3801 is suitable for 6 applications: LIDAR Pulse Detection, Differential Line Receiver, Optical Sensor Modules, Clock Recovery and Distribution, High-Speed Data Acquisition Thresholding, Automotive Sensing and Timing.
LIDAR Pulse Detection
The TLV3801 fits LIDAR receivers because its 225-ps propagation delay and 3 GHz toggle frequency resolve narrow return pulses with minimal timing skew, directly improving distance resolution. Used after the photodiode TIA as a threshold detector, the LVDS complementary outputs drive FPGA LVDS inputs with common-mode noise rejection, while the 6.5 mW consumption at 3.3 V keeps receiver power budgets low in multi-channel scanning systems.
Recommended
Differential Line Receiver
As a high-speed differential line receiver, the TLV3801's complementary LVDS outputs and bipolar differential input stage reject common-mode noise on long transmission paths. The 3 GHz toggle frequency supports data rates well beyond 1 Gbps in point-to-point links, and the wide 2.7 V to 5.25 V supply range lets it run from existing rails. Terminate the input pair with 100-ohm differential impedance to preserve eye diagram integrity.
Recommended
Optical Sensor Modules
The TLV3801 suits compact optical sensor modules because the 2x2 mm 8-WSON (DSG) package minimizes board area while delivering 225-ps response. Placed directly after the photoreceiver, it squares weak analog pulses into clean LVDS logic for the MCU or FPGA. The enable pin allows power gating in battery-operated or duty-cycled sensor nodes, cutting system average power without sacrificing instantaneous detection speed.
Recommended
Clock Recovery and Distribution
In clock recovery chains, the TLV3801 re-slices attenuated or noisy clock edges with only 225 ps of added delay and 3 GHz toggle capability, preserving timing margin in multi-GHz loops. The LVDS outputs interface directly to FPGA clock-capable inputs and minimize EMI versus CMOS drivers. Split-supply operation (Β±1.35 V to Β±2.625 V) allows zero-crossing detection of AC-coupled clock waveforms centered on ground.
Recommended
High-Speed Data Acquisition Thresholding
The TLV3801 serves as a fast over-threshold flag or window comparator in high-speed data acquisition systems, flagging events in 225 ps so the ADC or FPGA can trigger capture with minimal latency. Its bipolar input stage provides consistent switching across the -40C to +125C range, and the LVDS output levels match common FPGA banks, avoiding level-shifter stages between the comparator and the digital controller.
Recommended
Automotive Sensing and Timing
For automotive LIDAR, ultrasonic, and timing modules, the TLV3801-Q1 variant carries AEC-Q100 qualification in the identical 8-WSON package, letting one layout serve both industrial and automotive builds. The 225-ps delay supports time-of-flight measurement accuracy at centimeter scale, the enable pin supports power-domain sequencing, and operation to +125C covers under-hood and exterior sensing environments.
Recommended
Recommended Products Summary
Engineering reference data for TLV3801 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TLV3801QDSGRQ1 | TLV3811 | TLV3802 | TLV3501QDSGRQ1 |
|---|---|---|---|---|---|
| Package | 8-WSON (DSG) 2x2 mm | 8-WSON (DSG) 2x2 mm - same | 6-DSBGA - different footprint | 12-WSON - different footprint | 8-WSON (DSG) 2x2 mm - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Propagation Delay | 225 ps | 225 ps | 225 ps | 225 ps | 4.5 ns |
| Toggle Frequency | 3 GHz | 3 GHz | 3 GHz | 3 GHz | 80 MHz |
| Output Type | LVDS complementary | LVDS complementary | LVDS complementary | LVDS complementary | Push-pull CMOS |
| Supply Range (Single) | 2.7 V to 5.25 V | 2.7 V to 5.25 V | 2.7 V to 5.25 V | 2.7 V to 5.25 V | 2.2 V to 5.5 V |
| Enable Pin | Yes | Yes | No | Yes | No |
| Automotive Grade | No (TLV3801-Q1 variant available) | Yes (AEC-Q100) | No | No | Yes (AEC-Q100) |
Key Differentiators
- Fastest delay in footprint family (vs TLV3501QDSGRQ1)
- Automotive-qualified drop-in variant (vs TLV3801QDSGRQ1)
- Enable pin for power gating (vs TLV3811)
Design Notes
Terminate the LVDS output pair with 100 ohm differential impedance at the receiver end of a controlled-impedance (100-ohm differential) pair. Keep the pair short and length-matched; at 3 GHz toggle rates, stubs longer than a few millimeters cause reflections. Decouple VCC with 0.1 uF ceramic capacitors placed within 2 mm of the supply pins, per the TI TLV3801 datasheet layout section.
For split-supply operation (Β±1.35 V to Β±2.625 V), connect the GND/VEE pin to the negative rail and reference inputs to the 0 V system ground. The enable pin can sequence this comparator after upstream rails in multi-rail systems - hold EN low until input common-mode is valid to prevent false output transitions during power-up.
The DSG package exposes a thermal pad under the device that must be soldered to the ground plane - omitting the pad connection degrades both thermal performance and the LVDS output return path. Also note the TLV3811C variant lacks split-supply input support discussed in TI E2E forums; confirm the specific family member's input range against the 34-page datasheet before finalizing biasing.
Use the TLV3801EVM as a layout reference: it provides timing-optimized measurement options. On your PCB, place the comparator close to the photodiode/TIA or line receiver, keep the analog input traces away from the LVDS outputs to avoid output-to-input coupling, and use solid ground planes beneath both input and output routing for return-current continuity.
Compliance Information
Standard TLV3801 industrial grade; the TLV3801QDSGRQ1 variant is AEC-Q100 qualified per TI product page. Environmental compliance details not present in provided data.
