TLV3502 - 4.5ns Rail-to-Rail High-Speed Comparator | TI
MPN: TLV3502 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.65 | $16.50 |
| 100 | $1.32 | $132.00 |
| 500 | $1.12 | $560.00 |
| 1,000 | $0.98 | $980.00 |
Drop-in alternatives for TLV3502 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:
TLV3502AIDR
β Drop-Inπ Reference alternative (not in catalog)
TLV3502AIDCNT
β Drop-Inπ Reference alternative (not in catalog)
TLV3502-Q1
β Drop-Inπ Reference alternative (not in catalog)
TLV3501
β‘ Same Packageπ Reference alternative (not in catalog)
LT1720
β Drop-Inπ Reference alternative (not in catalog)
MAX9020
β Drop-Inπ Reference alternative (not in catalog)
TLV3502 Maximum Ratings & Electrical Characteristics
| Number of Channels | 2 |
| Propagation Delay | 4.5 ns |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Supply Current (per channel) | 3.2 mA |
| Input Type | Rail-to-Rail |
| Output Type | Push-Pull, Rail-to-Rail, CMOS, TTL |
| Input Bias Current | 2 pA (typical) |
| Input Offset Voltage | 1 mV (typical) |
| Operating Temperature Range | -40Β°C to +125Β°C |
| Package Type | 8-SOIC, 8-SOT-23 |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Output Current | 8 mA (sink/source) |
| Common-Mode Input Range | 0 V to VCC |
| Shutdown Function | No (dual version) |
TLV3502 Pin Configuration
| Pin 1 | OUTA β Output of comparator A |
| Pin 2 | INA- β Inverting input of comparator A |
| Pin 3 | INA+ β Non-inverting input of comparator A |
| Pin 4 | GND β Ground |
| Pin 5 | INB+ β Non-inverting input of comparator B |
| Pin 6 | INB- β Inverting input of comparator B |
| Pin 7 | OUTB β Output of comparator B |
| Pin 8 | VCC β Positive supply voltage |
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
TLV3502 is suitable for 6 applications: Zero-Crossing Detector, Window Comparator, High-Speed Signal Conditioning, Battery-Powered Portable Devices, Automotive Electronics, Industrial Control Systems.
Zero-Crossing Detector
The TLV3502's 4.5ns propagation delay and rail-to-rail input make it ideal for zero-crossing detection in AC power control and phase-locked loops. The fast response ensures accurate timing, while the low supply current (3.2mA) is suitable for battery-powered systems. The push-pull output directly drives digital logic, simplifying interface. In a typical circuit, the input is connected to the AC signal via a resistor divider, and the output toggles at each zero crossing, enabling precise phase control in dimmers and motor controllers.
Recommended
Window Comparator
The TLV3502's dual channels allow building a window comparator with two thresholds. The rail-to-rail input range (0V to VCC) enables monitoring signals near the supply rails. The fast 4.5ns delay ensures quick response to out-of-range conditions, making it suitable for over/under-voltage protection in power supplies. The push-pull outputs can directly drive an OR gate to generate an alarm signal. With a supply current of only 3.2mA per channel, it is efficient for always-on monitoring circuits.
Recommended
High-Speed Signal Conditioning
In test and measurement equipment, the TLV3502 is used to condition high-speed analog signals into digital pulses. Its 4.5ns propagation delay allows capturing fast transients, while the CMOS input with 2pA bias current minimizes loading on the signal source. The rail-to-rail output ensures compatibility with FPGA or microcontroller inputs. The low supply current is beneficial for portable instruments. The device can be used in pulse-width modulation (PWM) demodulation and frequency-to-voltage conversion circuits.
Recommended
Battery-Powered Portable Devices
The TLV3502's low supply current (3.2mA per channel) and wide supply voltage range (2.7V to 5.5V) make it ideal for battery-powered devices. It can operate directly from a 3.3V or 5V rail without additional regulation. The small SOT-23-8 package saves board space in compact designs. Applications include battery voltage monitoring, low-battery detection, and sensor threshold detection. The rail-to-rail input allows monitoring the battery voltage directly, and the push-pull output can drive an LED or microcontroller interrupt.
Recommended
Automotive Electronics
The TLV3502-Q1 is AEC-Q100 qualified for automotive applications. Its fast propagation delay (4.5ns) is suitable for engine control, transmission, and safety systems. The wide temperature range (-40Β°C to +125Β°C) ensures reliable operation in harsh environments. The rail-to-rail input and output allow interfacing with sensors and microcontrollers. Applications include window comparators for sensor monitoring, zero-crossing detection for AC motor control, and high-speed signal conditioning in infotainment systems.
Recommended
Industrial Control Systems
In industrial automation, the TLV3502 is used for high-speed threshold detection and signal conditioning. Its 4.5ns delay enables fast response in safety interlocks and motor control. The push-pull output can drive PLC inputs directly. The wide supply range allows operation from 24V industrial rails with a simple resistor divider. The low input bias current (2pA) minimizes errors when interfacing with high-impedance sensors. The device is available in SOIC-8 for easy prototyping and SOT-23-8 for space-constrained PCBs.
Recommended
Recommended Products Summary
Engineering reference data for TLV3502 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TLV3502AIDR | TLV3502AIDCNT | TLV3502-Q1 | LT1720 | MAX9020 |
|---|---|---|---|---|---|---|
| Package | 8-SOIC, 8-SOT-23 | 8-SOIC | 8-SOT-23 | 8-SOIC | 8-SOIC | 8-SOIC |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices | Maxim Integrated |
| Propagation Delay | 4.5 ns | 4.5 ns | 4.5 ns | 4.5 ns | 4.5 ns | 5 ns |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 6 V | 2.7 V to 5.5 V |
| Supply Current (per channel) | 3.2 mA | 3.2 mA | 3.2 mA | 3.2 mA | 4 mA | 1.5 mA |
| Input Bias Current | 2 pA | 2 pA | 2 pA | 2 pA | 2 Β΅A | 1 pA |
| Output Type | Push-Pull, Rail-to-Rail | Push-Pull, Rail-to-Rail | Push-Pull, Rail-to-Rail | Push-Pull, Rail-to-Rail | Push-Pull | Push-Pull |
| Automotive Grade | No | No | No | Yes (AEC-Q100) | No | No |
Key Differentiators
- Ultra-low input bias current of 2pA (vs LT1720)
- Dual channels in one package (vs TLV3501)
- Automotive grade option available (vs LT1720)
Design Notes
Bypass the VCC pin with a 0.1Β΅F ceramic capacitor placed as close as possible to the pin. Additionally, a 10Β΅F bulk capacitor is recommended if the supply is shared with other high-current devices. This minimizes power supply noise that could affect the comparator's switching threshold.
Keep input traces short and shielded to avoid noise pickup, especially in high-speed applications. Use ground planes to reduce parasitic inductance. For the SOT-23-8 package, ensure adequate copper area for thermal dissipation, though the device's low power consumption typically does not require special thermal management.
Do not exceed the absolute maximum supply voltage of 6V. Ensure the input voltages stay within the common-mode range (0V to VCC) to avoid output errors. The push-pull output can drive capacitive loads, but excessive capacitance may cause ringing; a series resistor of 50-100Ξ© can dampen oscillations.
Compliance Information
RoHS compliant per TI product page. TLV3502-Q1 is AEC-Q100 qualified.
