TLV3201AIDCKR - 40ns microPOWER Comparator, SC-70-5 | Texas Instruments
料号： TLV3201AIDCKR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $1.42 | $1.42 |
| 10 | $1.15 | $11.50 |
| 100 | $0.82 | $82.00 |
| 500 | $0.61 | $305.00 |
| 1,000 | $0.47 | $470.00 |
TLV3201AIDCKR 概述
A comparator is an analog circuit building block that compares two input voltages and forces its output to one of two logic states based on which input is larger. The TLV3201 belongs to the high-speed, low-power comparator sub-category of analog comparators, which sits within amplifiers/comparators -> analog ICs -> signal conditioning -> power management. This combination of 40 ns propagation delay and 40 µA supply current places the part at the high-speed / low-power boundary, making it attractive for battery-powered systems that also need fast overvoltage detection or threshold-crossing response.
Key features include 40 ns propagation delay (typical), 40 µA quiescent current, rail-to-rail input common-mode range that can swing 200 mV below the negative rail, push-pull CMOS output capable of driving typical CMOS or TTL loads directly, internal hysteresis for clean switching in noisy environments, and an industrial -40 °C to +125 °C operating temperature range. The small SC-70-5 (2.0 × 2.1 mm) footprint enables compact designs for space-constrained applications.
The TLV3201 is built on a CMOS process with a precision input stage that achieves 1 mV input offset while maintaining microamp quiescent current. The push-pull output eliminates the static current draw of an open-drain pull-up resistor, improving efficiency in battery-powered systems. The wide 2.7 V to 5.5 V supply range supports both 3.3 V and 5 V rails commonly used in industrial and consumer designs.
Typical applications include battery management threshold detection, zero-crossing detectors for line-powered systems, oscillator circuits, window comparators, IR receiver signal conditioning, and general-purpose analog monitoring. The part is particularly well suited for portable and handheld equipment where the 40 µA supply current extends battery life while the 40 ns speed supports fast fault response.
When designing with this comparator, account for input source impedance and bias current to limit offset-induced errors. For high-speed switching above 100 kHz, add local supply decoupling (0.1 µF ceramic in parallel with 1 µF bulk) within 5 mm of the VCC pin. The internal 6 mV hysteresis is sufficient for most noisy environments, but for very slow-moving inputs add external positive feedback to widen the hysteresis band.
This page synthesizes distributor pricing, drop-in alternatives in the same SC-70-5 footprint, and practical design notes not found in the manufacturer datasheet.
直接替换替代料： TLV3201AIDCKR ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
TLV3201AIDCKT
✅ 直接替换📋 参考替代料（不在目录中）
TLV3201AIDCKRG4
✅ 直接替换📋 参考替代料（不在目录中）
TLV3201AQDCKRQ1
✅ 直接替换📋 参考替代料（不在目录中）
MCP6561T-E/OTVAO
✅ 直接替换📋 参考替代料（不在目录中）
NCS2200SQ3T2G
✅ 直接替换📋 参考替代料（不在目录中）
TLV3201AIDCKR 最大额定值与电气特性
| Comparator Type | General Purpose, Push-Pull Output |
| Number of Channels | 1 |
| Propagation Delay (tpd) | 40 ns (typical) |
| Quiescent Supply Current (Iq) | 40 µA (typical) |
| Supply Voltage Range (VCC) | 2.7 V to 5.5 V |
| Input Offset Voltage (Vos) | 1 mV (typical) |
| Input Common-Mode Range | Rail-to-Rail (extends 200 mV below GND) |
| Output Stage | Push-Pull CMOS |
| Internal Hysteresis | 6 mV (typical) |
| 工作温度范围 | -40 °C to +125 °C |
| 封装 | SC-70-5 (DCK), 2.0 × 2.1 mm |
| 安装类型 | Surface Mount |
| MSL 等级 | 1 (Unlimited) |
| Lead-Free / RoHS | Yes / Compliant |
TLV3201AIDCKR 引脚配置
| 引脚 1 | OUT — Push-pull comparator output |
| 引脚 2 | GND — Ground / negative supply |
| 引脚 3 | IN- — Inverting input |
| 引脚 4 | IN+ — Non-inverting input |
| 引脚 5 | VCC — Positive supply (2.7 V to 5.5 V) |
典型应用
TLV3201AIDCKR 适用于 6 应用s: Battery Voltage Monitoring, Zero-Crossing Detector, Relaxation Oscillator, Window Comparator for Over/Under-Voltage Detection, IR Receiver Signal Conditioning, Industrial Sensor Threshold Detection.
Battery Voltage Monitoring
The TLV3201AIDCKR is well matched to single-cell Li-ion and multi-cell battery monitor circuits because it draws only 40 µA quiescent current while still delivering 40 ns propagation delay for fast over-voltage or under-voltage cutoff. Place the part between the battery sense divider and a microcontroller ADC-trigger or MOSFET gate driver, with the rail-to-rail input accepting cell voltages from 0 to 5.5 V without level shifting. The wide -40 °C to +125 °C operating range supports cold-weather LiFePO4 packs and high-temperature automotive environments, while the SC-70-5 footprint keeps the monitor circuit under 6 mm².
推荐
Zero-Crossing Detector
The TLV3201AIDCKR detects AC line zero-crossings for triac dimmers, solid-state relays, and synchronous rectifiers by comparing an attenuated mains waveform against ground. The 40 ns propagation delay keeps phase-error below 1 µs at 50/60 Hz, while the 40 µA Iq adds negligible standby drain to always-on appliances. The rail-to-rail input tolerates the rectified 3.3 V or 5 V scaled-down mains signal across the full common-mode range without clipping near either supply rail.
推荐
Relaxation Oscillator
The TLV3201AIDCKR works as the active element in low-power relaxation oscillators up to ~1 MHz when combined with an external resistor and capacitor. The 40 µA quiescent current and 40 ns propagation delay produce stable, low-jitter square waves suitable for clocking low-speed peripherals, blink indicators, or simple PWM modulation. The push-pull output directly drives CMOS loads without an external pull-up, simplifying the oscillator to just two passive components plus the IC.
推荐
Window Comparator for Over/Under-Voltage Detection
Two TLV3201AIDCKR comparators (or one TLV3202 dual) form a window comparator that asserts a fault when a monitored rail drifts outside an acceptable band, ideal for power-rail supervision in industrial PLCs and server PSUs. The 1 mV input offset enables precise threshold setting with low-value resistor dividers, and the 40 ns response isolates downstream FETs within microseconds of a fault. The push-pull outputs wire-OR cleanly into a single MCU interrupt input with no external logic.
推荐
IR Receiver Signal Conditioning
The TLV3201AIDCKR shapes the output of an IR photodiode preamp into a clean logic-level stream for UART/IR-protocol decoding in remote controls and optical data links. The 40 ns propagation delay supports 38 kHz and 56 kHz carrier demodulation, while the 40 µA Iq lets the receiver stay always-on in battery-powered remote handsets. The internal 6 mV hysteresis suppresses ambient-light noise without requiring an external Schmitt trigger.
推荐
Industrial Sensor Threshold Detection
The TLV3201AIDCKR converts analog sensor outputs (thermistor, strain gauge, optical encoder) into a digital logic signal for PLC digital inputs or industrial counter modules. The wide 2.7 V to 5.5 V supply and -40 °C to +125 °C range cover factory-floor temperature swings, while the rail-to-rail input accepts 0-5 V transducer signals directly. The push-pull CMOS output drives 24 V opto-isolated inputs through a simple series resistor on the field side.
推荐
推荐产品汇总
工程参考数据： TLV3201AIDCKR ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | TLV3201AIDCKT | TLV3201AIDCKRG4 | TLV3201AQDCKRQ1 | MCP6561T-E/OTVAO | NCS2200SQ3T2G |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Microchip Technology | onsemi |
| Package | SC-70-5 (DCK) | SC-70-5 (DCK) - same | SC-70-5 (DCK) - same | SC-70-5 (DCK) - same | SOT-23-5 - different footprint, verify pinout | SC-70-5 - same |
| Output Type | Push-Pull CMOS | Push-Pull CMOS | Push-Pull CMOS | Push-Pull CMOS | Push-Pull CMOS | Push-Pull CMOS |
| Automotive Grade (AEC-Q100) | No | No | No | Yes | No | No |
| RoHS / Lead-Free | Yes | Yes | Yes (G4 green) | Yes | Yes | Yes |
关键差异点
- Single-channel 40 ns comparator in SC-70-5 (smallest TI high-speed comparator footprint) （对比 TLV3202 (dual-channel in SOIC-8/VSSOP-8))
- Automotive-grade variant in same SC-70-5 footprint （对比 TLV3201AQDCKRQ1)
- Push-pull CMOS output (no external pull-up required) （对比 MCP6561T-E/OTVAO (Microchip))
设计说明
Estimated: at VCC = 5 V and 40 µA quiescent current, the TLV3201AIDCKR draws approximately 0.2 mW of quiescent power. For battery-powered designs, this means a CR2032 cell (220 mAh) can power the comparator continuously for many years. Add a 0.1 µF ceramic decoupling capacitor within 5 mm of the VCC pin to suppress supply noise that could couple into the input stage and increase effective input offset.
Route the high-impedance IN+ and IN- traces as short as possible and guard them with a ground pour to minimize stray pickup and leakage. Keep trace-trace capacitance below 5 pF to preserve the 40 ns propagation delay at high source impedances. Avoid routing input traces parallel to the OUT trace to prevent output-to-input coupling that could cause oscillation in high-gain configurations.
Do not drive the input pins above VCC or below GND by more than 0.3 V without current-limiting series resistance; the input ESD diodes can forward-bias and inject parasitic currents that shift the threshold. The internal 6 mV hysteresis helps reject small noise spikes but is insufficient for very slow-moving (sub-Hz) signals - add external positive feedback resistor from OUT to IN+ if the input slew rate drops below 1 mV/ms.
合规信息
RoHS and REACH compliant per TI product page. Standard part is not AEC-Q100 qualified; choose TLV3201AQDCKRQ1 for AEC-Q100 Grade 1 automotive applications. Lead-free and halogen-free per TI material declarations.
