SN74HCS86PWR - Quad 2-Input XOR Schmitt-Trigger Gate | TI
料号： SN74HCS86PWR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0.42 | $0.42 |
| 10 | $0.38 | $3.80 |
| 100 | $0.28 | $28.00 |
| 500 | $0.19 | $95.00 |
| 1,000 | $0.13 | $130.00 |
SN74HCS86PWR 概述
A logic gate is the fundamental building block of digital electronics, performing Boolean operations on binary inputs. The XOR gate outputs a high level only when an odd number of its inputs is high, making it essential for adders, parity generators and checkers, comparators, and programmable inverters. The SN74HCS86 belongs to the TI HCS family, which pairs CMOS low static power with Schmitt-trigger inputs for superior noise immunity - a drop-in upgrade path for the classic 74HC86.
Key features include the wide 2V to 6V operating range, Schmitt-trigger inputs with hysteresis (typically around 0.5V at a 5V supply), CMOS technology for near-zero quiescent current, and balanced output drive. Per the TI datasheet, the device can drive loads up to 50 pF while meeting all datasheet specifications; larger capacitive loads are not recommended.
Technically, the CMOS architecture provides high noise margins and negligible static current, while the Schmitt inputs use internal positive feedback to create hysteresis. This makes the part tolerant of inputs from mechanical switches, quadrature encoders, RC oscillators, and long wires with slow rise times - conditions that would cause a standard HC86 input to oscillate or multi-trigger.
Typical applications include signal conditioning of noisy sensor or switch inputs, parity generation in serial communication links, crystal and RC oscillator circuits, frequency doubling (XOR with a delayed copy of itself), and digital comparator functions in industrial control, instrumentation, and automotive modules.
Design tip: tie all unused inputs to a defined logic level (GND or VCC) to prevent floating nodes, and keep total capacitive load per output at or below 50 pF; add a buffer such as SN74LVC244A if heavier loads are required. Pricing references below are as of 2026-08-30.
直接替换替代料： SN74HCS86PWR ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： SN74HCS86PWR （相同外形与封装尺寸） ——差异在于 Input Type, Logic Function, Operating Temperature, Package.
快速对比工具——选择替代料号进行并排对比：
SN74HCS86QPWRQ1
✅ 直接替换✓ 有现货
$0.17 / 个
查看数据手册 →SN74HC86PWR
⚡ 相同封装 ⚠️ 规格未核验📋 参考替代料（不在目录中）
CD74HC86PWR
⚡ 相同封装 ⚠️ 规格未核验📋 参考替代料（不在目录中）
SN74LVC86APWR
⚡ 相同封装 ⚠️ 规格未核验📋 参考替代料（不在目录中）
74HC86PW,118
⚡ 相同封装 ⚠️ 规格未核验📋 参考替代料（不在目录中）
SN74HCS86PWR 最大额定值与电气特性
| Logic Function | XOR (Exclusive OR) |
| Number of Gates | 4 |
| Inputs per Gate | 2 |
| Input Type | Schmitt Trigger |
| Supply Voltage Range | 2 V to 6 V |
| Technology Family | HCS (CMOS with Schmitt-trigger inputs) |
| 工作温度 | -40C to +125C |
| Output Drive Capability | Up to 50 pF load per output |
| 封装 | TSSOP (PW), 14 pins |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
SN74HCS86PWR 引脚配置
| 引脚 1 | 1A — Gate 1 input A |
| 引脚 2 | 1B — Gate 1 input B |
| 引脚 3 | 1Y — Gate 1 output (1A XOR 1B) |
| 引脚 4 | 2A — Gate 2 input A |
| 引脚 5 | 2B — Gate 2 input B |
| 引脚 6 | 2Y — Gate 2 output (2A XOR 2B) |
| 引脚 7 | GND — Ground |
| 引脚 8 | 3Y — Gate 3 output (3A XOR 3B) |
| 引脚 9 | 3A — Gate 3 input A |
| 引脚 10 | 3B — Gate 3 input B |
| 引脚 11 | 4Y — Gate 4 output (4A XOR 4B) |
| 引脚 12 | 4A — Gate 4 input A |
| 引脚 13 | 4B — Gate 4 input B |
| 引脚 14 | VCC — Power supply, 2V to 6V |
典型应用
SN74HCS86PWR 适用于 6 应用s: Switch and Sensor Signal Conditioning, Quadrature Encoder Interfacing, Parity Generation and Checking, RC and Crystal Oscillator Circuits, Frequency Doubling and Edge Detection, Digital Comparators and Control Logic.
Switch and Sensor Signal Conditioning
Mechanical switches, reed relays, and analog-comparator outputs produce slow, bouncy, or noisy edges. The SN74HCS86's Schmitt-trigger inputs provide roughly 0.5V hysteresis at 5V, squaring up these signals into clean CMOS logic levels without external comparators. Each XOR gate also enables edge/transition detection when one input is fed a delayed copy of the signal. With a 2V-6V supply range and -40C to +125C rating, it integrates directly into 3.3V and 5V industrial front ends, reducing BOM count and improving noise margins in factory-floor environments.
推荐
Quadrature Encoder Interfacing
Quadrature encoders from motors and knobs output A/B channels with slow edges over long cables. The SN74HCS86 cleans both channels with its Schmitt-trigger inputs, then XOR combinations of A, B and delayed copies yield direction and count pulses. Its 2V-6V range covers both 3.3V and 5V encoder supplies, and 50 pF output drive connects directly to MCU timer inputs. The TSSOP-14 package fits compact motor-control boards, and CMOS static current keeps idle power negligible in battery-powered hand-held instruments.
推荐
Parity Generation and Checking
Serial links and memory buses use parity to detect single-bit errors. Cascading the four XOR gates of the SN74HCS86 computes odd/even parity over data words: XOR of all bits yields a 1 when the count of ones is odd. Schmitt inputs make the circuit robust to ringing on board interconnect, while the CMOS core adds near-zero static power. The 2V-6V range spans 3.3V and 5V logic domains, allowing level-tolerant parity trees in mixed-voltage systems; 50 pF drive covers typical fanout to downstream latches or MCU pins.
推荐
RC and Crystal Oscillator Circuits
One XOR gate wired with an RC network forms a relaxation oscillator, and the Schmitt-trigger inputs are exactly what such circuits need to snap cleanly between thresholds. The SN74HCS86's hysteresis (about 0.5V at 5V) sets a well-defined oscillation window, while CMOS symmetry keeps duty cycle reasonable. Remaining gates serve as buffering or frequency doubling (XOR with its own delayed copy yields a pulse on every edge). Operating from 2V-6V, the same design scales across battery and logic supplies, and the tiny TSSOP-14 saves board area.
推荐
Frequency Doubling and Edge Detection
XOR of a clock with a delayed copy of itself produces a pulse on every rising and falling edge, doubling effective frequency. The SN74HCS86 excels here because its Schmitt inputs accept the RC-delayed edges without oscillating, a common failure mode of standard HC86 implementations. With four gates per package, one device provides delay, XOR, and buffering stages. Propagation timing stays stable across the 2V-6V supply and -40C to +125C range, suiting clock-multiplication stubs in instrumentation and motor-drive control cards.
推荐
Digital Comparators and Control Logic
XOR outputs go high only when corresponding bits differ, making the SN74HCS86 the core of magnitude/equality comparators: XOR bit pairs, then OR/NOR the results. Its Schmitt inputs tolerate long backplane or cable interconnects, and the -40C to +125C rating suits unconditioned industrial and automotive-adjacent modules (use the Q1 variant for full AEC-Q100 programs). The 2V-6V range bridges 3.3V sensors with 5V relay-drive logic, and near-zero static current keeps standby draw minimal in always-on monitoring nodes.
推荐
推荐产品汇总
工程参考数据： SN74HCS86PWR ——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 | SN74HCS86QPWRQ1 | SN74HC86PWR | SN74LVC86APWR | 74HC86PW,118 |
|---|---|---|---|---|---|
| Package | TSSOP-14 (PW) | TSSOP-14 (PW) - same | TSSOP-14 (PW) - same | TSSOP-14 (PW) - same | TSSOP-14 (PW) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | NXP Semiconductors |
| Logic Function | Quad 2-input XOR | Quad 2-input XOR | Quad 2-input XOR | Quad 2-input XOR | Quad 2-input XOR |
| Schmitt-Trigger Inputs | Yes | Yes | No | No | No |
| Supply Voltage | 2 V to 6 V | 2 V to 6 V | 2 V to 6 V | 1.65 V to 3.3 V | 2 V to 6 V |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
| Automotive Grade (AEC-Q100) | No (standard) | Yes (Q1) | No | No | No |
关键差异点
- Schmitt-trigger inputs with hysteresis on all 8 inputs （对比 SN74HC86PWR)
- Wide 2V-6V supply range covering 3.3V and 5V systems （对比 SN74LVC86APWR)
- Automotive-qualified sibling available （对比 SN74HCS86QPWRQ1)
设计说明
Tie all unused inputs to GND or VCC - floating CMOS inputs cause oscillation and excess static current. The Schmitt inputs of the SN74HCS86 tolerate slow edges, but unused gate outputs should still be left open or used deliberately. Never leave an output shorted to a rail.
Per the TI datasheet, keep total capacitive load at or below 50 pF per output to meet timing and drive specifications. For heavier loads or long traces, insert a buffer such as the SN74LVC244A. The Schmitt inputs tolerate rise times that would multi-trigger a standard HC86, making them ideal for switch and cable inputs.
Decouple VCC (pin 14) with a 100 nF ceramic capacitor placed within a few millimeters of the pin, plus bulk capacitance shared per board. Although HCS static current is negligible, switching all four gates simultaneously produces dynamic current spikes; a solid ground return (pin 7) minimizes ground bounce in mixed-logic layouts.
合规信息
RoHS compliant per distributor listings; use SN74HCS86QPWRQ1 for AEC-Q100 qualified automotive applications.
