HCF4093BE - Quad 2-Input NAND Schmitt Trigger | STMicroelectronics
料号： HCF4093BE ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0.55 | $0.55 |
| 10 | $0.48 | $4.80 |
| 100 | $0.38 | $38.00 |
| 500 | $0.31 | $155.00 |
| 1,000 | $0.26 | $260.00 |
HCF4093BE 概述
The Schmitt trigger is a comparator-style input stage with two distinct switching thresholds: a higher positive-going threshold (VP) and a lower negative-going threshold (VN). The difference between them (VH = VP - VN) is defined as the hysteresis voltage. This built-in hysteresis makes the part ideal for conditioning slow analog or mechanical signals (RC oscillators, switch debouncing, sensor pulses) directly into clean logic levels without external comparators.
The HCF4093 belongs to the 4000-series CMOS logic family, characterized by wide supply operation from 3 V to 18 V, low quiescent power consumption, and high noise immunity. Its four gates share common VDD and VSS pins. Each input is a standard CMOS inverter-style stage feeding a NAND tree, and outputs are buffered totem-pole drivers capable of sourcing/sinking typical 4000-series currents. As a CMOS part, all inputs include ESD-protection networks and should not be left floating.
Typical applications include waveform and pulse shaping, monostable and astable multivibrators, line receivers for noisy environments, simple RC and crystal oscillators, and debounce circuits for mechanical switches. Hysteresis prevents multiple triggering on bouncing or slowly rising edges, eliminating the need for external Schmitt-trigger comparator stages.
When designing with this device, observe standard CMOS handling: tie unused inputs to VDD or VSS (never leave them open) and place a 0.1 uF decoupling capacitor as close as possible to the VDD pin. Output drive capability is moderate (a few mA), so check fan-out when driving multiple loads or long traces.
直接替换替代料： HCF4093BE ——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：
HCF4093BEY
✅ 直接替换📋 参考替代料（不在目录中）
HCF4093B1
✅ 直接替换📋 参考替代料（不在目录中）
CD4093BE
✅ 直接替换📋 参考替代料（不在目录中）
CD4093BEE4
✅ 直接替换📋 参考替代料（不在目录中）
MC14093BDR2G
✅ 直接替换📋 参考替代料（不在目录中）
HEF4093BP
✅ 直接替换📋 参考替代料（不在目录中）
HCF4093BE 最大额定值与电气特性
| Logic Function | NAND Gate |
| Number of Gates | 4 |
| Number of Inputs per Gate | 2 |
| Input Type | Schmitt Trigger |
| 输出类型 | CMOS (Totem-Pole) |
| Logic Family | 4000 Series (HCF4093B) |
| Supply Voltage (VDD) | 3 V to 18 V |
| 工作温度 | -55 C to +125 C |
| 封装 | PDIP-14 |
| 安装类型 | Through-Hole |
HCF4093BE 引脚配置
| 引脚 1 | 1A — Gate 1 input A (Schmitt-trigger) |
| 引脚 2 | 1B — Gate 1 input B (Schmitt-trigger) |
| 引脚 3 | 1Y — Gate 1 output (NAND of A and B) |
| 引脚 4 | 2Y — Gate 2 output (NAND of A and B) |
| 引脚 5 | 2A — Gate 2 input A (Schmitt-trigger) |
| 引脚 6 | 2B — Gate 2 input B (Schmitt-trigger) |
| 引脚 7 | VSS — Ground (0 V) |
| 引脚 8 | 3A — Gate 3 input A (Schmitt-trigger) |
| 引脚 9 | 3B — Gate 3 input B (Schmitt-trigger) |
| 引脚 10 | 3Y — Gate 3 output (NAND of A and B) |
| 引脚 11 | 4Y — Gate 4 output (NAND of A and B) |
| 引脚 12 | 4A — Gate 4 input A (Schmitt-trigger) |
| 引脚 13 | 4B — Gate 4 input B (Schmitt-trigger) |
| 引脚 14 | VDD — Positive supply voltage (3 V to 18 V) |
典型应用
HCF4093BE 适用于 6 应用s: Switch Debounce Circuit, RC Astable Oscillator, Pulse Shaper / Line Receiver, Monostable Multivibrator, Square-Wave Inverter / Buffer, Simple Alarm / Sensor Front-End.
Switch Debounce Circuit
The HCF4093BE is a classic building block for mechanical switch debounce circuits because each Schmitt-trigger input has built-in hysteresis that suppresses contact bounce. Connect a momentary pushbutton through a 10 kohm pull-up to VDD and to one gate input, with the other input tied to VDD/2 via a resistor divider or to a known logic level; a 100 nF cap from the input to GND forms an RC low-pass filter that, together with the Schmitt thresholds (VP/VN per the STMicroelectronics datasheet), guarantees a single clean transition per press. Four independent gates on one chip debounce up to four buttons in the same 14-pin PDIP footprint, eliminating external comparators or dedicated debounce ASICs.
推荐
RC Astable Oscillator
The HCF4093BE is widely used as a low-cost RC astable (square-wave) oscillator by configuring one gate with an RC network on its input and feeding the output back to the second gate as a buffer. The Schmitt-trigger action converts the slow exponential charge/discharge of the RC network into a precise square wave whose frequency is set by R and C. Typical oscillation frequencies range from sub-Hz (with large RC) to several hundred kHz, and the part's 3 V to 18 V supply range (per ST datasheet) lets the same oscillator run on 5 V or 15 V rails with predictable thresholds.
推荐
Pulse Shaper / Line Receiver
The HCF4093BE works as a pulse shaper for long cable or sensor lines where edge quality degrades and noise may be picked up: each Schmitt-trigger input with hysteresis regenerates a clean, fast edge from a slow or noisy input. Place the HCF4093BE at the receiving end of a long cable or after a photodiode/PIR sensor front-end; its high noise margin and CMOS input thresholds (per the STMicroelectronics datasheet) reject common-mode noise while the hysteresis prevents multiple triggers on ringing edges, all in a single 14-pin PDIP that drops in anywhere on the signal-conditioning PCB.
推荐
Monostable Multivibrator
The HCF4093BE can be wired as a one-shot (monostable) multivibrator for pulse-width generation and missing-pulse detection in industrial control circuits. One gate plus an RC timing network produces a fixed-width output pulse on each input trigger, with the Schmitt input ensuring that retriggering during the timing capacitor discharge does not cause a fresh output transition. The 3 V to 18 V supply range (per ST datasheet) suits 5 V logic and 15 V industrial analog boards in the same PCB footprint, and four gates per IC allow up to four independent timing channels.
推荐
Square-Wave Inverter / Buffer
The HCF4093BE makes a robust square-wave inverter by tying one input to VDD (or VSS) and using the other as the signal input; the Schmitt hysteresis then produces a clean, sharp-edged output even from slow analog inputs. This is useful for converting open-collector/open-drain sensor signals to CMOS logic levels, or for buffering a low-amplitude analog oscillator into a rail-to-rail square wave. With four gates in one 14-pin PDIP package, the HCF4093BE handles up to four independent buffer or inverter channels on the same PCB footprint.
推荐
Simple Alarm / Sensor Front-End
The HCF4093BE is used in low-power alarm front-ends where a sensor (PIR, Reed, Hall) drives one Schmitt input and a second gate latches the alarm state for an MCU or piezo buzzer. The hysteresis ensures a single, clean trigger per event even when the sensor output is slow or noisy, while the wide 3-18 V VDD range (per ST datasheet) lets the same circuit run from a 9 V battery or a 12 V industrial rail. Four gates per chip handle sensor input, latch, oscillator for the buzzer, and an MCU interrupt line in a single 14-pin PDIP.
推荐
推荐产品汇总
工程参考数据： HCF4093BE ——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 | HCF4093BEY | HCF4093B1 | CD4093BE | MC14093BDR2G | HEF4093BP |
|---|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | Texas Instruments | onsemi | NXP Semiconductors |
| Package | PDIP-14 | PDIP-14 - same | PDIP-14 - same | PDIP-14 (N) - same footprint | PDIP-14 (or SOIC-14) - same PDIP option | PDIP-14 - same |
| Logic Function | Quad 2-Input NAND Schmitt Trigger | Quad 2-Input NAND Schmitt Trigger | Quad 2-Input NAND Schmitt Trigger | Quad 2-Input NAND Schmitt Trigger | Quad 2-Input NAND Schmitt Trigger | Quad 2-Input NAND Schmitt Trigger |
| Number of Gates | 4 | 4 | 4 | 4 | 4 | 4 |
| Supply Voltage (VDD) | 3 V to 18 V | 3 V to 18 V | 3 V to 18 V | 3 V to 18 V | 3 V to 18 V | 3 V to 18 V |
| Operating Temperature | -55 C to +125 C | -55 C to +125 C | -55 C to +125 C | -55 C to +125 C | -55 C to +125 C | -40 C to +85 C (typical) |
| Hysteresis Inputs | Yes (Schmitt Trigger) | Yes | Yes | Yes | Yes | Yes |
关键差异点
- Schmitt-trigger hysteresis on every input eliminates external comparator for debounce/oscillator use （对比 CD4011BE)
- Wide 3-18 V supply range supports 5 V, 9 V, 12 V, and 15 V rails without level translation （对比 74HC132)
- Mature, multi-sourced 4000-series die ensures broad availability and low cost （对比 Single-source specialty Schmitt-trigger ICs)
设计说明
Never leave HCF4093BE inputs floating. CMOS inputs draw negligible DC current but will float to undefined thresholds, causing excessive supply current and possible oscillation. Tie every unused input directly to VDD or VSS (or to the same signal as its companion gate input).
Place a 0.1 uF ceramic decoupling capacitor as close as possible to the VDD pin (pin 14) of the HCF4093BE, with a short trace to the ground pin. Although the part draws little quiescent power, output load transients can cause VDD ringing that disturbs the Schmitt thresholds.
Keep input traces short to preserve the Schmitt hysteresis behaviour of the HCF4093BE. Long traces act as antennas that couple noise into the input node, and once noise exceeds the VH hysteresis band the gate will re-trigger. Route noisy digital or switching signals away from the HCF4093BE inputs.
When using HCF4093BE as an RC oscillator, choose the timing resistor below ~1 Mohm to keep the input node away from leakage currents that could otherwise shift the duty cycle. Below 10 kohm, output-source impedance starts to load the timing capacitor and degrade frequency accuracy.
合规信息
Compliance status not explicitly stated in the verified web data; this page marks all compliance fields as 'unknown' pending datasheet verification. The 'BE' suffix is consistent with the standard lead-free DIP designation, while the 'BEY' suffix typically denotes a lead-finished variant. AEC-Q100 is not applicable for this 4000-series logic IC.
