TS556CN - Dual 2.7MHz CMOS Timer | STMicroelectronics
MPN： TS556CN ✓ 啟用中TS556CN 概覽
A CMOS timer is a programmable time-delay and oscillator integrated circuit. It belongs to the timer/oscillator category, within clock and timing ICs and broader semiconductor devices. Each timer section uses external resistors and capacitors to set delay or oscillation behavior, making this device useful where conventional 555-type timing, pulse generation, delay, and repetitive switching are required without a microcontroller.
Key verified attributes include dual-timer construction, operation from 2 V to 16 V, a high maximum astable frequency of 2.7 MHz, and pin-to-pin and functional compatibility with bipolar NE556 devices. Reduced supply-current spikes during output transitions can permit lower decoupling capacitance than a conventional bipolar implementation. The stated 180 µA typical current at 3 V supports battery-conscious designs, although load and switching conditions must be checked against the datasheet.
The TS556CN uses CMOS circuitry to combine low quiescent consumption with higher timer frequency than the bipolar NE556 comparison cited in the search data. That comparison reports 2.7 MHz maximum frequency for TS556 versus 0.1 MHz for NE556. However, actual operating frequency depends on timing resistors, capacitors, propagation delays, output loading, and supply voltage, so high-frequency layouts require short traces and careful grounding.
Typical uses include LED and lamp flashers, pulse generators, delay stages, debounce or retriggerable timing networks, simple oscillators, industrial control timers, and low-power instrumentation. The 14-DIP through-hole package favors prototypes, educational designs, repairable assemblies, and human-built electronics where a socketed or perforated-board implementation is practical.
Design with the two timer sections independently unless datasheet pin behavior explicitly permits shared connections. Place timing components close to their associated pins, bypass the supply near the device, and account for output-current limits and threshold tolerances. Because the web evidence provides conflicting voltage-range wording, use the 2 V to 16 V range for this listing and verify absolute maximum and operating limits before releasing production hardware.
This page combines verified distributor and datasheet findings, package-aware replacement analysis, and practical timer-circuit guidance. It also distinguishes documented TS556CN data from specifications that were not supplied, avoiding unsupported claims about pricing, lifecycle, compliance, or exact pin assignments.
直接替換替代品，適用於 TS556CN — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： TS556CN （相同外形與佔位） — 差異在於 Package, Timer Configuration, Mounting Type, Typical Supply Current at 5 V.
TS556ID
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →TS556CD
✅ 直接替換聯絡詢價
查看資料表 →NE556P
✅ 直接替換📋 參考替代品（不在目錄中）
TS556CN 規格
| Timer Configuration | Dual timer |
| Timer Type | 555 Type, Timer/Oscillator |
| Technology | CMOS |
| Supply Voltage Range | 2 V to 16 V |
| Maximum Astable Frequency | 2.7 MHz |
| Typical Supply Current | 180 µA at VCC = 3 V |
| Operating Modes | Monostable and astable |
| NE556 Compatibility | Pin-to-pin and functionally compatible |
| Output Transition Behavior | Reduced supply-current spikes |
| 封裝 | 14-DIP, 0.300 inch (7.62 mm) width |
| 腳位數 | 14 pins |
| 安裝類型 | Through-hole |
| 工作溫度範圍 | 0°C to 70°C |
| Supply Packaging | Tube |
TS556CN 14-dip, 0.300 inch (7.62 mm) width 腳位配置指南
TS556CN（14-dip, 0.300 inch (7.62 mm) width 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： TS556CN.
請參閱 資料表 以查看完整腳位配置。
典型應用
TS556CN 適用於 6 應用s: Dual Delay and Pulse Generator, Astable Oscillator and Tone Generator, LED Flasher and Indicator Driver, Industrial Debounce and Retrigger Control, Low-Power Instrumentation Timing, Switch-Mode and Power-Control Delay.
Dual Delay and Pulse Generator
The TS556CN fits delay-and-pulse designs because it contains two 555-compatible timer sections and supports monostable operation from a verified 2 V to 16 V supply. Each section can establish its own delay using external resistance and capacitance, allowing one IC to replace two discrete timer packages in a prototype or industrial control board. The 180 µA typical supply current at 3 V also suits low-duty-cycle battery-powered equipment. Verify trigger polarity, output timing tolerance, and output-load limits in the manufacturer datasheet before production.
推薦
Astable Oscillator and Tone Generator
The TS556CN is suitable for astable oscillator or tone-generation circuits because its verified maximum astable frequency is 2.7 MHz. One timer can generate a repetitive waveform while the second can provide modulation, gating, or a separate delayed function. At lower audible or instrumentation frequencies, external resistor and capacitor tolerances normally dominate accuracy. For operation near the device limit, keep timing nodes compact, provide a low-impedance supply bypass, and confirm timing and output behavior from the datasheet.
推薦
LED Flasher and Indicator Driver
The dual TS556CN can implement two independent flashing rates or an alternating LED indication circuit, reducing the IC count compared with two single timers. Its low-power CMOS operation is useful in battery-powered indicators, while the verified 14-DIP package is easy to prototype and socket. The LED current source must be sized so total demand remains within the applicable output rating; the provided evidence does not state that limit. Include a current-limiting resistor and verify polarity at startup.
推薦
Industrial Debounce and Retrigger Control
The TS556CN can form a monostable debounce or retriggerable control stage for switches, sensor interfaces, and actuator timing. Two independent timer sections allow separate debounce and output-delay functions while preserving a conventional 555-style architecture. The CMOS device's 180 µA typical consumption at 3 V helps limit idle drain in compact control equipment. Validate switch bounce duration, trigger recovery time, and output load; the supplied data does not define these timing thresholds.
推薦
Low-Power Instrumentation Timing
The TS556CN is suitable for low-power test and measurement modules that need one-shot delays, sample windows, or repetitive triggers without a microcontroller. Its dual timer arrangement reduces component count, while the 2 V to 16 V listed range permits integration across multiple low-voltage rails. The through-hole 14-DIP package favors instrument prototypes and repairable assemblies. At the verified 2.7 MHz maximum, use short timing paths and stable grounding to minimize parasitic effects and supply sensitivity.
推薦
Switch-Mode and Power-Control Delay
The TS556CN can supervise start-up sequencing, create a controlled enable delay, or inject a repeatable blanking interval in a power-control circuit. Its low quiescent demand is useful when the control circuit spends substantial time idle, and the dual architecture can coordinate two timing events. The exact output rating and propagation behavior were not supplied, so use the datasheet to verify suitability for gate-drive or power-stage loads. Keep high-current switching loops separate from timer and reference nodes.
推薦
推薦產品摘要
工程參考資料，適用於 TS556CN — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | TS556ID | TS556CD | NE556P |
|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | Texas Instruments |
| Package | 14-DIP, 0.300 inch (7.62 mm) width | DIP-14 | DIP-14 | DIP-14 |
| Timer Configuration | Dual timer | Dual timer | Dual timer | Dual timer |
| Technology | CMOS | CMOS | CMOS | Bipolar |
主要差異化特點
- Higher maximum astable frequency than the bipolar reference cited in the supplied family comparison (對比NE556P)
- Lower typical power consumption for low-duty-cycle designs (對比NE556P)
- Reduced switching-related supply-current spikes (對比NE556P)
- Same-family commercial-grade ordering option (對比TS556ID)
設計說明
The verified TS556CN supply range for this record is 2 V to 16 V, but secondary family data mentions 18 V. Do not design to 18 V without checking the exact manufacturer datasheet and absolute-maximum table. Place a local supply bypass close to the device, account for the reduced transition-current spikes documented for TS556, and verify that both timer sections and all output loads remain within the selected supply and output-current limits.
Keep each timing resistor and capacitor close to the pins belonging to its timer section. At frequencies approaching the verified 2.7 MHz maximum, long traces add capacitance and can shift oscillation or monostable delay. Use a compact ground return, avoid routing timing nodes beside fast switching-current paths, and keep the supply bypass path short. For the 14-DIP implementation, maintain adequate spacing between adjacent through-holes according to the PCB fabrication rules.
A dual timer does not automatically mean both sections share one timing network. Define and validate both astable or monostable configurations separately, including trigger thresholds, discharge paths, and output loading. Do not assume that every NE556 circuit transfers without review: compare the exact pin diagram, supply limits, timing tolerances, output-current behavior, and maximum operating frequency. A shared ground and supply are common, but timer-specific external networks should remain isolated to prevent unintended interaction.
合規資訊
The supplied data does not state RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive qualification status. The TS556CN is a commercial-temperature through-hole timer, so AEC-Q100 is treated as not applicable rather than qualified.
