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NXP Semiconductors ICM7555CD,602
- Part No.:
- ICM7555CD,602
- Manufacturer:
- NXP Semiconductors
- Category:
- Programmable Timers and Oscillators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICM7555CD,602.pdf
- Description:
- IC OSC SGL TIMER 500KHZ 8-SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,284
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Product details
Overview
ICM7555CD,602 from NXP Semiconductors is a CMOS precision timer IC designed as a low-power, high-accuracy replacement for the NE/SE555 in monostable and astable configurations. It delivers 80 µA typical supply current, 20 pA typical trigger/threshold/reset input currents, rail-to-rail output swing, and guaranteed 500 kHz oscillator operation across 3 V to 16 V supply - enabling microsecond-to-hour timing in industrial control, sensor interface, and power management circuits.
For engineers reviewing the ICM7555CD,602 datasheet, ICM7555CD,602 pinout, ICM7555CD,602 application, or ICM7555CD,602 equivalent, key selection criteria include its ultra-low input bias current (enabling high-Z RC networks), absence of supply crowbarring (eliminating mandatory decoupling), CONTROL_VOLTAGE pin usability without external capacitor, and SO8 package compatibility with automated SMT assembly.
Technical Context
The ICM7555CD,602 implements dual high-impedance CMOS comparators feeding an SR flip-flop, with independent DISCHARGE transistor control - enabling precise threshold detection at 1/3 VDD and 2/3 VDD without supply current spikes. Its output stage uses complementary MOSFETs to achieve rail-to-rail sourcing/sinking up to 3.2 mA sink and −1.0 mA source while maintaining TTL/CMOS logic compatibility.
Unlike bipolar 555 timers, the ICM7555CD,602 avoids internal crowbar current during output transitions and eliminates need for CONTROL_VOLTAGE decoupling due to >1012 Ω input impedance. Timing stability is enhanced by temperature coefficient of 0.005 %/°C and supply voltage insensitivity (0.1–3.0 %/V frequency variation).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 16 V - supports single-supply operation across battery, logic, and industrial rails without level-shifting. |
| Supply Current | 80 µA typical - enables multi-year battery life in portable timing applications. |
| Input Bias Current | 20 pA typical on TRIGGER/THRESHOLD/RESET - permits use of MΩ-range resistors and nF-range capacitors for long time constants. |
| Oscillator Frequency | Up to 500 kHz - sufficient for PWM generation, clock synthesis, and high-speed pulse shaping. |
| Output Drive | Rail-to-rail swing, ±3.2 mA sink/source - directly interfaces with TTL and CMOS loads without external buffers. |
| Temperature Stability | 0.005 %/°C at 25 °C - ensures <±0.5 % timing drift over 0–70 °C industrial range. |
| Timing Modes | Monostable and astable - supports both one-shot delay generation and free-running oscillation with adjustable duty cycle. |
Pinout & Package
ICM7555CD,602 is housed in an SO8 (SOT96-1) plastic small outline package, 3.9 mm body width, 1.27 mm lead pitch, suitable for reflow soldering per J-STD-020C lead-free profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Supply reference ground | Return path for all internal circuitry; must be low-impedance connection to system ground plane. |
| TRIGGER (Pin 2) | Monostable start input | Active-LOW edge-sensitive input initiating timing cycle; 20 pA leakage enables high-impedance pull-up networks. |
| OUTPUT (Pin 3) | Logic-level output driver | Rail-to-rail CMOS inverter output capable of sourcing/sinking ≥3.2 mA; drives TTL/CMOS directly. |
| RESET (Pin 4) | Timer inhibit control | Active-LOW asynchronous reset overriding all other inputs; high-impedance input avoids loading external logic. |
| CONTROL_VOLTAGE (Pin 5) | Threshold reference adjust | Direct access to internal comparator reference divider; enables voltage-controlled frequency or delay modulation without external capacitor. |
| THRESHOLD (Pin 6) | Capacitor upper-voltage sense | Detects when timing capacitor reaches 2/3 VDD to terminate monostable pulse or discharge phase in astable mode. |
| DISCHARGE (Pin 7) | Timing capacitor discharge path | Open-drain NMOS switch sinking up to 10 mA; used to discharge external timing capacitor during astable discharge phase. |
| VDD (Pin 8) | Positive supply input | Accepts 3–16 V DC; no external decoupling required due to absence of supply crowbarring during transitions. |
Key Features
| Feature | Design Value |
|---|---|
| Direct NE/SE555 replacement | Pin-compatible and functionally identical in most circuits, with improved electrical specs and reduced BOM count. |
| No supply decoupling required | Eliminates 100 nF ceramic capacitor near VDD/GND pins due to absence of crowbar current during output switching. |
| No CONTROL_VOLTAGE decoupling | Saves second 10 nF capacitor by leveraging >1 TΩ input impedance - simplifies layout and reduces cost. |
| High-impedance timing network support | Enables RC time constants up to hours using 10 MΩ resistors and 100 µF capacitors without accuracy loss. |
| Rail-to-rail output swing | Ensures full logic swing across entire 3–16 V supply range - critical for interfacing with mixed-voltage systems. |
Applications
| Precision Timing | Pulse Generation |
|---|---|
Use Scenario: Generating stable 10 ms delay for microcontroller watchdog reset conditioning in automotive body control modules. IC Role / Device Role / Timing Role: Monostable one-shot providing accurate, temperature-stable delay independent of supply voltage fluctuations. Use Value: Eliminates timing drift caused by 12 V battery sag; replaces discrete RC+logic solution with single-IC, space-saving implementation. | Use Scenario: Creating variable-duty-cycle square wave for LED brightness control in industrial HMI panels. IC Role / Device Role / Timing Role: Astable oscillator with RA/RB ratio-adjustable duty cycle and frequency set by single capacitor. Use Value: Enables smooth 0–100 % dimming via analog voltage on CONTROL_VOLTAGE pin without MCU intervention. |
| Time Delay Generation | Missing Pulse Detector |
Use Scenario: Introducing calibrated 2 s delay between motor startup phases in HVAC blower control. IC Role / Device Role / Timing Role: Monostable timer triggered by rising edge of enable signal, with RC network defining fixed delay. Use Value: Prevents inrush current overlap; achieves ±1 % delay accuracy over 0–70 °C without calibration. | Use Scenario: Monitoring encoder quadrature signals in CNC motion controllers for stall detection. IC Role / Device Role / Timing Role: Monostable configured as retriggerable one-shot - output stays HIGH only if pulses arrive within defined window. Use Value: Detects >100 ms pulse absence with <1 µA quiescent current, enabling low-power fault logging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar timer IC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NE555P | Bipolar process; 10 mA supply current; requires VDD decoupling and CONTROL_VOLTAGE capacitor; 100× higher input bias current. | Lower cost but unsuitable for battery-powered or high-impedance timing networks; limited to ≤100 kHz operation. | Select NE555P only for legacy designs where pin compatibility is mandatory and power/accuracy constraints are relaxed. |
| LMC555IMX/NOPB | CMOS design like ICM7555CD,602 but with 50 µA supply current; same SO8 package; 2 pA input bias; wider temp range (−40 to +105 °C). | Better suited for extended temperature environments; slightly lower supply current but identical functional behavior. | Choose LMC555IMX/NOPB for new designs requiring −40 °C operation or marginally lower power; otherwise ICM7555CD,602 remains optimal for 0–70 °C industrial use. |
Compared with NE555P and LMC555IMX/NOPB, the ICM7555CD,602 offers best-in-class input impedance for ultra-long time constants, proven SO8 reliability in automotive-qualified production, and optimal balance of cost, performance, and manufacturability for 0–70 °C applications.
Availability
ICM7555CD,602 is available at Aetrix Electronics and suitable for precision timing, pulse generation, and time delay applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant SMT assembly.
Supply support for ICM7555CD,602 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.
The ICM7555CD,602 belongs to NXP's general-purpose analog timer product line, engineered for drop-in replacement of legacy 555 timers while delivering CMOS advantages in power efficiency, timing accuracy, and design simplicity.
FAQ
What is the maximum operating supply voltage for the ICM7555CD,602?
The ICM7555CD,602 has an absolute maximum supply voltage of 18 V, with guaranteed operation from 3 V to 16 V across its specified 0 °C to +70 °C temperature range. Exceeding 18 V risks destructive latch-up due to SCR structure inherent in its CMOS fabrication process.
Does the ICM7555CD,602 require a decoupling capacitor on the CONTROL_VOLTAGE pin?
No, the ICM7555CD,602 does not require a decoupling capacitor on the CONTROL_VOLTAGE pin due to its extremely high input impedance (>1 TΩ), which prevents noise coupling and eliminates the need for external filtering - a key advantage over bipolar 555 timers.
Can the ICM7555CD,602 drive TTL logic directly?
Yes, the ICM7555CD,602 can drive at least two standard TTL loads when VDD ≥ 4.5 V, thanks to its rail-to-rail CMOS output stage capable of sourcing −1.0 mA and sinking 3.2 mA - meeting TTL input voltage and current requirements without external buffers.
What is the typical input bias current on the TRIGGER pin of the ICM7555CD,602?
The typical input bias current on the TRIGGER pin of the ICM7555CD,602 is 20 pA at 25 °C, enabling use of high-value timing resistors (up to 10 MΩ) without significant timing error - a critical feature for microamp-level power designs.
Is the ICM7555CD,602 pin-compatible with the NE555?
Yes, the ICM7555CD,602 is pin-compatible with the NE555 in SO8 packaging and functions identically in monostable and astable modes, making it a direct drop-in replacement that improves performance without PCB layout changes.
ICM7555CD,602 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- 555 Type, Timer/Oscillator (Single)
- Count:
- -
- Frequency:
- 500kHz
- Voltage - Supply:
- 3V ~ 16V
- Current - Supply:
- 180 µA
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 8-SO
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ICM7555CD,602 FAQ
1.How can I place an order for ICM7555CD,602 through Aetrix?
Please submit a Request for Quotation (RFQ) for ICM7555CD,602 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ICM7555CD,602 reliable?
The price and inventory of ICM7555CD,602 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICM7555CD,602 is usually 5 days.
3.What payment methods are accepted for ICM7555CD,602?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICM7555CD,602 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICM7555CD,602?
ICM7555CD,602 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICM7555CD,602 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ICM7555CD,602?
For technical support, including ICM7555CD,602 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICM7555CD,602 requirements.
6.How does Aetrix verify that ICM7555CD,602 is sourced from the original manufacturer or authorized distributors?
All ICM7555CD,602 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ICM7555CD,602 meets industry standards.
7.What is the process for return or replacement of ICM7555CD,602?
All ICM7555CD,602 units undergo pre-shipment inspection (PSI). If there is an issue with ICM7555CD,602, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ICM7555CD,602 part is unused and in its original packaging.
Return procedure for ICM7555CD,602:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ICM7555CD,602 Tags
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NA555DR
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SE555DR
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NE555P
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TLC555QDR
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TLC555QDRQ1
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TPL5010DDCR
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TLC555CP
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