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Renesas ICM7555IBAT
- Part No.:
- ICM7555IBAT
- Manufacturer:
- Renesas
- Category:
- Programmable Timers and Oscillators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICM7555IBAT.pdf
- Description:
- IC OSC SINGLE TIMER 1MHZ 8-SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,588
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Product details
Overview
ICM7555IBAT from Renesas Electronics is a CMOS general-purpose timer IC designed as a direct replacement for bipolar 555 timers in monostable and astable configurations. It delivers 60µA supply current, operates from 2V to 18V, features 20pA input currents, supports up to 1MHz oscillation, and enables precision timing from microseconds to hours in industrial control and sensor interface circuits.
For engineers reviewing the ICM7555IBAT datasheet, ICM7555IBAT pinout, ICM7555IBAT application, or ICM7555IBAT equivalent, this page provides verified functional identity, validated SOIC-8 package mapping, confirmed 8-pin terminal roles, real-world timing accuracy (±2%), and two industry-validated alternative parts with documented technical and application differences.
Technical Context
The ICM7555IBAT implements dual-comparator architecture with SR flip-flop control, where Threshold and Trigger inputs govern state transitions via voltage thresholds at ~2/3 VDD and ~1/3 VDD respectively. Its CMOS design eliminates crowbar current during output transitions and removes the need for Control Voltage decoupling.
It supports both monostable (one-shot) operation with externally set pulse width t = 1.1·RA·C and astable (oscillator) mode with frequency f = 1.44/(RA + 2RB)·C and adjustable duty cycle D = (RA + RB)/(RA + 2RB), all stable across –25°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0V to 18.0V - Enables single-supply operation across battery-powered and industrial rail systems without level-shifting. |
| Supply Current (Typ) | 60µA at 15V - Reduces system power budget by >99% versus bipolar 555, enabling always-on timing in low-power IoT nodes. |
| Input Current (Max) | 20pA - Allows use of high-impedance RC networks (e.g., 10MΩ + 100nF) for hour-scale delays without leakage-induced error. |
| Timing Accuracy | ±2% - Guarantees repeatable pulse widths and frequencies in production-grade instrumentation and calibration equipment. |
| Max Oscillator Frequency | 1MHz - Supports ultrasonic driver control, PWM generation up to 1MHz, and fast-response missing-pulse detection. |
| Temperature Drift | 0.005%/°C - Ensures <0.1% timing variation over full –25°C to +85°C range, critical for outdoor and automotive cabin applications. |
| Output Drive | Sinks 20mA / Sources 0.8mA - Directly drives LEDs, small relays, or TTL logic without external buffers in embedded control panels. |
Pinout & Package
ICM7555IBAT is housed in an 8-lead narrow-body SOIC package (JEDEC MS-012-AA, pkg drawing M8.15), RoHS-compliant, with 1.27mm lead pitch and 5.20mm body width.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Common return path for internal comparators, flip-flop, and output drivers; must be low-impedance for stable threshold referencing. |
| 2 (TRIGGER) | Falling-edge active input | Initiates monostable output high when voltage drops below ~1/3 VDD; high-impedance (20pA) enables RC delay networks. |
| 3 (OUTPUT) | CMOS inverter output | Rail-to-rail swing (VDD to GND); sources/sinks sufficient current for TTL loads or CMOS logic interfacing. |
| 4 (RESET) | Asynchronous low-active reset | Forces OUTPUT low and DISCHARGE on regardless of TRIGGER/THRESHOLD; trip point ~0.6V–0.7V across supply range. |
| 5 (CONTROL VOLTAGE) | Comparator reference offset | Adjusts internal 1/3 and 2/3 VDD thresholds; no decoupling capacitor required due to CMOS input impedance. |
| 6 (THRESHOLD) | Falling-edge inactive input | Terminates monostable pulse when voltage rises above ~2/3 VDD; used with DISCHARGE to define RC timing period. |
| 7 (DISCHARGE) | Open-drain N-channel switch | Internally connects to GND during OUTPUT low; discharges external timing capacitor in astable mode or resets monostable cycle. |
| 8 (VDD) | Positive supply rail | Accepts 2V–18V; no supply decoupling required due to absence of crowbar current during switching. |
Key Features
| Feature | Design Value |
|---|---|
| Direct SE/NE555 replacement | Pin-compatible with standard 555 in SOIC-8 footprint; retains identical pin numbering and functional behavior in both modes. |
| No supply decoupling needed | Eliminates mandatory 100nF ceramic capacitor at VDD/GND-reduces BOM count and PCB area in space-constrained designs. |
| High-impedance timing inputs | 20pA max trigger/threshold current allows RC time constants >1000 seconds using standard 1% film resistors and NP0 capacitors. |
| Stable control voltage interface | CMOS input at Pin 5 accepts analog modulation signals (e.g., from DAC or potentiometer) without external filtering or buffering. |
| Wide temperature operation | Specified for –25°C to +85°C industrial range-validates use in HVAC controllers, motor drives, and factory automation hardware. |
Applications
| Precision Timing | Pulse Generation |
|---|---|
Use Scenario: Generating calibrated 100ms delay for solenoid actuation in programmable logic controllers. IC Role / Device Role / Timing Role: Monostable one-shot timer triggered by PLC output edge. Use Value: ±2% accuracy ensures consistent mechanical response time across ambient temperatures without recalibration. | Use Scenario: Creating 50kHz square wave for ultrasonic transducer excitation in proximity sensors. IC Role / Device Role / Timing Role: Astable oscillator with 50% duty cycle and rail-to-rail output drive. Use Value: 1MHz max frequency and 20pA input leakage enable stable high-frequency operation without timing drift. |
| Time Delay Generation | Missing Pulse Detector |
Use Scenario: Implementing 5-second power-on reset hold-off for microcontroller initialization in medical diagnostic equipment. IC Role / Device Role / Timing Role: Monostable circuit with RA = 4.7MΩ, C = 1µF generating fixed delay after VDD stabilization. Use Value: 2V–18V supply range and 60µA quiescent current allow direct connection to unregulated battery rails. | Use Scenario: Monitoring encoder quadrature signals in CNC motion controllers for stall detection. IC Role / Device Role / Timing Role: Monostable retriggerable one-shot that resets on each valid pulse; timeout triggers fault flag if pulse train stops. Use Value: 20pA input current prevents false timeouts caused by signal leakage in long cable runs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar timer IC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC555CP | Higher supply current (100µA typ), wider temp range (0°C to +70°C only), same SOIC-8 pinout. | Limited to commercial temperature grade; less suitable for industrial environments requiring –25°C operation. | Select TLC555CP only for cost-sensitive consumer products operating within 0°C–70°C. |
| NE555P | Bipolar process: 3–6mA supply current, crowbar current during transitions, requires VDD decoupling and CV pin capacitor. | Higher power dissipation and layout complexity; not viable for battery-powered or thermally constrained designs. | Choose NE555P only for legacy repair or educational kits where CMOS advantages are non-critical. |
Compared with TLC555CP and NE555P, the ICM7555IBAT delivers 98% lower quiescent current, eliminates two decoupling capacitors, extends temperature range by 15°C at the low end, and maintains identical pin compatibility-making it the optimal upgrade for industrial timing functions.
Availability
ICM7555IBAT is available at Aetrix Electronics and suitable for precision timing, pulse generation, and time delay applications requiring stable component supply across industrial temperature ranges and long product lifecycles.
Supply support for ICM7555IBAT 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
Renesas Electronics is a global semiconductor leader delivering microcontrollers, analog, power, and timing solutions for industrial, automotive, and infrastructure markets.
The ICM7555IBAT belongs to Renesas' precision timer IC product line, engineered specifically to replace legacy bipolar 555 timers with CMOS efficiency, extended voltage range, and industrial-grade reliability.
FAQ
What is the operating temperature range for the ICM7555IBAT?
The ICM7555IBAT is rated for operation from –25°C to +85°C. This industrial temperature range is confirmed in the Ordering Information table (page 2) and Operating Conditions section (page 3) of the FN2867 Rev.10.01 datasheet, making it suitable for deployment in factory automation, outdoor instrumentation, and motor control enclosures where ambient conditions exceed commercial-grade limits.
Does the ICM7555IBAT require a decoupling capacitor on the Control Voltage (Pin 5)?
No, the ICM7555IBAT does not require a decoupling capacitor on the Control Voltage pin. Its CMOS input structure provides extremely high impedance (~20pA leakage), eliminating the need for external filtering-a key advantage over bipolar 555 timers. This is explicitly stated in the datasheet's "General" section (page 5) and "Control Voltage" subsection (page 6).
Is the ICM7555IBAT pin-compatible with the standard NE555 in SOIC-8 packages?
Yes, the ICM7555IBAT is pin-compatible with the NE555 in SOIC-8 packages. The Pin Configurations diagram (page 2) shows identical 8-pin top-view layout and function assignment (GND, TRIGGER, OUTPUT, RESET, CONTROL VOLTAGE, THRESHOLD, DISCHARGE, VDD). This direct replacement capability is emphasized in the datasheet's opening paragraph and Application Information section.
What is the maximum frequency achievable in astable mode using the ICM7555IBAT?
The ICM7555IBAT supports up to 1MHz in astable mode, measured under test conditions of VDD = 5V, RA = 470Ω, RB = 270Ω, and C = 200pF (Electrical Specifications, page 4). This maximum frequency is guaranteed by characterization data and enables high-speed PWM, ultrasonic driving, and fast-response timing functions beyond the capability of standard 555 timers.
Can the ICM7555IBAT drive TTL logic directly from its OUTPUT pin?
Yes, the ICM7555IBAT can drive at least two standard TTL loads directly. At VDD ≥ 4.5V, its OUTPUT pin sources/sinks sufficient current (VOH ≥ 4.0V at 0.8mA source; VOL ≤ 0.4V at 3.2mA sink) to meet TTL input thresholds. This is confirmed in the "OUTPUT DRIVE CAPABILITY" section (page 6) and Electrical Specifications table (page 4) of the datasheet.
ICM7555IBAT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- 555 Type, Timer/Oscillator (Single)
- Count:
- -
- Frequency:
- 1MHz
- Voltage - Supply:
- 2V ~ 18V
- Current - Supply:
- 60 µA
- Operating Temperature:
- -25°C ~ 85°C
- Supplier Device Package:
- 8-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ICM7555IBAT FAQ
1.How can I place an order for ICM7555IBAT through Aetrix?
Please submit a Request for Quotation (RFQ) for ICM7555IBAT 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 ICM7555IBAT reliable?
The price and inventory of ICM7555IBAT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICM7555IBAT is usually 5 days.
3.What payment methods are accepted for ICM7555IBAT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICM7555IBAT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICM7555IBAT?
ICM7555IBAT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICM7555IBAT 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 ICM7555IBAT?
For technical support, including ICM7555IBAT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICM7555IBAT requirements.
6.How does Aetrix verify that ICM7555IBAT is sourced from the original manufacturer or authorized distributors?
All ICM7555IBAT 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 ICM7555IBAT meets industry standards.
7.What is the process for return or replacement of ICM7555IBAT?
All ICM7555IBAT units undergo pre-shipment inspection (PSI). If there is an issue with ICM7555IBAT, 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 ICM7555IBAT part is unused and in its original packaging.
Return procedure for ICM7555IBAT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ICM7555IBAT Tags
-
NE555DR
Texas Instruments
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SA555DR
Texas Instruments
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NA555DR
Texas Instruments
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SE555DR
Texas Instruments
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NE555P
Texas Instruments
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CD4541BM96
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CD4541BE
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TLC555QDR
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TLC555IDR
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TLC555QDRQ1
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TPL5010DDCR
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TLC555CP
Texas Instruments
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