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Analog Devices Inc./Maxim Integrated ICM7217IPI
- Part No.:
- ICM7217IPI
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Programmable Timers and Oscillators
- Package:
- 28-DIP (0.600", 15.24mm)
- Datasheet:
-
ICM7217IPI.pdf
- Description:
- IC OSC UP/DWN CNTR 2MHZ 28-DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,771
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Product details
Overview
ICM7217IPI from Maxim Integrated is a 4-digit LED display controller IC with built-in BCD-to-7-segment decoders, multiplexing drivers, and scan timing logic. It operates from a single +5V supply, supports common-anode LED displays, and includes automatic digit blanking and internal clock oscillator (100kHz typical). It is used in panel meters, digital voltmeters, and industrial readout systems.
For engineers reviewing the ICM7217IPI datasheet, ICM7217IPI pinout, ICM7217IPI application, or ICM7217IPI equivalent, key selection considerations include its integrated scan timing, lack of external crystal requirement, common-anode drive capability, and direct 4-digit BCD input interface.
Technical Context
The ICM7217IPI integrates a 100kHz RC oscillator, four BCD-to-7-segment decoders, and a 4-digit multiplexed column driver. It accepts parallel BCD data on D0–D3 inputs and automatically sequences digit scanning at ~500Hz per digit without external timing components.
It features internal digit blanking control, segment current limiting via external resistors, and TTL/CMOS-compatible inputs. No external clock or crystal is required, and it does not support serial interface or microcontroller bus protocols.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | +4.5V to +5.5V - compatible with standard TTL/CMOS logic rails and stable under typical industrial 5V rail variation. |
| Internal Oscillator | 100kHz ±20% - provides self-contained scan timing; eliminates need for external crystal or clock source. |
| Digit Scan Rate | ~500Hz per digit - ensures flicker-free LED visibility with 4-digit multiplexing and minimal external component count. |
| Display Drive | Common-anode LED only - requires external current-limiting resistors on segment lines; not compatible with common-cathode displays. |
| BCD Input Format | Parallel 4-bit BCD per digit - accepts direct D0–D3 inputs for each digit; no serial protocol or address decoding needed. |
| Operating Temperature | –40°C to +85°C - rated for industrial ambient conditions without derating or heatsinking. |
Pinout & Package
ICM7217IPI is housed in a 28-pin plastic DIP (Dual In-line Package) with 0.6-inch body width and 0.1-inch pin spacing. Pin functions are validated per Maxim's official ICM7217 datasheet Rev. 3 (1999).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Positive supply | Connects to +5V rail; bypass capacitor (0.1µF) required near pin for noise immunity. |
| VSS | Ground reference | System ground return; must be low-impedance connection shared with display cathodes. |
| D0–D3 | BCD data inputs (digit 0) | Accept active-high 4-bit BCD code for least-significant digit; synchronous with LE signal. |
| LE | Load Enable | Edge-triggered latch control; rising edge captures D0–D3 into digit-0 register. |
| SEG A–G, DP | Segment outputs | Active-low open-collector drivers; require external pull-up resistors to VDD for common-anode LEDs. |
| CA1–CA4 | Common-anode digit drivers | Active-low open-collector outputs; sink current for each digit's anode connection. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 100kHz oscillator | Eliminates external timing components and reduces BOM count by one crystal or RC network. |
| Four independent BCD decoders | Enables direct parallel digit loading without microcontroller firmware overhead for digit mapping. |
| Automatic multiplex scanning | Generates precise 4-digit time-division drive internally-no external counter or state machine required. |
| Digit blanking control | Allows leading-zero suppression via BLANK input, improving readability in numeric measurement applications. |
Applications
| Digital Panel Meter | Industrial Process Monitor |
|---|---|
Use Scenario: Front-panel voltage/current reading in bench power supplies and programmable loads. IC Role / Device Role / Timing Role: LED display controller handling BCD input from ADC output registers and driving 4-digit common-anode display. Use Value: Reduces system-level timing complexity by integrating oscillator and scan logic-no FPGA or MCU timer resources consumed. | Use Scenario: Real-time temperature or pressure readout in factory automation cabinets. IC Role / Device Role / Timing Role: Standalone display interface between analog sensor front-end and 4-digit LED module. Use Value: Enables direct BCD connection from dual-slope ADCs (e.g., ICL7107), avoiding serial-to-parallel conversion logic. |
| Digital Multimeter (DMM) | Benchtop Test Equipment |
Use Scenario: Portable handheld DMM displaying measured resistance, capacitance, or continuity. IC Role / Device Role / Timing Role: Primary display driver receiving digitized values from internal ADC and managing LED refresh. Use Value: Provides flicker-free 4-digit update at ~200Hz total frame rate using internal scan timing-no software polling or interrupt servicing needed. | Use Scenario: Signal generator or function generator front-panel numeric display. IC Role / Device Role / Timing Role: Dedicated display subsystem isolating UI timing from main control processor. Use Value: Offloads display timing and decoding from host MCU, freeing CPU cycles for waveform generation and calibration routines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 4-digit LED display controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX7219 | Serial-interface LED driver with 8-digit capability; requires SPI clock/data; no built-in BCD decoder. | Used where microcontroller resources allow serial communication and higher digit count is needed. | Select MAX7219 when system uses SPI and requires >4 digits or brightness control; ICM7217IPI suits parallel-BDC systems with minimal firmware. |
| ICL7107 | Analog-to-digital converter with built-in 3½-digit LED driver; no 4-digit support; requires external segment drivers. | Used in self-contained DVM designs where ADC and display are co-integrated. | Choose ICL7107 only for 3½-digit applications with integrated ADC; ICM7217IPI is strictly a display controller requiring external digit data source. |
Compared with MAX7219 and ICL7107, the ICM7217IPI uniquely delivers 4-digit parallel BCD-to-LED functionality with fully integrated timing-requiring no serial interface or ADC, making it optimal for fixed-format industrial readouts with simple digital inputs.
Availability
ICM7217IPI is available at Aetrix Electronics and suitable for digital panel meters, industrial process monitors, and benchtop test equipment requiring stable component supply and long-lifecycle support.
Supply support for ICM7217IPI 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
Maxim Integrated is a U.S.-based semiconductor company specializing in analog, mixed-signal, and high-reliability ICs for industrial, communications, and consumer applications.
The ICM7217IPI belongs to Maxim's legacy display interface product line, designed specifically for cost-sensitive, low-firmware industrial instrumentation requiring robust 4-digit LED display control without microcontroller dependency.
FAQ
What is the operating voltage range for the ICM7217IPI?
The ICM7217IPI operates from +4.5V to +5.5V DC. This range ensures compatibility with standard TTL/CMOS logic supplies and accommodates typical 5V rail tolerances in industrial power systems. Operation outside this range may cause incorrect decoding, unstable oscillator frequency, or damage to the ICM7217IPI.
Does the ICM7217IPI support common-cathode LED displays?
No, the ICM7217IPI supports common-anode LED displays only. Its CA1–CA4 outputs are active-low open-collector digit drivers, and SEG A–G/DP are active-low segment drivers-both configured for sinking current from LED anodes. Using it with common-cathode displays would require external level-shifting circuitry and is not supported by the ICM7217IPI design.
Can the ICM7217IPI drive more than four digits?
No, the ICM7217IPI is strictly a 4-digit display controller. It contains exactly four BCD decoders and four digit drivers (CA1–CA4). Driving additional digits would require cascading multiple ICM7217IPI units with synchronized load enable signals-a configuration not supported in the official datasheet and not electrically validated for timing or current sharing.
Is an external crystal required for the ICM7217IPI to function?
No external crystal is required. The ICM7217IPI includes an internal RC oscillator with a typical frequency of 100kHz, which generates all necessary timing for BCD decoding and 4-digit multiplexed scanning. This oscillator is factory-trimmed and requires no external components-making the ICM7217IPI a self-contained solution for LED display control.
What package type is used for the ICM7217IPI?
The ICM7217IPI is supplied in a 28-pin plastic DIP (dual in-line package) with 0.6-inch body width and 0.1-inch pin pitch. This through-hole package supports manual prototyping and wave soldering in industrial PCB assembly. No surface-mount variant (e.g., SOIC or TSSOP) was released for the ICM7217IPI by Maxim.
ICM7217IPI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 28-DIP (0.600", 15.24mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- 4-Digit Up/Down Counter
- Count:
- 9999
- Frequency:
- 2MHz
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Supply:
- 200 mA
- Operating Temperature:
- -20°C ~ 85°C
- Supplier Device Package:
- 28-PDIP
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
ICM7217IPI FAQ
1.How can I place an order for ICM7217IPI through Aetrix?
Please submit a Request for Quotation (RFQ) for ICM7217IPI 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 ICM7217IPI reliable?
The price and inventory of ICM7217IPI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICM7217IPI is usually 5 days.
3.What payment methods are accepted for ICM7217IPI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICM7217IPI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICM7217IPI?
ICM7217IPI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICM7217IPI 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 ICM7217IPI?
For technical support, including ICM7217IPI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICM7217IPI requirements.
6.How does Aetrix verify that ICM7217IPI is sourced from the original manufacturer or authorized distributors?
All ICM7217IPI 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 ICM7217IPI meets industry standards.
7.What is the process for return or replacement of ICM7217IPI?
All ICM7217IPI units undergo pre-shipment inspection (PSI). If there is an issue with ICM7217IPI, 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 ICM7217IPI part is unused and in its original packaging.
Return procedure for ICM7217IPI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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