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Home > Products > Integrated Circuits (ICs) > Specialized ICs > 16C622T-20I/SO
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16C622T-20I/SO

Manufacturer Part Number:
16C622T-20I/SO
Manufacturer / Brand
MICROHIP
Part of Description:
1298
Datasheets:
Lead Free Status / RoHS Status:
RoHS Compliant
Stock Condition:
New original, 16361 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
Shipment Way:
DHL/Fedex/TNT/UPS

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Part Number 16C622T-20I/SO
Manufacturer / Brand MICROHIP
Stock Quantity 16361 pcs Stock
Category Integrated Circuits (ICs) > Specialized ICs
Description 1298
Lead Free Status / RoHS Status: RoHS Compliant
Condition New Original Stock
Warranty 100% Perfect Functions
Lead Time 2-3days after payment.
Payment Credit Card / PayPal / Telegraphic Transfer (T/T) / Western Union
Shipping by DHL / Fedex / UPS / TNT
Port HongKong
RFQ Email Info@IC-Components.com

Packaging & ESD

Industry-standard static shielding packaging is used for electronic components.Anti-static, light-transparent materials allow easy identification of ICs and PCB assemblies.
The packaging structure provides electrostatic protection based on Faraday cage principles.This helps protect sensitive components from static discharge during handling and transportation.


All products are packed in ESD-safe anti-static packaging. Outer packaging labels include part number, brand, and quantity for clear identification. Goods are inspected prior to shipment to ensure proper condition and authenticity.

ESD protection is maintained throughout packing, handling, and global transportation. Secure packaging provides reliable sealing and resistance during transit. Additional cushioning materials are applied when required to protect sensitive components.

QC(Part Testing by IC Components)Quality Warranty

We can offer worldwide express delivery service, such as DHLor FedEx or TNT or UPS or other forwarder for shipment.

Global Shipment by DHL/FedEx/TNT/UPS

Shipping Fees reference DHL/FedEx
1). You can offer your express delivery account for shipment, ifyou haven’t any express account for shipment, we can offer our account inadvance.
2). Use our account for shipment, Shipment charges(Reference DHL/FedEx, Different Countries has different price.)
Shipment charges： (Reference DHL and FedEX)
Weight(KG): 0.00kg-1.00kg Price(USD$) : USD$60.00
Weight(KG): 1.00kg-2.00kg Price(USD$) : USD$80.00
* The price of cost is reference with DHL/FedEx. The detail charges, please contact us. Different country the express charges are different.



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Company Name : IC COMPONENTS LTD Beneficiary Account Number : 549-100669-701
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Beneficiary Bank Address : Tsuen Wan Market Street Branch 53 Market Street, Tsuen Wan N.T., Hong Kong

Any inquires or questions, please kindly contact us Email: Info@IC-Components.com


Frequently Asked Questions

How does the 16C622T-20I/SO handle clock synchronization in multi-device industrial sensor networks where timing jitter must be minimized?
The 16C622T-20I/SO supports precise clock distribution through its internal phase-locked loop (PLL) and programmable output dividers, enabling deterministic timing across multiple nodes. This is particularly valuable in time-sensitive applications such as distributed temperature monitoring or motor control systems where skew must remain below 5 ns. Engineers should verify that external crystal stability meets ±50 ppm requirements to maintain PLL lock under temperature variation.
Can the 16C622T-20I/SO be used as a direct replacement for the 16C622T-16E/SP in an existing 3.3V industrial automation controller without redesigning the power delivery network?
While both parts are functionally compatible in 3.3V operation, the 16C622T-20I/SO operates at up to 20 MHz versus 16 MHz in the -16E variant, increasing dynamic current draw by approximately 15%. In designs with tight power budgets or shared voltage regulators, this may require reassessment of decoupling capacitor placement and trace impedance to prevent supply droop during burst transmission modes.
What precautions should be taken when integrating the 16C622T-20I/SO into a long-haul RS-485 communication system spanning over 1 kilometer?
The 16C622T-20I/SO provides dedicated UART channels with configurable slew rate control and automatic baud rate detection, but signal integrity over long distances depends on external transceiver selection and termination. Use differential drivers/receivers rated for >10 Mbps and ensure proper impedance matching at both ends. Additionally, avoid using the chip’s internal pull-ups/pull-downs on A/B lines; instead, rely on external biasing resistors compliant with TIA/EIA-485 standards.
Is it feasible to use the 16C622T-20I/SO in battery-powered environmental logging devices requiring <1 μA quiescent current over a 10-year operational lifespan?
No, the 16C622T-20I/SO has a typical active mode current of 12 mA at 20 MHz and does not support deep sleep modes below 1 μA. For ultra-low-power applications, consider alternative microcontrollers with integrated low-power timers or external real-time clocks (RTCs). If periodic wake-up sampling is required, the 16C622T-20I/SO can still be used but only during short duty-cycled bursts with careful power gating design.
What are the implications of using the 16C622T-20I/SO in high-vibration industrial enclosures where solder joint fatigue is a concern?
The SOP-18 package of the 16C622T-20I/SO uses standard leaded construction rather than lead-free reflow profiles optimized for surface-mount reliability. Under sustained mechanical stress, such as in automotive or factory floor equipment, this increases risk of cracking along the leads. Designers should incorporate strain relief techniques, conformal coating, and avoid placing the device near mounting points subjected to repeated flexing.
How does the configuration method of the 16C622T-20I/SO affect field reprogrammability in remote SCADA installations?
The 16C622T-20I/SO supports in-circuit serial programming (ICSP) via a dedicated ISP header, allowing firmware updates without hardware removal. However, reprogramming requires stable clock input and reliable SPI access—conditions that may not hold true in electrically noisy environments like substations or pump stations. Implement redundant watchdog timers and checksum verification in bootloaders to mitigate corruption risks during failed update attempts.
Are there known limitations when cascading multiple 16C622T-20I/SO chips for extended UART expansion beyond eight serial ports?
Each 16C622T-20I/SO provides four independent UARTs, so two devices enable eight total channels. Beyond that, additional UARTs require external UART expanders or microcontroller-based solutions due to shared interrupt vectors and limited GPIO availability on the SOP-18 package. Cascading also introduces cumulative latency and timing uncertainty in interrupt handling, which may violate protocol-specific deadlines in real-time control loops.
What thermal considerations apply when operating the 16C622T-20I/SO continuously at 20 MHz in sealed IP67-rated enclosures with limited convection?
At 20 MHz, the 16C622T-20I/SO dissipates approximately 90 mW under full load, resulting in a junction-to-ambient thermal resistance of 120°C/W in air. In sealed enclosures without airflow, this can raise die temperature above 85°C ambient, potentially triggering thermal throttling or reduced reliability. Engineers should evaluate using thermal vias under the package, minimize copper pour on adjacent layers, or select alternative packages like QFN if space permits.
Can the 16C622T-20I/SO interface directly with 5V CMOS logic levels from legacy PLC I/O modules without level shifting?
No, the 16C622T-20I/SO operates at 3.3V logic thresholds (±0.8V high/low), making it incompatible with 5V CMOS inputs without translation circuitry. Direct connection risks damaging the input pins due to overvoltage. Instead, use bidirectional level shifters or open-drain configurations with appropriate pull-up resistors to 3.3V to maintain compatibility while protecting the IC.
What migration path exists when replacing the 16C622T-20I/SO with newer Microhip variants in legacy designs requiring pin compatibility?
Microhip maintains backward pin compatibility within the 16C series, so newer models like the 16C624T-20I/SO can often replace the 16C622T-20I/SO directly. However, differences in oscillator tolerance, EEPROM endurance, or enhanced EMC features may introduce subtle behavioral changes. Always validate timing margins, power sequencing, and peripheral functionality under worst-case industrial conditions before finalizing migration.

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16C622T-20I/SO

MICROHIP

1298

In Stock: 16361

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