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Home > Products > Integrated Circuits (ICs) > Specialized ICs > SP2305AF-1H
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SP2305AF-1H

Manufacturer Part Number:
SP2305AF-1H
Manufacturer / Brand
SIPEX
Part of Description:
666
Datasheets:
Lead Free Status / RoHS Status:
RoHS Compliant
Stock Condition:
New original, 14451 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
Shipment Way:
DHL/Fedex/TNT/UPS

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Part Number SP2305AF-1H
Manufacturer / Brand SIPEX
Stock Quantity 14451 pcs Stock
Category Integrated Circuits (ICs) > Specialized ICs
Description 666
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

What are the critical power supply sequencing requirements when integrating the SP2305AF-1H into a mixed-voltage system with 3.3V and 5V logic domains?
The SP2305AF-1H requires that the VCC input be stable and within the specified 2.7V to 5.5V range before enabling downstream loads. If interfacing with 5V logic, ensure that input signal levels do not exceed VCC + 0.3V to prevent latch-up or damage. In systems where 5V rails power up before the 3.3V rail connected to VCC, use a series current-limiting resistor or level-shifting buffer on control inputs to avoid forward-biasing internal ESD diodes.
Can the SP2305AF-1H be used as a direct drop-in replacement for the MAX3232E in a legacy RS-232 transceiver design?
The SP2305AF-1H is not a direct functional replacement for the MAX3232E due to differences in charge pump architecture and I/O voltage tolerance. While both support 3V to 5V operation, the SP2305AF-1H lacks true RS-232-compliant ±5V output swing under all load conditions and may require external bias networks for reliable communication at low baud rates. Additionally, the MAX3232E includes integrated slew-rate control, which the SP2305AF-1H omits—requiring external RC filtering if EMI compliance is a concern.
What layout considerations are essential to maintain signal integrity when placing the SP2305AF-1H in a high-noise industrial environment?
Place the SP2305AF-1H as close as possible to the connector or termination point to minimize trace length on RS-232 lines. Use a solid ground plane beneath the device and connect the exposed thermal pad (if applicable) to ground with multiple vias. Keep charge pump capacitors (C1–C4) within 5 mm of the IC pins, using low-ESR ceramic types rated for at least 10V. Avoid routing high-speed digital signals parallel to RS-232 traces to reduce crosstalk.
Under what conditions might the SP2305AF-1H fail to meet RS-232 voltage swing specifications, and how can this be mitigated?
The SP2305AF-1H may fail to achieve full ±5.5V output swing when operating near the lower end of its supply range (e.g., 3.0V) or under heavy capacitive loads (>300 pF). This can result in marginal signal levels that violate RS-232 receiver thresholds. To mitigate, ensure VCC is maintained above 3.3V during transmission, limit cable length to under 15 meters, and verify actual output levels with an oscilloscope under worst-case load conditions.
Is the SP2305AF-1H suitable for battery-powered applications requiring ultra-low standby current?
The SP2305AF-1H is not optimized for ultra-low-power operation; its quiescent current typically exceeds 300 µA during active use and does not include an automatic shutdown mode. For battery-powered designs where sleep current must be below 10 µA, consider alternatives like the MAX3221 or SP3222E, which feature enable pins and nano-power shutdown modes. The SP2305AF-1H is better suited for always-on industrial communication nodes.
How does the absence of integrated ESD protection on the SP2305AF-1H impact deployment in field-installable equipment?
The SP2305AF-1H provides only minimal internal ESD protection (typically ±2 kV HBM), which is insufficient for equipment exposed to frequent cable mating or harsh environments. In such cases, add external TVS diodes (e.g., SMAJ15CA) on the RS-232 lines close to the connector. Without this, repeated ESD events may degrade performance or cause latent failures, especially in outdoor or factory settings.
What are the implications of using the SP2305AF-1H in a multi-drop RS-232 network with more than two nodes?
The SP2305AF-1H is designed for point-to-point communication and does not support multi-drop configurations due to its push-pull driver stage, which cannot be tri-stated. Connecting multiple SP2305AF-1H drivers to a shared bus risks bus contention and potential device damage. For multi-drop applications, use transceivers with open-drain outputs or protocol-level solutions like RS-485 with appropriate transceivers.
Can the SP2305AF-1H operate reliably over an extended temperature range in automotive under-hood applications?
The SP2305AF-1H is rated for commercial temperature ranges (0°C to 70°C), making it unsuitable for direct under-hood deployment where temperatures exceed 85°C. Prolonged exposure to high ambient temperatures can degrade charge pump efficiency and increase output impedance. For automotive use, select an AEC-Q100 qualified alternative such as the MAX3232E-Q1 or ensure the SP2305AF-1H is housed in a thermally controlled enclosure.
What configuration or external components are needed to ensure stable operation of the SP2305AF-1H with a 3.3V microcontroller UART?
When interfacing a 3.3V microcontroller with the SP2305AF-1H, no level shifting is required for the TTL-side inputs (T1IN, T2IN), as they are 5V-tolerant. However, ensure the microcontroller’s UART pins can accept the SP2305AF-1H’s 0–3.3V logic outputs (R1OUT, R2OUT). If the MCU has strict 3.3V input thresholds, verify VIH/VIL compatibility; otherwise, a pull-up to 3.3V on the RX line may improve noise margin.
Are there known compatibility issues when replacing a legacy SP2305AE with the SP2305AF-1H in existing PCB designs?
The SP2305AF-1H is a revised version of the SP2305AE with improved charge pump stability but slightly different startup timing. While pin-compatible in SOP-8 packaging, the SP2305AF-1H may exhibit faster edge rates, which can increase EMI in sensitive designs. Re-evaluate conducted emissions if the original design passed regulatory testing with the SP2305AE. Additionally, confirm that existing bypass capacitor values (typically 0.1 µF) remain adequate for the updated internal oscillator frequency.

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SP2305AF-1H

SIPEX

666

In Stock: 14451

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