Analog Devices Inc. HMC241QS16E
- Part No.:
- HMC241QS16E
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF Switches
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
HMC241QS16E.pdf
- Description:
- IC RF SWITCH SP4T 3.5GHZ 16QSOP
- Quantity:
- Payment:

- Shipping:

Inventory:3,532
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Product details
Overview
HMC241QS16E from Analog Devices (formerly Hittite Microwave) is a GaAs MMIC SP4T non-reflective RF switch operating from DC to 3.5 GHz, featuring 0.5 dB insertion loss at 2 GHz, 45 dB isolation at 1 GHz, and integrated 2:4 TTL decoder requiring only two control lines. It delivers +25 dBm input IP3 and supports +5 V single-supply operation with true TTL/CMOS compatibility, deployed in base station front-ends and wireless test equipment.
For engineers reviewing the HMC241QS16E datasheet, HMC241QS16E pinout, HMC241QS16E application, or HMC241QS16E equivalent, key selection criteria include its non-reflective architecture, DC–3.5 GHz bandwidth, QSOP-16 package thermal resistance (210 °C/W on insertion path), +22 dBm P1dB compression point, and RoHS-compliant matte tin leadframe plating.
Technical Context
This monolithic GaAs SP4T switch integrates a 2:4 TTL decoder to reduce external logic count-only two digital control inputs (A, B) select RFCOM-to-RF1/2/3/4 paths, eliminating eight discrete control lines typical of legacy GaAs switches. Bias is simplified via single +5 V supply with 4 mA typical quiescent current.
Non-reflective topology ensures matched 50 Ω impedance across all RF ports in both "on" and "off" states, enabling cascaded switching without external matching networks. DC blocking capacitors are required at RFC and RF1–RF4 ports per design specification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | DC to 3.5 GHz - supports full-band cellular, WLAN, and CATV signal routing without band switching |
| Insertion Loss (2 GHz) | 0.5 dB typ. - minimizes signal attenuation in high-gain receiver chains and transmitter output stages |
| Isolation (1 GHz) | 45 dB typ. - prevents inter-channel crosstalk in multi-path diversity and MIMO antenna systems |
| P1dB Compression | +22 dBm min. - handles moderate-power transmit signals without distortion in portable wireless infrastructure |
| Input IP3 | +40 dBm min. - enables linear operation with two-tone +7 dBm inputs for low intermodulation in broadband receivers |
| Switching Time | 150 ns tON/tOFF - supports fast channel hopping and time-division duplex (TDD) waveform timing |
| Supply Voltage | +5.0 V ±10% - compatible with standard logic rails and eliminates need for auxiliary bias supplies |
Pinout & Package
Package: 16-lead QSOP (Quad Small Outline Package), RoHS-compliant, matte tin-plated copper alloy leadframe, MSL1 rating, max reflow temperature 260 °C. Body material: low-stress injection-molded plastic silica/silicon impregnated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Vdd | Bias supply input | +5 V DC power for internal decoder and switch core; 4 mA typical quiescent draw |
| GND (Pins 1, 2, 3, 4, 13, 14, 15, 16) | RF and DC ground reference | All ground pins must be soldered directly to PCB RF ground plane per layout requirement |
| A, B | TTL/CMOS control inputs | Two-bit binary address selects RFCOM→RF1 (LL), RF2 (HL), RF3 (LH), RF4 (HH) |
| RFCOM | Common RF port | Single input/output node routed to one of four RF outputs based on A/B state |
| RF1–RF4 | Four switched RF ports | Non-reflective 50 Ω terminations in "off" state; require DC blocking capacitors |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 2:4 TTL decoder | Reduces system-level control complexity by replacing eight discrete control lines with two logic inputs |
| Non-reflective SP4T architecture | Ensures 50 Ω match at all ports in all states-eliminates need for external termination resistors or matching networks |
| Single +5 V supply operation | Removes dependency on negative or dual-rail bias supplies, simplifying power delivery in compact RF modules |
| RoHS-compliant matte tin plating | Enables lead-free reflow assembly (260 °C peak) while maintaining solderability and corrosion resistance |
| DC–3.5 GHz bandwidth | Covers LTE Bands 1–40, Wi-Fi 2.4/5 GHz, and CATV downstream (54–1002 MHz) in a single device |
Applications
| Base Station Front-End | CATV/DBS Signal Routing |
|---|---|
Use Scenario: Antenna diversity switching and TDD/FDD mode selection in macrocell and small-cell BTS transceivers. IC Role / Device Role / Timing Role: SP4T RF switch routing main/diversity receive paths and transmit/receive isolation paths. Use Value: 45 dB isolation at 1 GHz prevents desensitization between adjacent receive channels; 0.5 dB loss preserves noise figure budget. |
Use Scenario: Channel selection and signal path switching in multi-tuner set-top boxes and headend amplifiers. IC Role / Device Role / Timing Role: Non-reflective RF path selector enabling simultaneous tuning of multiple downstream frequencies (54–1002 MHz). Use Value: DC–3.5 GHz bandwidth covers full CATV spectrum; +22 dBm P1dB supports high-level cable signal distribution without compression. |
| Wireless Test Equipment | Portable Wireless Infrastructure |
Use Scenario: Automated RF path configuration in vector network analyzers and signal generators during calibration and sweep routines. IC Role / Device Role / Timing Role: High-speed RF multiplexer enabling sequential measurement of DUT ports under software control. Use Value: 150 ns switching time allows sub-millisecond path reconfiguration; TTL compatibility integrates directly with FPGA I/O banks. |
Use Scenario: Transmit/receive path switching in portable repeaters, femtocells, and customer premises equipment. IC Role / Device Role / Timing Role: Low-cost SP4T switch managing antenna sharing between LTE/Wi-Fi radios and GPS receivers. Use Value: Integrated decoder reduces BOM count and PCB area; RoHS-compliant packaging meets global environmental compliance mandates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SP4T RF switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Qorvo QM11036 | Si-based SP4T, 0.8 dB IL @ 2.5 GHz, +30 dBm P1dB, requires dual supply (+3.3 V & –2.5 V) | Higher power handling but incompatible TTL interface; needs level-shifting for microcontroller control | Preferred where higher linearity and ruggedness outweigh control complexity |
| Skyworks SKY13370-374LF | SP4T GaAs pHEMT, 0.7 dB IL @ 2 GHz, 38 dB isolation @ 1 GHz, no integrated decoder | Requires external 2:4 decoder IC or GPIO expansion; larger footprint due to separate logic | Selected when board space permits discrete logic and tighter cost targeting is required |
Compared with QM11036 and SKY13370-374LF, the HMC241QS16E uniquely combines integrated TTL decoding, non-reflective topology, and RoHS-compliant QSOP packaging-reducing component count and layout risk in space-constrained, high-volume RF front-ends.
Availability
HMC241QS16E is available at Aetrix Electronics and suitable for base station front-ends, CATV/DBS signal routing, and wireless test equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for HMC241QS16E 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
Analog Devices acquired Hittite Microwave in 2014 and maintains its high-frequency RF portfolio, specializing in GaAs, GaN, and SiGe MMIC solutions for communications and defense markets.
The HMC241QS16E belongs to Hittite's legacy SP4T switch product line, engineered for broadband non-reflective signal routing in infrastructure-grade wireless systems demanding low loss, high isolation, and TTL simplicity.
FAQ
What is the operating temperature range for the HMC241QS16E?
The HMC241QS16E operates over –40 °C to +85 °C ambient temperature, validated per absolute maximum ratings and electrical specifications tables. Its thermal resistance of 210 °C/W on the insertion-loss path enables reliable performance in enclosed base station enclosures and outdoor small-cell units without forced cooling, provided PCB thermal vias and ground plane area meet recommended layout guidelines.
Does the HMC241QS16E require external DC blocking capacitors?
Yes, the HMC241QS16E requires external DC blocking capacitors at RFCOM and all four RF ports (RF1–RF4), as explicitly stated in the datasheet notes. This is mandatory to prevent DC bias interference between stages and maintain proper RF port impedance matching-omission risks degraded return loss and potential damage to connected components.
Is the HMC241QS16E pin-compatible with the HMC241QS16?
Yes, the HMC241QS16E is a RoHS-compliant drop-in replacement for the HMC241QS16, sharing identical pinout, outline drawing, and electrical specifications. The only differences are leadframe plating (100% matte tin vs. Sn/Pb) and peak reflow temperature (260 °C vs. 235 °C), making HMC241QS16E suitable for lead-free assembly without layout changes.
What is the control voltage threshold for TTL compatibility on the HMC241QS16E?
The HMC241QS16E accepts TTL/CMOS logic levels: "Low" is defined as 0 to +0.8 Vdc at 5 µA typical input current; "High" is +2.0 to +5.0 Vdc at 70 µA typical input current. This ensures direct interfacing with standard 3.3 V or 5 V microcontrollers and FPGAs without level-shifting circuitry.
Can the HMC241QS16E be used in reflective (series-shunt) configurations?
No-the HMC241QS16E is strictly a non-reflective SP4T switch, meaning all RF ports present 50 Ω impedance in both "on" and "off" states. It cannot be configured as a reflective switch; attempting to omit termination or repurpose ports violates its specified architecture and degrades isolation and return loss performance.
HMC241QS16E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Strip
- Product Status:
- Obsolete
- RF Type:
- General Purpose
- Topology:
- Absorptive
- Circuit:
- SP4T
- Frequency Range:
- 0Hz ~ 3.5GHz
- Isolation:
- 26dB
- Insertion Loss:
- 1dB
- Test Frequency:
- 3.5GHz
- P1dB:
- 25dBm
- IIP3:
- 44dBm
- Features:
- -
- Impedance:
- 50Ohm
- Voltage - Supply:
- 5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QSOP
HMC241QS16E FAQ
1.How can I place an order for HMC241QS16E through Aetrix?
Please submit a Request for Quotation (RFQ) for HMC241QS16E 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 HMC241QS16E reliable?
The price and inventory of HMC241QS16E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HMC241QS16E is usually 5 days.
3.What payment methods are accepted for HMC241QS16E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HMC241QS16E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HMC241QS16E?
HMC241QS16E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HMC241QS16E 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 HMC241QS16E?
For technical support, including HMC241QS16E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HMC241QS16E requirements.
6.How does Aetrix verify that HMC241QS16E is sourced from the original manufacturer or authorized distributors?
All HMC241QS16E 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 HMC241QS16E meets industry standards.
7.What is the process for return or replacement of HMC241QS16E?
All HMC241QS16E units undergo pre-shipment inspection (PSI). If there is an issue with HMC241QS16E, 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 HMC241QS16E part is unused and in its original packaging.
Return procedure for HMC241QS16E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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