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Analog Devices Inc. HMC253QS24E
- Part No.:
- HMC253QS24E
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF Switches
- Package:
- 24-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
HMC253QS24E.pdf
- Description:
- IC RF SWITCH SP8T 2.5GHZ 24QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,199
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Product details
Overview
HMC253QS24E from Analog Devices (formerly Hittite Microwave) is a GaAs MMIC SP8T non-reflective RF switch operating from DC to 2.5 GHz, featuring 1.3 dB typical insertion loss at 2 GHz, integrated 3:8 TTL decoder, and single +5 V supply. It serves as a compact replacement for multiple SP4T/SPDT configurations in broadband front-end signal routing.
For engineers reviewing the HMC253QS24E datasheet, HMC253QS24E pinout, HMC253QS24E application, or HMC253QS24E equivalent, key selection criteria include its non-reflective architecture, TTL/CMOS-compatible control interface, 24-lead QSOP package, and RF performance across CATV, CDMA, and cellular/PCS bands.
Technical Context
The HMC253QS24E implements a monolithic GaAs MMIC SP8T switch with internal 3:8 decoder logic, enabling path selection via three TTL/CMOS control lines (A, B, C) and a single +5 V bias. Its non-reflective topology maintains 50 Ω impedance in all off-state ports, minimizing system-level mismatch.
DC blocking capacitors are required at RFCOM and all eight RF ports (RF1–RF8). Switching is characterized by 30 ns rise/fall time and 100 ns turn-on/turn-off delay, with operation validated from –40 °C to +85 °C and absolute max Vdd of +7 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | DC to 2.5 GHz - supports wideband RF routing without band switching or external tuning. |
| Insertion Loss (2 GHz) | 1.3 dB typ - enables low-loss signal path selection critical for receiver sensitivity and transmitter efficiency. |
| Isolation (2 GHz) | 26 dB min - suppresses crosstalk between active and inactive RF paths in multi-channel systems. |
| Input IP3 | 40 dBm min - ensures linearity for two-tone +7 dBm inputs in CDMA/PCS base station front ends. |
| Control Interface | TTL/CMOS compatible (0–0.8 V low, 2–5 V high) - simplifies integration with FPGA or microcontroller GPIO without level-shifting. |
| Supply Voltage | +5.0 V ±10% - eliminates need for dedicated bias rails; compatible with standard digital power domains. |
| Switching Speed | tRISE/tFALL = 30 ns - supports fast channel hopping and TDD mode transitions in time-division systems. |
Pinout & Package
Package: 24-lead QSOP (RoHS-compliant, matte tin plating, MSL1, max reflow 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 switch core and integrated decoder; requires local 0.01 µF bypass capacitor. |
| A, B, C | Decoder address inputs | 3-bit TTL/CMOS control lines selecting one of eight RF paths per truth table; high-impedance inputs draw ≤70 µA. |
| RF1–RF8 | Switch output ports | Non-reflective 50 Ω RF outputs; each requires DC blocking capacitor (e.g., 100 pF, 0402) before connection to system traces. |
| RFCOM | Common RF input | Single RF input port routed to selected RF1–RF8; must be DC blocked and impedance-matched to 50 Ω. |
| GND (Leads 1, 2, 3, 4, 5, 6, 19, 20, 21, 22, 23, 24) | RF and substrate ground | All ground leads must be soldered directly to PCB RF ground plane with multiple vias to minimize inductance. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 3:8 TTL decoder | Reduces control complexity from eight lines to three, eliminating external logic and saving board space in multi-path systems. |
| Non-reflective SP8T architecture | Maintains 50 Ω termination on all unselected ports, preventing signal reflections that degrade VSWR and system stability. |
| DC–2.5 GHz bandwidth | Supports unified front-end design across CATV, CDMA, PCS, and cellular bands without discrete band-switching networks. |
| +5 V single-supply operation | Eliminates negative or dual supplies, simplifying power delivery and reducing BOM count in portable and base station modules. |
| 24-lead QSOP RoHS package | Enables high-density RF layout with standardized footprint; matte tin plating supports lead-free assembly up to 260 °C. |
Applications
| CATV/DBS Signal Routing | CDMA Base Station Front End |
|---|---|
Use Scenario: Selecting between multiple satellite LNB outputs or downstream cable channels in headend equipment. IC Role / Device Role / Timing Role: SP8T RF switch routing broadband IF signals (950–2150 MHz) with minimal loss and reflection. Use Value: 1.3 dB insertion loss preserves CNR margin; non-reflective behavior prevents ghosting and intermodulation in multi-channel amplifiers. | Use Scenario: Dynamic antenna path selection in multi-sector CDMA BTS transceivers during beamforming or diversity switching. IC Role / Device Role / Timing Role: High-isolation RF path selector handling 824–894 MHz transmit/receive bands with fast 100 ns switching. Use Value: 26 dB isolation at 850 MHz minimizes TX-to-RX leakage; TTL control enables direct FPGA-driven timing alignment. |
| Cellular/PCS Handset Front End | Multi-Band Test Equipment Switch Matrix |
Use Scenario: Consolidating antenna switching for LTE Bands 2, 4, 5, and 13 in compact mobile device RF front-end modules. IC Role / Device Role / Timing Role: Single-chip SP8T replacing discrete SPDT/SP4T combinations to reduce component count and PCB area. Use Value: 24-lead QSOP fits tight layouts; +5 V supply matches PMIC output rails, avoiding extra regulators. | Use Scenario: Building automated RF test fixtures that route signals between DUTs, analyzers, and sources across DC–2.5 GHz. IC Role / Device Role / Timing Role: Programmable signal path manager controlled via GPIB or USB MCU, supporting repeatability and calibration traceability. Use Value: 40 dBm IIP3 ensures measurement fidelity with high-power stimulus; DC coupling allows sub-100 MHz calibration reference paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SP8T RF switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HMC547LP3E | SPDT, 0.1–6.0 GHz, 0.8 dB IL @ 2 GHz, requires dual supply (–5 V/+5 V), no integrated decoder. | Limited to 2-path selection; lacks SP8T functionality and TTL decoding, requiring external logic. | Select when ultra-low loss (<0.8 dB) and higher frequency (to 6 GHz) outweigh path count and control simplicity. |
| Qorvo QM11036 | SP8T, 0.7–2.7 GHz, 1.4 dB IL @ 2 GHz, +3.3 V supply, CMOS-only control, no DC–low-frequency support. | Not DC-coupled; unsuitable for CATV IF or sub-100 MHz applications; lower supply voltage reduces power handling. | Select for 3.3 V systems where DC–low-frequency operation is not required and footprint compatibility is verified. |
Compared with HMC253QS24E, HMC547LP3E offers superior high-frequency loss but lacks path count and integrated control, while QM11036 provides modern 3.3 V compatibility but sacrifices DC coupling and absolute linearity-making HMC253QS24E optimal for legacy broadband, TTL-based, and DC-coupled SP8T needs.
Availability
HMC253QS24E is available at Aetrix Electronics and suitable for CATV/DBS infrastructure, CDMA base stations, cellular/PCS handsets, and RF test equipment requiring stable component supply and long-term obsolescence management.
Supply support for HMC253QS24E 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, Inc. is a global semiconductor leader specializing in high-performance analog, mixed-signal, and RF technologies for precision signal processing and connectivity.
The HMC253QS24E belongs to Analog Devices' legacy Hittite RF switch product line, engineered for broadband, non-reflective, TTL-controlled signal routing in communications infrastructure and test instrumentation.
FAQ
What is the operating temperature range for the HMC253QS24E?
The HMC253QS24E is specified for continuous operation from –40 °C to +85 °C ambient temperature. This range is validated per the Absolute Maximum Ratings table and supported by thermal characterization in the datasheet. The device's GaAs MMIC process and QSOP packaging ensure reliable performance across industrial and outdoor base station environments. Derating is not required within this range, and the HMC253QS24E maintains full specification compliance at both extremes.
Does the HMC253QS24E require external DC blocking capacitors?
Yes, the HMC253QS24E requires external DC blocking capacitors at RFCOM and all eight RF output ports (RF1–RF8), as explicitly stated in the datasheet notes. These capacitors prevent DC bias from propagating into connected circuitry and maintain proper RF matching. Typical values used on the evaluation board are 100 pF in 0402 package, placed as close as possible to the device pins. Omitting them risks damage to downstream components and degrades return loss and isolation performance.
What is the maximum input power rating for the HMC253QS24E?
The HMC253QS24E has a maximum input power rating of +20 dBm from 0.05–0.5 GHz and +24 dBm from 0.5–2.5 GHz, under Vdd = +5 V conditions. These limits are defined in the Absolute Maximum Ratings section and reflect safe continuous-wave operation. Exceeding them risks permanent degradation of GaAs FET channels. For pulsed or modulated signals, peak power must still remain within these thresholds to avoid gate breakdown or thermal runaway.
How does the integrated 3:8 decoder simplify system design with the HMC253QS24E?
The integrated 3:8 TTL decoder in the HMC253QS24E reduces control wiring from eight individual enable lines to just three address lines (A, B, C), eliminating external logic ICs and associated layout complexity. This simplifies FPGA or microcontroller GPIO usage, cuts PCB layer count, and improves timing consistency across all eight paths. The decoder operates natively with 0–0.8 V low and 2–5 V high logic levels, requiring no level shifters when interfacing with standard digital ICs.
Is the HMC253QS24E pin-compatible with the HMC253QS24?
Yes, the HMC253QS24E is pin-compatible with the HMC253QS24, sharing identical 24-lead QSOP footprint, pinout, and electrical interface. The only differences are RoHS compliance (matte tin vs. Sn/Pb plating) and higher MSL1 reflow tolerance (260 °C vs. 235 °C). No PCB redesign is needed when migrating from HMC253QS24 to HMC253QS24E, and all functional specifications-including insertion loss, isolation, and switching speed-are identical across both variants.
HMC253QS24E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 24-SSOP (0.154", 3.90mm Width)
- Packaging:
- Strip
- Product Status:
- Obsolete
- RF Type:
- General Purpose
- Topology:
- Absorptive
- Circuit:
- SP8T
- Frequency Range:
- 0Hz ~ 2.5GHz
- Isolation:
- 28dB
- Insertion Loss:
- 1.8dB
- Test Frequency:
- 2.5GHz
- P1dB:
- 23dBm
- IIP3:
- 43dBm
- Features:
- -
- Impedance:
- 50Ohm
- Voltage - Supply:
- 5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-QSOP
HMC253QS24E FAQ
1.How can I place an order for HMC253QS24E through Aetrix?
Please submit a Request for Quotation (RFQ) for HMC253QS24E 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 HMC253QS24E reliable?
The price and inventory of HMC253QS24E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HMC253QS24E is usually 5 days.
3.What payment methods are accepted for HMC253QS24E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HMC253QS24E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HMC253QS24E?
HMC253QS24E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HMC253QS24E 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 HMC253QS24E?
For technical support, including HMC253QS24E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HMC253QS24E requirements.
6.How does Aetrix verify that HMC253QS24E is sourced from the original manufacturer or authorized distributors?
All HMC253QS24E 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 HMC253QS24E meets industry standards.
7.What is the process for return or replacement of HMC253QS24E?
All HMC253QS24E units undergo pre-shipment inspection (PSI). If there is an issue with HMC253QS24E, 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 HMC253QS24E part is unused and in its original packaging.
Return procedure for HMC253QS24E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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