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Analog Devices Inc. HMC253LC4TR-R5
- Part No.:
- HMC253LC4TR-R5
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF Switches
- Package:
- 24-TFCQFN Exposed Pad
- Datasheet:
-
HMC253LC4TR-R5.pdf
- Description:
- IC RF SWITCH SP8T 3.5GHZ 24CQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,730
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Product details
Overview
HMC253LC4TR-R5 from Analog Devices (formerly Hittite Microwave) is a GaAs MMIC SP8T non-reflective RF switch in a 4×4 mm ceramic SMT package, operating from DC to 3.5 GHz with 1.2 dB typical insertion loss, 35 dB isolation at 2.0 GHz, and TTL/CMOS-compatible 3-bit control (A/B/C) enabling selection of one of eight RF paths from a common RFC port - used in cellular infrastructure front-end switching.
For engineers reviewing the HMC253LC4TR-R5 datasheet, HMC253LC4TR-R5 pinout, HMC253LC4TR-R5 application, or HMC253LC4TR-R5 equivalent, key selection criteria include its non-reflective topology, integrated 3:8 decoder, +5 V single-supply operation, DC–3.5 GHz bandwidth, and RoHS-compliant 24-pin leadless ceramic package with exposed ground paddle.
Technical Context
The HMC253LC4TR-R5 implements a monolithic GaAs-based SP8T architecture with on-die 3:8 TTL/CMOS decoder, eliminating external logic and reducing control lines to three (CTLA, CTLB, CTLC). Its non-reflective design maintains 50 Ω impedance in all off-states, minimizing system-level VSWR degradation during path switching.
It operates over –40 °C to +85 °C with +5 V ±10% supply (6 mA typical IDD) and supports +25 dBm input power handling from 0.5–3.5 GHz. DC blocking capacitors are required at all RF ports (RFC, RF1–RF8), and all ground pins plus the exposed paddle must be soldered to PCB RF ground.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | DC to 3.5 GHz - enables broadband use across cellular, WiMAX, and military RF front ends without band-specific re-design. |
| Insertion Loss | 1.2 dB typ. @ DC–3.0 GHz - ensures minimal signal attenuation when routing RF through selected path. |
| Isolation | 35 dB min. @ DC–2.0 GHz - prevents crosstalk between unselected RF paths during multi-antenna or filter bank switching. |
| Input IP3 | 40 dBm min. @ 0.5–3.5 GHz - supports linear operation with two-tone +7 dBm inputs in high-dynamic-range transceivers. |
| Switching Speed | tON/tOFF = 100 ns max. - allows fast TDD mode transitions and agile frequency-hopping systems. |
| Control Interface | TTL/CMOS 3-bit (A/B/C) with 0/+3 V logic levels - directly interfaces with FPGA GPIO or baseband processor without level-shifting. |
| Supply Voltage | +5 V ±10% - simplifies biasing using standard telecom power rails; draws only 6 mA typical current. |
Pinout & Package
Ceramic 4×4 mm leadless surface-mount package (alumina body, gold-over-nickel plating, MSL3), with 24 terminals: 9 RF ports (RFC, RF1–RF8), 3 control inputs (CTLA, CTLB, CTLC), 1 Vdd, and 11 ground connections (including exposed bottom paddle requiring solder attachment to PCB RF ground).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 7, 12, 14, 16, 18, 20, 21, 23 | GND | RF ground reference points; all must connect to low-inductance PCB ground plane - critical for return loss and isolation performance. |
| 2, 4, 6, 13, 15, 17, 19, 22, 24 | RF1–RF8 & RFC | DC-coupled 50 Ω RF ports; require external DC blocking capacitors (e.g., 100 pF 0402) per port for AC-coupled systems. |
| 8 | Vdd | +5 V ±10% supply input; bypass with 0.01 µF capacitor near pin to suppress RF supply noise. |
| 9, 10, 11 | CTLC, CTLB, CTLA | 3-bit TTL/CMOS control lines; logic state defines selected RF path per truth table - no pull-up/down required. |
Key Features
| Feature | Design Value |
|---|---|
| Non-reflective topology | Maintains 50 Ω match in all off-states, preventing reflected energy from disrupting upstream PA or LNA stages. |
| Integrated 3:8 decoder | Reduces control interface to three logic lines and eliminates external decoding logic, saving board space and BOM cost. |
| Single +5 V supply | Eliminates need for dual-rail or negative supplies - compatible with standard digital power domains in base station cards. |
| Rugged GaAs MMIC process | Supports +25 dBm RF input power (0.5–3.5 GHz) and 150 °C channel temperature - suitable for high-reliability infrastructure. |
| RoHS-compliant ceramic SMT | 4×4 mm footprint with exposed ground paddle enables repeatable RF performance and thermal dissipation in dense layouts. |
Applications
| Cellular Base Station Front-End | WiMAX/WiBro Transceiver Switching |
|---|---|
|
Use Scenario: Switching between multiple antenna elements or filter banks in LTE/FDD-TDD macro base stations. IC Role / Device Role / Timing Role: SP8T RF path selector routing transmit/receive signals between TRX modules and antenna arrays. Use Value: Non-reflective behavior preserves PA stability; 1.2 dB loss minimizes EIRP degradation; 35 dB isolation prevents inter-band interference. |
Use Scenario: Dynamic reconfiguration of RF chains in fixed wireless access nodes supporting multiple WiMAX profiles. IC Role / Device Role / Timing Role: High-speed RF path selector enabling rapid band/frequency switching under baseband control. Use Value: 100 ns switching speed supports subframe-level reconfiguration; +25 dBm power handling accommodates high-PHY output. |
| CATV/DBS Signal Routing | Military Communications Systems |
|
Use Scenario: Multiplexing downstream/upstream signals across multiple QAM modulators/demodulators in headend equipment. IC Role / Device Role / Timing Role: Broadband SP8T switch managing signal distribution between RF processing blocks and coaxial outputs. Use Value: DC–3.5 GHz coverage spans DOCSIS 3.1 spectrum; 12 dB return loss (0.3–3.5 GHz) ensures cable plant impedance integrity. |
Use Scenario: Reconfigurable front-end in tactical radios or EW systems requiring multi-band, multi-function RF routing. IC Role / Device Role / Timing Role: Radiation-tolerant SP8T switch enabling mission-critical path selection under wide temperature (-40 to +85 °C). Use Value: Alumina ceramic package withstands mechanical shock/vibration; 150 °C channel rating supports conduction-cooled chassis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SP8T RF switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Qorvo QM11036 | Si-based SP8T; 0.1–3.8 GHz; 1.5 dB IL; requires dual supply (+5 V & –5 V); no integrated decoder. | Lower cost but higher layout complexity due to external logic and negative rail; less suited for space-constrained telecom cards. | Prefer when cost sensitivity outweighs board area constraints and dual-supply infrastructure exists. |
| MACOM MASW-011120 | GaAs SP8T; 0.01–4.0 GHz; 1.3 dB IL; TTL-compatible; no integrated decoder; 5×5 mm QFN package. | Larger footprint and separate decode logic needed; better low-frequency extension but lacks HMC253LC4TR-R5's 4×4 mm density. | Prefer when sub-100 MHz operation is required or when existing layout accommodates larger QFN. |
Compared with QM11036 and MASW-011120, the HMC253LC4TR-R5 delivers superior integration via its on-die 3:8 decoder and compact 4×4 mm footprint - reducing component count and PCB area while maintaining DC–3.5 GHz performance and +5 V simplicity.
Availability
HMC253LC4TR-R5 is available at Aetrix Electronics and suitable for cellular infrastructure, fixed wireless access, CATV/DBS headend, and military communications systems requiring stable component supply, long-term obsolescence management, and traceable sourcing.
Supply support for HMC253LC4TR-R5 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 integrates its high-frequency RF portfolio into ADI's broader signal chain solutions, emphasizing performance, reliability, and system-level integration.
The HMC253LC4TR-R5 belongs to Hittite's GaAs MMIC SPnT switch product line, designed specifically for broadband RF front-end reconfiguration in telecom infrastructure where low loss, high isolation, and compact integration are critical.
FAQ
What is the operating temperature range for the HMC253LC4TR-R5?
The HMC253LC4TR-R5 is specified for continuous operation from –40 °C to +85 °C ambient temperature. Its GaAs die supports up to 150 °C channel temperature, making it suitable for thermally demanding base station and military applications where airflow may be limited. Derating applies above +85 °C ambient per absolute maximum ratings.
Does the HMC253LC4TR-R5 require external DC blocking capacitors?
Yes, the HMC253LC4TR-R5 requires external DC blocking capacitors at all RF ports (RFC, RF1–RF8) because all RF terminals are DC-coupled and internally matched to 50 Ω. Typical implementation uses 100 pF 0402 capacitors placed as close as possible to each RF pin to maintain broadband impedance integrity.
How is the HMC253LC4TR-R5 controlled, and what logic levels are supported?
The HMC253LC4TR-R5 uses three TTL/CMOS-compatible control inputs (CTLA, CTLB, CTLC) accepting 0 to +0.8 V for logic low and +2.0 to +5 V for logic high. It features an integrated 3:8 decoder, so only these three lines - no external logic - are needed to select among the eight RF paths per the provided truth table.
What is the recommended PCB grounding strategy for the HMC253LC4TR-R5?
All 11 designated GND pins (1, 3, 5, 7, 12, 14, 16, 18, 20, 21, 23) plus the exposed bottom ground paddle must be soldered to a solid, low-inductance RF ground plane. Use multiple vias under the paddle and ensure short, direct traces to ground - this is essential to achieve specified return loss (>12 dB) and isolation (>35 dB).
Can the HMC253LC4TR-R5 replace discrete SP4T or SPDT switch configurations?
Yes, the HMC253LC4TR-R5 is explicitly positioned to replace multiple SP4T and SPDT MMIC switches in RF front ends. Its SP8T topology with integrated decoder reduces component count, simplifies routing, and improves repeatability versus cascaded discrete solutions - confirmed in Hittite's application notes and evaluation board documentation for HMC253LC4TR-R5.
HMC253LC4TR-R5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 24-TFCQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- RF Type:
- Cellular, CATV
- Topology:
- Absorptive
- Circuit:
- SP8T
- Frequency Range:
- 0Hz ~ 3.5GHz
- Isolation:
- 35dB
- Insertion Loss:
- 1.3dB
- Test Frequency:
- 3.5GHz
- P1dB:
- -
- IIP3:
- 43dBm
- Features:
- -
- Impedance:
- 50Ohm
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-CQFN (4x4)
HMC253LC4TR-R5 FAQ
1.How can I place an order for HMC253LC4TR-R5 through Aetrix?
Please submit a Request for Quotation (RFQ) for HMC253LC4TR-R5 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 HMC253LC4TR-R5 reliable?
The price and inventory of HMC253LC4TR-R5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HMC253LC4TR-R5 is usually 5 days.
3.What payment methods are accepted for HMC253LC4TR-R5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HMC253LC4TR-R5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HMC253LC4TR-R5?
HMC253LC4TR-R5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HMC253LC4TR-R5 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 HMC253LC4TR-R5?
For technical support, including HMC253LC4TR-R5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HMC253LC4TR-R5 requirements.
6.How does Aetrix verify that HMC253LC4TR-R5 is sourced from the original manufacturer or authorized distributors?
All HMC253LC4TR-R5 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 HMC253LC4TR-R5 meets industry standards.
7.What is the process for return or replacement of HMC253LC4TR-R5?
All HMC253LC4TR-R5 units undergo pre-shipment inspection (PSI). If there is an issue with HMC253LC4TR-R5, 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 HMC253LC4TR-R5 part is unused and in its original packaging.
Return procedure for HMC253LC4TR-R5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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