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Renesas CD22M3494SQZ
- Part No.:
- CD22M3494SQZ
- Manufacturer:
- Renesas
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
CD22M3494SQZ.pdf
- Description:
- IC SWITCH XPOINT 16X8 44-PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,433
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Product details
Overview
CD22M3494SQZ from Intersil is a 16×8 (128-channel) BiMOS-E analog crosspoint switch IC designed for high-fidelity signal routing in telephony and instrumentation systems. It operates from 4V to 15V supply, delivers ≤65 Ω typical ON resistance at 12V, supports full-rail analog input swing (VEE to VDD), and enables individual switch control via parallel address/data/strobe interface.
For engineers reviewing the CD22M3494SQZ datasheet, CD22M3494SQZ pinout, CD22M3494SQZ application, or CD22M3494SQZ equivalent, key selection criteria include guaranteed rON matching (≤10 Ω max ΔrON), low crosstalk (−95 dB feedthrough), 50 MHz −3 dB bandwidth, and PLCC-44 SGS lead-compatible packaging for PBX and video switching designs.
Technical Context
The CD22M3494SQZ integrates a 7-to-128 line decoder driving a 16×8 transmission gate array, with independent X-row (X0–X15) and Y-column (Y0–Y7) I/Os. Addressing uses four AX (X-axis) and three AY (Y-axis) inputs, while DATA and STROBE jointly determine switch state-high DATA + rising STROBE closes, low DATA + rising STROBE opens.
It features dual negative supplies: VSS (digital ground) and VEE (analog ground), enabling rail-to-rail analog signal handling. Chip Select (CS) supports cascading multiple devices into larger matrices, and RESET asynchronously opens all switches. All logic inputs tolerate VSS-to-VDD voltage levels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Count | 128 independent analog crosspoints (16 rows × 8 columns) |
| ON Resistance | ≤65 Ω max at VDD = 12V, TA = −40°C to +85°C - ensures minimal insertion loss in audio/video paths |
| rON Matching | ≤10 Ω max ΔrON across any two switches - critical for balanced multi-channel signal routing |
| Bandwidth | 50 MHz (−3 dB, RL = 75 Ω, CL = 3 pF) - supports standard-definition video switching |
| Feedthrough | −95 dB typical (1 kHz, 2 VP-P) - suppresses off-channel signal coupling in dense matrices |
| Supply Range | 4V to 15V (VDD referenced to VEE/VSS) - accommodates both 5V digital control and ±5V analog rails |
| Logic Compatibility | VIL ≤ 0.8V, VIH ≥ 2.4V at VDD = 5V - interfaces directly with TTL/CMOS controllers without level shifters |
Pinout & Package
CD22M3494SQZ is housed in a 44-lead PLCC package compliant with SGS lead pitch (JEDEC MS-018AC, pkg drawing N44.65), measuring 17.40 mm × 17.40 mm × 4.57 mm (max height), with gull-wing leads and pin 1 identifier marked on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AX0–AX3 | X-axis address inputs | Select one of 16 row lines (X0–X15); decoded internally to drive row drivers |
| AY0–AY2 | Y-axis address inputs | Select one of 8 column lines (Y0–Y7); combined with AX to uniquely address 128 switches |
| DATA | Switch state control | High = close addressed switch; low = open; sampled on STROBE rising edge |
| STROBE | Address latch enable | Rising edge latches AX/AY/DATA; minimum pulse width 20 ns required |
| RESET | Global switch reset | Pulse high (≥20 ns) to open all 128 switches simultaneously |
| CS | Chip select | Active-high; enables device for addressing and allows cascading with other CD22M3494 units |
| X0–X15 | Row I/O terminals | Analog/digital bidirectional ports; each connects to one row of 8 switches |
| Y0–Y7 | Column I/O terminals | Analog/digital bidirectional ports; each connects to one column of 16 switches |
| VDD | Positive supply | +4V to +15V analog/digital power; powers internal logic and switch drivers |
| VSS | Digital ground | Reference for logic inputs/outputs; tied to 0 V in most implementations |
| VEE | Analog ground | Reference for analog signal paths; supports negative swing when biased below VSS |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed rON matching | ΔrON ≤ 10 Ω across all 128 switches - eliminates gain mismatch in multi-channel instrumentation |
| Rail-to-rail analog input range | Signals swing from VEE to VDD - supports ±5V, ±12V, or single-supply 0–12V signal routing without clamping |
| Low crosstalk architecture | −95 dB feedthrough and 10 MHz crosstalk attenuation - preserves signal integrity in high-density PBX backplanes |
| PLCC-44 SGS lead compatibility | Pinout matches legacy SGS M3494 - enables drop-in replacement in existing PLCC-44 SGS-layout PCBs |
| Cascadable matrix expansion | CS input enables stacking multiple CD22M3494SQZ units - scales to 32×8, 48×8, or custom non-power-of-two matrices |
Applications
| PBX Switching Matrix | Video Signal Router |
|---|---|
Use Scenario: Digital telephone exchange connecting 16 trunk lines to 8 subscriber ports with dynamic reconfiguration. IC Role / Device Role / Timing Role: Crosspoint switch providing non-blocking analog voice path selection under microcontroller address control. Use Value: Enables real-time call setup/clear with <100 ns propagation delay and <0.01% THD for carrier-grade voice fidelity. | Use Scenario: Broadcast equipment routing composite video between 16 camera inputs and 8 monitor outputs. IC Role / Device Role / Timing Role: High-bandwidth analog switch array handling 0–5 MHz baseband video with minimal distortion. Use Value: Delivers 50 MHz −3 dB bandwidth and −95 dB feedthrough to prevent ghosting or crosstalk between active video channels. |
| Automated Test Equipment (ATE) | Medical Instrumentation Multiplexer |
Use Scenario: Precision multimeter front-end selecting among 16 sensor inputs before ADC sampling. IC Role / Device Role / Timing Role: Low-leakage, matched-resistance analog multiplexer routing DC–100 kHz signals to measurement circuitry. Use Value: ≤±10 µA OFF-state leakage and ≤10 Ω rON matching ensure accurate low-level voltage/current measurements. | Use Scenario: Patient monitoring system aggregating ECG, EEG, and SpO₂ analog waveforms onto shared acquisition hardware. IC Role / Device Role / Timing Role: Biopotential-grade analog switch isolating high-impedance electrode inputs during channel scanning. Use Value: Full-rail input capability (VEE to VDD) accommodates ±5V biopotential swings; low crosstalk prevents artifact coupling between channels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog crosspoint switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CD22M3494MQZ | Identical electrical specs and functionality; differs only in PLCC-44 lead pitch (Mitel-compatible vs. SGS-compatible) | Requires PCB layout change: Mitel lead pattern has different pad spacing and corner lead offset | Select CD22M3494MQZ only when redesigning for Mitel-legacy footprints or sourcing constraints dictate Mitel-compatible stock |
| MT8816 | Same 16×8 architecture and pinout; higher typical rON (85 Ω @ 12V) and lower bandwidth (30 MHz) | Suitable for voice-band-only systems; not recommended for >5 MHz video or precision instrumentation | Choose MT8816 only if legacy MT8816 design reuse is mandatory and performance margin allows higher rON and reduced bandwidth |
Compared with CD22M3494MQZ, CD22M3494SQZ offers identical switching performance but requires SGS-lead-compatible PCB layout; versus MT8816, it provides 20 MHz higher bandwidth and 20 Ω lower rON-critical for video fidelity and measurement accuracy in new designs.
Availability
CD22M3494SQZ is available at Aetrix Electronics and suitable for PBX infrastructure, broadcast video routing, automated test equipment, and medical signal multiplexing requiring stable component supply across extended product lifecycles.
Supply support for CD22M3494SQZ 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
Intersil Corporation (now part of Renesas Electronics) is a U.S.-based semiconductor designer specializing in high-performance analog and mixed-signal ICs for industrial, communications, and computing markets.
The CD22M3494 product line was engineered for high-density analog signal routing in telecom switching systems, emphasizing rail-to-rail operation, low crosstalk, and robust latch-up immunity for mission-critical infrastructure.
FAQ
What is the maximum operating supply voltage for CD22M3494SQZ?
The CD22M3494SQZ supports a DC supply voltage (VDD) range of 4V to 15V referenced to VEE, with absolute maximum rating of −0.5V to 16V. Operation above 15V is not guaranteed and may exceed safe operating area limits per the datasheet's Absolute Maximum Ratings table on page 4.
Does CD22M3494SQZ support negative analog input voltages?
Yes, CD22M3494SQZ supports analog input voltages spanning the full supply range from VEE to VDD. When VEE is biased at −5V and VDD at +5V, the device passes signals from −5V to +5V without clipping-enabling true bipolar signal routing in instrumentation and telecom applications.
Can multiple CD22M3494SQZ devices be connected to form a larger switch matrix?
Yes, CD22M3494SQZ includes a dedicated CS (Chip Select) input that enables cascading. By tying CS high on one device and low on others, up to 16 CD22M3494SQZ units can be combined into a 16×128 or custom-sized matrix, with address decoding handled externally or via additional logic.
What is the guaranteed ON-resistance matching specification for CD22M3494SQZ?
CD22M3494SQZ guarantees ΔrON ≤ 10 Ω maximum between any two switches at VDD = 12V and TA = −40°C to +85°C. This tight matching ensures consistent gain and phase response across all 128 channels-essential for balanced multi-channel systems like audio mixers or phased-array sensors.
Is CD22M3494SQZ RoHS compliant and lead-free?
Yes, CD22M3494SQZ is Pb-free and RoHS compliant per Intersil's documentation (FN2793 Rev 8.00, page 1). It uses 100% matte tin plate termination finish and meets IPC/JEDEC J-STD-020 reflow requirements for lead-free soldering processes.
CD22M3494SQZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- *
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- -
- Number of Circuits:
- -
- On-State Resistance (Max):
- -
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- -
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- -
- -3db Bandwidth:
- -
- Charge Injection:
- -
- Channel Capacitance (CS(off), CD(off)):
- -
- Current - Leakage (IS(off)) (Max):
- -
- Crosstalk:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-PLCC (16.58x16.58)
CD22M3494SQZ FAQ
1.How can I place an order for CD22M3494SQZ through Aetrix?
Please submit a Request for Quotation (RFQ) for CD22M3494SQZ 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 CD22M3494SQZ reliable?
The price and inventory of CD22M3494SQZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD22M3494SQZ is usually 5 days.
3.What payment methods are accepted for CD22M3494SQZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD22M3494SQZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD22M3494SQZ?
CD22M3494SQZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD22M3494SQZ 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 CD22M3494SQZ?
For technical support, including CD22M3494SQZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD22M3494SQZ requirements.
6.How does Aetrix verify that CD22M3494SQZ is sourced from the original manufacturer or authorized distributors?
All CD22M3494SQZ 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 CD22M3494SQZ meets industry standards.
7.What is the process for return or replacement of CD22M3494SQZ?
All CD22M3494SQZ units undergo pre-shipment inspection (PSI). If there is an issue with CD22M3494SQZ, 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 CD22M3494SQZ part is unused and in its original packaging.
Return procedure for CD22M3494SQZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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