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Vishay Siliconix DG221BDJ-E3
- Part No.:
- DG221BDJ-E3
- Manufacturer:
- Vishay Siliconix
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
DG221BDJ-E3.pdf
- Description:
- IC SWITCH SPST-NCX4 90OHM 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,857
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Product details
Overview
DG221BDJ-E3 from Vishay Siliconix is a quad SPST CMOS analog switch with integrated latches, designed for precision signal routing in µP-based systems. It features 60 Ω typical on-resistance, ±15 V analog signal range, 150 ns minimum write pulse width, and operates across –40 °C to +85 °C. Used in data acquisition and automatic test equipment for reliable bidirectional switching.
For engineers reviewing the DG221BDJ-E3 datasheet, DG221BDJ-E3 pinout, DG221BDJ-E3 application, or DG221BDJ-E3 equivalent, key selection criteria include latch-controlled simultaneous switching, true bidirectional analog performance, 20 mA continuous channel current capability, and compatibility with TTL-level digital control under wide supply voltage ranges.
Technical Context
The DG221BDJ-E3 implements four independent SPST switches, each with a transparent latch enabled by a common WR (Write) input. Latch operation allows memory-mapped addressing as a single byte, enabling synchronous switching of all channels via parallel digital inputs (IN1–IN4).
It integrates an on-chip 5 V regulator for stable logic interface operation regardless of V+ and V– supply levels, and uses epitaxial isolation to prevent latchup. Signal paths support full bidirectional conduction with clamping diodes protecting against overvoltage transients on S/D/IN pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | ±15 V - supports rail-to-rail bipolar signal switching without clipping |
| rDS(on) Typical | 60 Ω - enables low insertion loss and minimal signal distortion in precision analog paths |
| Continuous Channel Current | 20 mA - sufficient for driving instrumentation amplifiers and moderate-impedance loads |
| Turn-On/Off Time | 550 ns / 340 ns - meets timing requirements for high-speed µP bus interfacing |
| Input Logic Thresholds | VIL ≤ 0.8 V, VIH ≥ 2.4 V - ensures robust TTL compatibility across temperature and supply variation |
| Charge Injection | 20 pC - limits voltage glitch amplitude in sample-and-hold and multiplexer applications |
| Off-Isolation | 70 dB at 100 kHz - provides effective channel-to-channel signal rejection in multi-channel systems |
Pinout & Package
Package: 16-pin plastic DIP (JEDEC MS-012), body dimensions 10.0 mm × 4.0 mm × 3.3 mm, lead pitch 1.27 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1–IN4 | Digital latch input | Controls ON/OFF state of corresponding switch; latched when WR transitions low |
| WR | Write enable | Active-low control that captures IN1–IN4 states and updates all latches simultaneously |
| S1–S4 | Analog source terminal | Bidirectional switch terminal connected to signal source; clamped to V+/V− by internal diodes |
| D1–D4 | Analog drain terminal | Bidirectional switch terminal connected to load or next stage; same clamping protection as Sx |
| V+, V− | Analog supply rails | Define analog signal swing range; support ±5 V to ±15 V operation |
| GND | Digital ground reference | Reference for TTL-compatible logic inputs and on-chip 5 V regulator |
Key Features
| Feature | Design Value |
|---|---|
| Latch-controlled parallel addressing | Enables simultaneous configuration of all four switches as one data byte-reducing µP I/O overhead and eliminating sequencing delays |
| On-chip 5 V regulator | Maintains consistent logic interface performance across varying V+/V− supplies-eliminates need for external level-shifting circuitry |
| True bidirectional analog path | Supports signal flow in either direction with matched rDS(on) and capacitance-essential for instrumentation and sensor interface designs |
| Epitaxial latchup immunity | Guarantees robust operation in noisy industrial environments where transient-induced latchup could disrupt system reliability |
| Clamped analog terminals | Internal diodes limit S/D/IN pin voltages to V+ +2 V / V− −2 V-protecting against ESD and overvoltage events without external components |
Applications
| Medical Instrumentation | Data Acquisition Systems |
|---|---|
Use Scenario: Multiplexing analog sensor outputs (ECG, EEG, pressure transducers) into a shared ADC channel. IC Role / Device Role / Timing Role: Quad SPST analog switch with latched control ensures synchronized channel selection and eliminates sampling skew between sensors. Use Value: 60 Ω rDS(on) and 20 pC charge injection preserve signal fidelity and baseline stability during rapid channel scanning. | Use Scenario: Routing calibrated reference voltages and sensor signals to precision measurement front-ends. IC Role / Device Role / Timing Role: Provides isolated, low-leakage signal paths (±100 nA off-leakage) with programmable memory mapping for repeatable calibration sequences. Use Value: ±15 V analog range and 70 dB off-isolation prevent crosstalk between high-accuracy reference and noisy sensor lines. |
| Automatic Test Equipment | Communication Systems |
Use Scenario: Configuring stimulus/sense paths for IC functional testing using µP-controlled switching matrices. IC Role / Device Role / Timing Role: Latch-based architecture allows fast, deterministic reconfiguration of test fixtures without bus contention or timing jitter. Use Value: 150 ns write pulse width and 550 ns turn-on time support high-throughput test cycles with sub-microsecond path setup. | Use Scenario: Selecting between multiple RF front-end gain stages or filter banks in baseband signal conditioning. IC Role / Device Role / Timing Role: Bidirectional analog switch handles both transmit and receive signal paths with matched on-capacitance (29 pF) and off-capacitance (8–9 pF). Use Value: Low interchannel crosstalk (90 dB) and high off-isolation maintain signal integrity across adjacent frequency bands in multi-channel radios. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad SPST analog switch with latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4617CPD+ | Higher rDS(on) (100 Ω typ), no on-chip regulator, requires external 5 V logic supply | Lacks integrated voltage regulation-requires additional power rail management in mixed-supply systems | Prefer when board space is constrained and external 5 V is already available; avoid if V+/V− vary widely |
| ADG421BNZ | Lower leakage (±10 pA off-leakage), but no latch function-requires continuous digital control | Not latchable; unsuitable for memory-mapped or burst-mode switching architectures | Select only for low-leakage DC-coupled applications where µP I/O bandwidth permits real-time bit-banging |
Compared with MAX4617CPD+ and ADG421BNZ, the DG221BDJ-E3 uniquely combines latch-based parallel control, on-chip 5 V regulation, and ±15 V analog range-making it optimal for µP-based systems requiring deterministic, low-overhead analog routing without auxiliary logic or regulators.
Availability
DG221BDJ-E3 is available at Aetrix Electronics and suitable for medical instrumentation, automatic test equipment, and communication systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for DG221BDJ-E3 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
Vishay Siliconix is a global leader in discrete semiconductors and passive components, specializing in high-reliability, high-performance devices for industrial, automotive, and computing applications.
The DG221BDJ-E3 belongs to Vishay's precision analog switch product line, engineered for applications demanding low on-resistance, latch-controlled operation, and robust signal integrity in µP-interfaced instrumentation and test systems.
FAQ
What is the maximum analog signal voltage range supported by the DG221BDJ-E3?
The DG221BDJ-E3 supports an analog signal range of ±15 V when operated with V+ = +15 V and V− = −15 V. This range is confirmed in the Absolute Maximum Ratings table and Specification section of the official Vishay datasheet (Document Number: 71616). Operation at reduced supply voltages (e.g., ±10 V or +10 V/−5 V) proportionally scales the usable analog range, as detailed in the Application Hints table on page 5.
Does the DG221BDJ-E3 require an external 5 V supply for its digital interface?
No, the DG221BDJ-E3 does not require an external 5 V supply. It integrates an on-chip 5 V regulator powered from V+ and V−, enabling direct TTL-compatible logic interfacing (VIH ≥ 2.4 V, VIL ≤ 0.8 V) across its full operating temperature range (−40 °C to +85 °C), as specified in the Functional Description and Applications Hints sections of the DG221BDJ-E3 datasheet.
How does the WR pin function in the DG221BDJ-E3?
The WR (Write) pin on the DG221BDJ-E3 is an active-low control that captures and latches the states of IN1–IN4 simultaneously. When WR transitions from high to low, the current logic levels on IN1–IN4 are stored in internal latches and applied to the corresponding switches. While WR remains low, the switches retain their state regardless of subsequent INx changes-enabling memory-mapped, glitch-free switching as described in the Truth Table and Functional Block Diagram.
Can the DG221BDJ-E3 be used in bidirectional analog signal paths?
Yes, the DG221BDJ-E3 supports true bidirectional analog signal flow in the ON state, as explicitly stated in the DESCRIPTION section ("The device features true bidirectional performance in the on condition"). Its symmetrical rDS(on), matched S/D terminal characteristics, and absence of intrinsic polarity make it suitable for AC-coupled and DC-coupled signal routing in either direction without performance degradation.
What is the thermal derating behavior of the DG221BDJ-E3 in its DIP package?
The DG221BDJ-E3 in the 16-pin plastic DIP package has a power dissipation rating of 470 mW at 25 °C, with linear derating of 6.5 mW/°C above 25 °C (per Note c in the Absolute Maximum Ratings table). This means usable power drops to approximately 275 mW at +85 °C ambient, requiring careful thermal design in high-current or high-density layouts per the manufacturer's thermal guidelines in Document Number: 71616.
DG221BDJ-E3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Last Time Buy
- Switch Circuit:
- SPST - NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 90Ohm
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- 13V ~ 18V
- Voltage - Supply, Dual (V±):
- ±7V ~ 18V
- Switch Time (Ton, Toff) (Max):
- 550ns, 340ns
- -3db Bandwidth:
- -
- Charge Injection:
- 20pC
- Channel Capacitance (CS(off), CD(off)):
- 8pF, 9pF
- Current - Leakage (IS(off)) (Max):
- 5nA
- Crosstalk:
- -90dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-PDIP
DG221BDJ-E3 FAQ
1.How can I place an order for DG221BDJ-E3 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG221BDJ-E3 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 DG221BDJ-E3 reliable?
The price and inventory of DG221BDJ-E3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG221BDJ-E3 is usually 5 days.
3.What payment methods are accepted for DG221BDJ-E3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG221BDJ-E3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG221BDJ-E3?
DG221BDJ-E3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG221BDJ-E3 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 DG221BDJ-E3?
For technical support, including DG221BDJ-E3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG221BDJ-E3 requirements.
6.How does Aetrix verify that DG221BDJ-E3 is sourced from the original manufacturer or authorized distributors?
All DG221BDJ-E3 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 DG221BDJ-E3 meets industry standards.
7.What is the process for return or replacement of DG221BDJ-E3?
All DG221BDJ-E3 units undergo pre-shipment inspection (PSI). If there is an issue with DG221BDJ-E3, 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 DG221BDJ-E3 part is unused and in its original packaging.
Return procedure for DG221BDJ-E3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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