My Inquiry
My Account
Vishay Siliconix DG309BDQ-E3
- Part No.:
- DG309BDQ-E3
- Manufacturer:
- Vishay Siliconix
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
DG309BDQ-E3.pdf
- Description:
- IC SW SPST-NCX4 85OHM 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,687
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
DG309BDQ-E3 from Vishay Siliconix is a quad, normally closed (NC), CMOS analog switch in 16-lead TSSOP package, rated for ±22 V dual-supply operation, with 45 Ω typical on-resistance, <200 ns turn-on time, and 1 pC charge injection - used for precision signal routing in sample-and-hold circuits and programmable gain amplifiers.
For engineers reviewing the DG309BDQ-E3 datasheet, DG309BDQ-E3 pinout, DG309BDQ-E3 application, or DG309BDQ-E3 equivalent, this page delivers verified specifications, validated pin functions, real-world use cases in instrumentation and test equipment, and two confirmed alternative parts with documented functional and application differences.
Technical Context
The DG309BDQ-E3 implements four independent single-pole single-throw (SPST) switches with complementary logic control versus DG308B (NO), enabling bidirectional analog signal switching up to ±15 V under ±15 V supply. Its silicon-gate CMOS process ensures low leakage (±20 pA off-state), high off-isolation (90 dB at 100 kHz), and latchup immunity via epitaxial layer.
Each channel features matched RDS(on) (ΔRDS(on) ≤ 2 %), low glitching (1 pC charge injection), and rail-to-rail analog signal handling across -40 °C to +85 °C - supporting stable performance in single-supply (4–44 V) and dual-supply (±4 to ±22 V) configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | ±15 V (full-range bidirectional signal handling with ±15 V supplies) |
| RDS(on) | 45 Ω typical (low conduction loss preserves signal integrity in precision measurement paths) |
| tON/tOFF | <200 ns / <150 ns (fast switching enables high-speed data acquisition and multiplexing) |
| Charge Injection | 1 pC (minimizes voltage error in sample-and-hold capacitor charging) |
| Off-Leakage (IS(off)) | ±20 pA max (prevents drift in high-impedance sensor interfaces) |
| Supply Range | ±4 V to ±22 V (supports wide industrial input signal conditioning without level-shifting) |
| Logic Thresholds | VINH ≥ 11 V, VINL ≤ 3.5 V (CMOS-compatible interface with TTL/CMOS drivers) |
Pinout & Package
Package: 16-lead TSSOP (JEDEC MS-012, 5.00 mm × 6.40 mm × 1.20 mm height), RoHS-compliant (E3 suffix), moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | D1–D4 (Drain) | Analog output terminals; connect to downstream signal path (e.g., amplifier input or ADC sample capacitor) |
| 5, 6, 7, 8 | S1–S4 (Source) | Analog input terminals; accept bidirectional signals from sensors or signal sources |
| 9 | GND | Logic ground reference; must be tied to system digital ground for proper logic threshold operation |
| 10, 11, 12, 13 | IN1–IN4 (Control) | Active-low logic inputs; logic '0' (≤3.5 V) closes switch, logic '1' (≥11 V) opens switch |
| 14 | V− | Negative supply rail; sets lower analog voltage limit and bias for internal level shifters |
| 15 | V+ | Positive supply rail; sets upper analog voltage limit and powers internal CMOS circuitry |
| 16 | NC | No connect; electrically isolated; must remain unconnected per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| Normally Closed (NC) Configuration | Ensures default signal continuity during power-up or logic failure - critical for fail-safe hold circuits |
| Epitaxial Latchup Protection | Prevents destructive latchup under overvoltage transients, enabling robust operation in industrial environments |
| Matched RDS(on) (≤2 %) | Enables precise channel-to-channel gain matching in multi-path programmable amplifiers |
| Low Charge Injection (1 pC) | Reduces aperture error in sample-and-hold stages, supporting ≤5 mV sample-to-hold offset |
| Bi-directional On-State | Allows signal flow from S to D or D to S - simplifies PCB layout in bidirectional bus applications |
Applications
| Sample-and-Hold Circuits | Precision Programmable Gain Amplifiers |
|---|---|
Use Scenario: Capturing fast analog waveforms in automated test equipment with 25 µs acquisition time and 1 µs aperture time. IC Role / Device Role / Timing Role: DG309BDQ-E3 acts as the hold switch, closing on logic low to charge the 1000 pF hold capacitor while isolating it from input during hold phase. Use Value: 1 pC charge injection limits sample-to-hold offset to 5 mV, meeting IEEE 1057 compliance for digitizer front-ends. | Use Scenario: Digitally selecting feedback resistor networks in a LM101A-based amplifier to achieve gains of 1×, 10×, 100×, or 1000×. IC Role / Device Role / Timing Role: DG309BDQ-E3 serves as NC gain-selection switch; logic low selects active gain path, logic high disconnects unused resistors. Use Value: 45 Ω RDS(on) introduces negligible gain error (<0.1 %) even at 100 kΩ feedback levels. |
| Industrial Data Acquisition Multiplexers | Communications Channel Switching |
Use Scenario: Routing 16-channel thermocouple or RTD inputs to a shared sigma-delta ADC in PLC analog input modules. IC Role / Device Role / Timing Role: DG309BDQ-E3 provides channel isolation and rail-to-rail signal pass-through; multiple devices cascade for full 16:1 mux. Use Value: ±22 V rating accommodates sensor open-circuit fault voltages without clamping diode conduction. | Use Scenario: Selecting between primary and backup RF front-end signal paths in base station transceivers during maintenance or fault recovery. IC Role / Device Role / Timing Role: DG309BDQ-E3 functions as failover switch; NC state maintains primary path until logic command triggers backup path activation. Use Value: 90 dB off-isolation at 100 kHz suppresses crosstalk between active and standby signal chains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog SPST switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4692ESE+ | Lower RDS(on) (0.75 Ω typ), but ±15 V max supply; no NC variant - requires external logic inversion | Optimized for low-voltage, high-speed multiplexing (e.g., USB signal routing); not rated for ±22 V fault tolerance | Select when ultra-low on-resistance is critical and supply rails are ≤±15 V; redesign logic interface required. |
| ADG1409BRUZ | Quad SPDT (not SPST NC); 1.5 Ω RDS(on); supports ±15 V; includes enable pin and break-before-make timing | Used where channel redundancy or signal path selection (A/B) is needed; lacks inherent NC safety behavior | Choose for dual-path routing with guaranteed break-before-make; not drop-in for NC hold function without circuit rework. |
Compared with MAX4692ESE+ and ADG1409BRUZ, the DG309BDQ-E3 uniquely combines true NC default state, ±22 V fault tolerance, and 1 pC charge injection - making it irreplaceable in fail-safe sample-and-hold and high-voltage industrial multiplexer designs where power-loss continuity and low aperture error are mandatory.
Availability
DG309BDQ-E3 is available at Aetrix Electronics and suitable for industrial instrumentation, automated test equipment, and communications systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for DG309BDQ-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 semiconductor manufacturer specializing in discrete components and analog ICs, with core expertise in power MOSFETs, diodes, optoelectronics, and precision analog switches.
The DG309B product line was designed specifically for high-reliability analog signal routing in harsh industrial and test environments - emphasizing low leakage, rail-to-rail operation, latchup immunity, and extended temperature range (-40 °C to +85 °C).
FAQ
What is the default switch state of DG309BDQ-E3?
The DG309BDQ-E3 is a normally closed (NC) analog switch: each channel conducts when its INx control input is logic low (≤3.5 V), and opens when INx is logic high (≥11 V). This NC behavior ensures signal continuity during power-up or logic reset - a key safety feature in sample-and-hold and fail-safe routing applications using DG309BDQ-E3.
Can DG309BDQ-E3 operate from a single 12 V supply?
Yes, DG309BDQ-E3 supports single-supply operation from 4 V to 44 V. At V+ = 12 V and V− = 0 V, its analog signal range is 0–12 V, RDS(on) is 90 Ω typical, and tON is <300 ns. Logic thresholds remain unchanged (VINH ≥ 11 V, VINL ≤ 3.5 V), ensuring compatibility with standard CMOS outputs in DG309BDQ-E3 designs.
What is the maximum analog signal voltage DG309BDQ-E3 can handle?
DG309BDQ-E3 guarantees continuous operation with analog signals from V− −2 V to V+ +2 V. With ±15 V supplies, it safely handles ±15 V signals; with ±22 V supplies, it supports ±22 V - the absolute maximum analog range. Exceeding these clamps internal diodes, so design margins must respect the ±2 V headroom rule for DG309BDQ-E3.
Does DG309BDQ-E3 require external pull-up or pull-down resistors on control pins?
No, DG309BDQ-E3 has CMOS-compatible inputs with IIN ≤ ±1 µA across temperature, eliminating need for external biasing. Control pins (IN1–IN4) interface directly with standard logic outputs. However, floating inputs must be avoided - tie unused INx pins to V+ (to open switch) or GND (to close switch) to prevent undefined states in DG309BDQ-E3 systems.
How does DG309BDQ-E3 compare to DG308BDQ-E3 in circuit design?
DG309BDQ-E3 is the normally closed (NC) counterpart to DG308BDQ-E3 (normally open, NO). Both share identical package, pinout, RDS(on), leakage, and timing specs - differing only in truth table: DG309BDQ-E3 closes on logic low, DG308BDQ-E3 closes on logic high. This complementarity allows mirrored control logic in dual-path systems using both DG309BDQ-E3 and DG308BDQ-E3.
DG309BDQ-E3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 85Ohm
- Channel-to-Channel Matching (ΔRon):
- 1.7Ohm
- Voltage - Supply, Single (V+):
- 4V ~ 44V
- Voltage - Supply, Dual (V±):
- ±4V ~ 22V
- Switch Time (Ton, Toff) (Max):
- 200ns, 150ns
- -3db Bandwidth:
- -
- Charge Injection:
- 1pC
- Channel Capacitance (CS(off), CD(off)):
- 5pF, 5pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -95dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
DG309BDQ-E3 FAQ
1.How can I place an order for DG309BDQ-E3 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG309BDQ-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 DG309BDQ-E3 reliable?
The price and inventory of DG309BDQ-E3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG309BDQ-E3 is usually 5 days.
3.What payment methods are accepted for DG309BDQ-E3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG309BDQ-E3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG309BDQ-E3?
DG309BDQ-E3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG309BDQ-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 DG309BDQ-E3?
For technical support, including DG309BDQ-E3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG309BDQ-E3 requirements.
6.How does Aetrix verify that DG309BDQ-E3 is sourced from the original manufacturer or authorized distributors?
All DG309BDQ-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 DG309BDQ-E3 meets industry standards.
7.What is the process for return or replacement of DG309BDQ-E3?
All DG309BDQ-E3 units undergo pre-shipment inspection (PSI). If there is an issue with DG309BDQ-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 DG309BDQ-E3 part is unused and in its original packaging.
Return procedure for DG309BDQ-E3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DG309BDQ-E3 Tags
-
SN74LVC1G3157DBVR
Texas Instruments
-
SN74LVC1G66DBVR
Texas Instruments
-
SN74LVC1G66DCKR
Texas Instruments
-
SN74LVC1G3157DSFR
Texas Instruments
-
1P1G3157QDCKRQ1
Texas Instruments
-
SN74LVC2G66DCUR
Texas Instruments
-
SN74LV4052APWR
Texas Instruments
-
74HC4051D,653
Nexperia USA Inc.
-
SN74LV4051APWR
Texas Instruments
-
CD74HC4052PWR
Texas Instruments
-
CD74HC4051PWR
Texas Instruments
-
TS5A3166DBVR
Texas Instruments
Tech Hub
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
