DG449DS-T1-E3

$1.25

Description：IC SWITCH SPDT X 1 45OHM SOT23-8
Series：-

SKU:0da44d24dd00 Category: Analog Switches, Multiplexers, Demultiplexers Brand: Vishay Siliconix

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Product introduction

Product Detailed Parameters

Description：IC SWITCH SPDT X 1 45OHM SOT23-8
Series：-
Mfr：Vishay Siliconix
Package：Tape & Reel (TR),Cut Tape (CT)
Switch Circuit：SPDT
Multiplexer/Demultiplexer Circuit：2:01
On-State Resistance (Max)：45Ohm
Channel-to-Channel Matching (ΔRon)：5Ohm (Max)
Voltage - Supply, Single (V+)：7V ~ 36V
Voltage - Supply, Dual (V±)：±4.5V ~ 20V
Switch Time (Ton, Toff) (Max)：146ns, 104ns
-3db Bandwidth：-
Charge Injection：5pC
Channel Capacitance (CS(off), CD(off))：8pF
Current - Leakage (IS(off)) (Max)：1nA
Crosstalk：-80dB @ 1MHz
Operating Temperature：-40°C ~ 85°C (TA)
Mounting Type：Surface Mount
Package / Case：SOT-23-8
Supplier Device Package：SOT-23-8
Number of Circuits：1
Grade：-
Qualification：-

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DG449DS-T1-E3

Overview

The DG449DS-T1-E3 is a high-voltage single SPDT analog switch manufactured by Vishay Siliconix in an SOT-23-8 package. It supports dual supply operation from ±4.5 V to ±20 V or single supply from +7 V to +36 V. The device features a maximum on-resistance of 45 Ω at room temperature and up to 57 Ω across the full operating range. Switching times are specified with a maximum turn-on time of 146 ns and turn-off time of 104 ns under dual supply conditions. Leakage currents are typically 1 nA, with power supply current limited to 30 µA.

Feature Summary

Supports rail-to-rail signal handling within the specified voltage ranges
Compatible with TTL and CMOS logic inputs without requiring a separate logic supply
Provides break-before-make switching action for reliable signal routing

Applications

Precision test equipment
Communications systems
Audio equipment
PC multimedia boards

Procurement Notes

Verify the component against the official Vishay datasheet Document Number 73897 to confirm specifications. Ensure the SOT-23-8 package matches the design requirements. Check RoHS compliance status as indicated in the ordering information. Validate that the operating temperature range meets the application needs.

Selection Notes

Select this component when a single-pole double-throw configuration is required in a compact surface-mount footprint. Consider the 45 Ω maximum on-resistance and 30 mA continuous current limits for signal path integrity. Verify that the input voltage levels align with the system's logic family. Evaluate thermal dissipation capabilities if operating near the upper temperature limit.

Part Context

This part belongs to the DG449 series of high-voltage analog switches. It is designed for applications requiring low distortion and wide dynamic range. The device integrates a single SPDT switch into a small SOT-23-8 package, making it suitable for space-constrained designs in industrial and military equipment.