MAX4649 45 Ohm SPDT Analog Switch in SOT23-8

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The MAX4649 is a dual-supply, single-pole/double-throw (SPDT) analog switch. On-resistance is 45Ω max and flat (7Ω max) over the specified signal range. The MAX4649 can handle rail-to-rail analog signals, and conducts analog or digital signals equally well in either direction. This switch operates from a single +9V to +36V supply, or from ±4.5V to ±20V dual supplies. The primary application areas are in the switching and routing of signals in telecommunications and test equipment.

The MAX4649 features a switch transition time of 130ns max at +25°C, and a guaranteed break-before-make switching time of 5ns. Off-leakage current is only 2nA max at +25°C.

The MAX4649 is available in a tiny 8-pin SOT23 package.

Key Features

Applications/Uses

Low On-Resistance 45Ω max ±15V Supplies
5Ω max R_ON Match Between Channels
Guaranteed R_ON Flatness Over Specified Signal Range (7Ω max)
V_L Logic Supply Not Required
Rail-to-Rail Signal Handling
+9V to +36V Single Supply Operation
±4.5V to ±20V Dual Supply Operation
Low Crosstalk: -92dB at 1MHz
High Off-Isolation: -92dB at 1MHz
TTL/CMOS-Compatible Control Inputs

	Bridges
	High-Speed Access (Telecom)
	Modems
	Network Hubs, Switches, Routers
	Routers/Switches
	Telecom Switches
	X-Ray and Ultrasound Diagnostics

Key Specifications: Switches and Multiplexers (Mid Voltage)

Part Number

Configuration

Number of Channels

V_SUPPLY, Single (min) (V)

V_SUPPLY, Single (max) (V)

V_SUPPLY, Dual (min) (±V)

V_SUPPLY, Dual (max) (±V)

R_ON (max) (Ω)

I_{L (OFF)} (max) (nA)

t_ON (max) (nS)

t_OFF (max) (nS)

Q_INJECTION (pC)

C_ON (pF)

C_OFF (pF)

V_ISO, Off-Isolation (dB)

V_CT, Crosstalk (dB)

ΔR_ON (max) (Ω)

R_FLAT(ON) (max) (Ω)

RoHS Available

Package

Smallest Available Package (max w/pins) (mm²)

Price^**

MAX4649

SPDT

4.5

130

Yes

SOT-23/8

$1.20 @ 1k

See All Switches and Multiplexers (Mid Voltage) (284)

Notes:
^**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.