MAX320, MAX321, MAX322 Precision, Dual Supply, SPST, Analog CMOS Switches

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The MAX320/MAX321/MAX322 are precision, dual, SPST analog switches designed to operate from ±3V to ±8V dual supplies. The MAX320 has two normally open (NO) switches and the MAX321 has two normally closed (NC) switches. The MAX322 has one NO and one NC switch. Low power consumption (1.25mW) makes these parts ideal for battery-powered equipment. They offer low leakage currents (100pA max) and fast switching speeds (t_ON = 150ns max, t_OFF = 100ns max).

The MAX320 series, powered from ±5V supplies, offers 35Ω max on-resistance (R_ON), 2Ω max matching between channels, and 4Ω max R_ON flatness.

These switches also offer 5pC max charge injection and a minimum of 2000V ESD protection per Method 3015.7. For equivalent devices specified for single-supply operation, see the MAX323/MAX324/MAX325 data sheet. For quad versions of these switches, see the MAX391/MAX392/MAX393 data sheet.

Key Features

Applications/Uses

Low On-Resistance, 35Ω max (16Ω typical)
R_ON Matching Between Channels < 2Ω
R_ON Flatness < 4Ω
Guaranteed Charge Injection < 5pC
Bipolar Supply Operation (±3V to ±8V)
Low Power Consumption, < 1.25mW
Low Leakage Current Over Temperature, < 2.5nA at +85°C
Fast Switching, t_ON < 150ns, t_OFF < 100ns
Guaranteed Break-Before-Make (MAX322 only)

	±5V DACs and ADCs
	Audio and Video Switching
	Battery-Powered Applications
	Communication Systems
	Guidance and Control Systems
	Heads-Up Displays
	Military Radios
	PBX, PABX
	Sample-and-Hold Circuits
	Test Equipment

Key Specifications: Switches and Multiplexers (Mid Voltage)

Part Number

Configuration

Number of Channels

Normally (Open/Closed)

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

Price^**

MAX320

SPST

Open

2.7

0.1

150

100

Yes

Ceramic DIP/8
PDIP/8
SOIC/8
uMAX/8

$0.99 @ 1k

MAX321

Closed

$0.99 @ 1k

MAX322

Open/Closed

$0.99 @ 1k

See All Switches and Multiplexers (Mid Voltage) (286)

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.