MAX338, MAX339 8-Channel/Dual 4-Channel, Low-Leakage, CMOS Analog Multiplexers

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The MAX338/MAX339 are monolithic, CMOS analog multiplexers (muxes). The 8-channel MAX338 is designed to connect one of eight inputs to a common output by control of a 3-bit binary address. The dual, 4- channel MAX339 is designed to connect one of four inputs to a common output by control of a 2-bit binary address. Both devices can be used as either a mux or a demux. On-resistance is 400Ω max, and the devices conduct current equally well in both directions.

These muxes feature extremely low off leakages (less than 20pA at +25°C), and extremely low on-channel leakages (less than 50pA at +25°C). The new design offers guaranteed low charge injection (1.5pC typ) and electrostatic discharge (ESD) protection greater than 2000V, per method 3015.7. These improved muxes are pin-compatible upgrades for the industry-standard DG508A and DG509A. For similar Maxim devices with lower leakage and charge injection but higher on-resistance, see the MAX328 and MAX329.

The MAX338/MAX339 operate from a single +4.5V to +30V supply or from dual supplies of ±4.5V to ±20V. All control inputs (whether address or enable) are TTL compatible (+0.8V to +2.4V) over the full specified temperature range and over the ±4.5V to ±18V supply range. These parts are fabricated with Maxim's 44V silicon- gate process.

Key Features

Applications/Uses

On-Resistance, <400Ω max
Transition Time, <500ns
On-Resistance Match, <10Ω
NO-Off Leakage Current, <20pA at +25°C
1.5pC Charge Injection
Single-Supply Operation (+4.5V to +30V) Bipolar-Supply Operation (±4.5V to ±20V)
Plug-In Upgrade for Industry-Standard DG508A/DG509A
Rail-to-Rail Signal Handling
TTL/CMOS-Logic Compatible
ESD Protection >2000V, per Method 3015.7

	Communication Systems
	Data Acquisition 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

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)

Features

V_ISO, Off-Isolation (dB)

V_CT, Crosstalk (dB)

ΔR_ON (max) (Ω)

RoHS Available

Package

Price^**

MAX338

8:1 Mux

4.5

400

0.05

500

•	Chip Enable

Yes

Ceramic DIP/16
PDIP/16
QSOP/16
SOIC/16
THIN QFN/16

$2.39 @ 1k

MAX339

4:1 Mux

$2.39 @ 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.