MAX4638 Datasheet, PDF (1/15 Pages) Maxim Integrated Products – 3.5Ω, Single 8:1 and Dual 4:1, Low-Voltage Analog Multiplexers

19-1782; Rev 1; 3/02
3.5Ω, Single 8:1 and Dual 4:1,
Low-Voltage Analog Multiplexers
General Description
The MAX4638/MAX4639 are single 8:1 and dual 4:1
CMOS analog multiplexers/demultiplexers (muxes/
demuxes). Each mux operates from a single +1.8V to
+5V supply or dual ±2.5V supplies. These devices fea-
ture 3.5Ω on-resistance (R_ON) when powered with a
single +5V supply and have -75dB of off-isolation and
-85dB crosstalk from the output to each off channel.
The switching times are 18ns t_ON and 7ns t_OFF. They
feature a -3dB 85MHz bandwidth and a guaranteed
0.25nA leakage current at +25°C.
A +1.8V to +5.5V operating range makes the MAX4638/
MAX4639 ideal for battery-powered, portable instru-
ments. All channels guarantee break-before-make
switching. These parts feature bidirectional operation
and can handle Rail-to-Rail^® analog signals. All control
inputs are TTL/CMOS-logic compatible. Decoding is in
standard BCD format, and an enable input is provided to
simplify cascading of devices. These devices are avail-
able in small 16-pin QFN, TSSOP and SOIC packages,
as well as a 20-pin QFN package.
Applications
Automatic Test Equipment
Low-Voltage Data-Acquisition Systems
Audio and Video Signal Routing
Medical Equipment
Battery-Powered Equipment
Relay Replacement
Features
o Guaranteed R_ON
3.5Ω (+5V or ±2.5V Supplies)
6Ω (+3V Supply)
o Guaranteed 0.4Ω R_ON Match Between Channels
o Guaranteed 1Ω R_ON Flatness Over Signal Range
o Guaranteed Low Leakage Currents
0.25nA at +25°C
o Switching Times: t_ON = 18ns, t_OFF = 7ns
o +1.8V to +5.5V Single-Supply Operation
±2.5V Dual-Supply Operation
o Rail-to-Rail Signal Handling
o TTL/CMOS-Logic Compatible
o Crosstalk: -80dB (1MHz)
o Off-Isolation: -60dB (10MHz)
Ordering Information
PART
MAX4638EGE
MAX4638EUE
MAX4638ESE
MAX4638EGP
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
16 QFN (4 ✕ 4)
16 TSSOP
16 SO
20 QFN (4 ✕ 4)
Ordering Information continued at end of data sheet.
Pin Configurations/Functional Diagrams
MAX4638
A0 1
EN 2
V- 3
NO1 4
NO2 5
NO3 6
NO4 7
COM ₈
LOGIC
16 A1
15 A2
14 GND
13 V+
12 NO5
11 NO6
10 NO7
9 NO8
TSSOP/SO
TOP VIEW
MAX4639
A0 1
EN 2
V- 3
NO1A 4
NO2A 5
NO3A 6
NO4A 7
COMA ₈
LOGIC
16 A1
15 GND
14 V+
13 NO1B
12 NO2B
11 NO3B
10 NO4B
9 COMB
TSSOP/SO
Rail-to-Rail is a Registered Trademark of Nippon Motorola, Ltd.
________________________________________________________________ Maxim Integrated Products 1
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