Datasheet

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General Description

The MAX4534 (single 4-to-1) and MAX4535 (dual 2-to-

1) fault-protected multiplexers operate with ±4.5V to

±20V dual supplies or a +9V to +36V single supply.

These multiplexers feature fault-protected inputs, rail-

to-rail signal-handling capability, and overvoltage

clamping at 150mV beyond the rails. Both parts feature

±40V overvoltage protection with supplies off and ±25V

protection with supplies on. On-resistance is 400Ω max

and is matched between channels to 10Ω max. All digi-

tal inputs have TTL logic thresholds, ensuring

TTL/CMOS-logic compatibility when using a single

+12V or dual ±15V supplies.

Applications

Data-Acquisition Systems

Industrial and Process Control

Avionics

Signal Routing

Redundant/Backup Systems

Features

♦ ±40V Fault Protection with Power Off

±25V Fault Protection with ±15V Supplies

♦ No Power-Supply Sequencing Required

♦ All Channels Off with Power Off

♦ Rail-to-Rail Signal Handling

♦ Output Clamped to Appropriate Supply Voltage

During Fault Condition

♦ 1.0kΩ typ Output Clamp Resistance During

Overvoltage

♦ 400Ω max On-Resistance

♦ 20ns typ Fault Response Time

♦ ±4.5V to ±20V Dual Supplies

+9V to +36V Single Supply

♦ TTL/CMOS-Compatible Logic Inputs

MAX4534/MAX4535

Fault-Protected, High-Voltage,

Single 4-to-1/Dual 2-to-1 Multiplexers

________________________________________________________________ Maxim Integrated Products 1

GND

V+

NO3

NO1

V-

TOP VIEW

MAX4534

NO4

N.C.

COM

N.C.

NO2

TSSOP/SO/DIP

LOGIC

N.C.

GND

V+

NO1B

NO1A

V-

MAX4535

NO2B

N.C.

COMB

COMA

N.C.

NO2A

TSSOP/SO/DIP

LOGIC

19-1609; Rev 2; 5/05

Ordering Information

Pin Configurations

14 Narrow SO0°C to +70°CMAX4535CSD

14 TSSOP0°C to +70°C

MAX4535CUD

14 Plastic DIP-40°C to +85°CMAX4534EPD

14 Narrow SO-40°C to +85°CMAX4534ESD

14 TSSOP-40°C to +85°CMAX4534EUD

14 Plastic DIP

14 Narrow SO

14 TSSOP

PIN-PACKAGETEMP RANGE

0°C to +70°C

0°C to +70°CMAX4534CPD

MAX4534CSD

MAX4534CUD

PART

14 Plastic DIP-40°C to +85°CMAX4535EPD

14 Narrow SO-40°C to +85°CMAX4535ESD

14 TSSOP-40°C to +85°CMAX4535EUD

14 Plastic SO0°C to +70°CMAX4535CPD

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Summary of content (14 pages)

PAGE 1
9-1609; Rev 2; 5/05 Fault-Protected, High-Voltage, Single 4-to-1/Dual 2-to-1 Multiplexers The MAX4534 (single 4-to-1) and MAX4535 (dual 2-to1) fault-protected multiplexers operate with ±4.5V to ±20V dual supplies or a +9V to +36V single supply. These multiplexers feature fault-protected inputs, railto-rail signal-handling capability, and overvoltage clamping at 150mV beyond the rails. Both parts feature ±40V overvoltage protection with supplies off and ±25V protection with supplies on.
PAGE 2
MAX4534/MAX4535 Fault-Protected, High-Voltage, Single 4-to-1/Dual 2-to-1 Multiplexers ABSOLUTE MAXIMUM RATINGS (Voltages Referenced to GND) V+ ...........................................................................-0.3V to +44V V- ............................................................................-44V to +0.3V V+ to V-...................................................................-0.3V to +44V COM_, A_, EN (Note 1)........................ (V- - 0.3V) to (V+ + 0.3V) NO_ (Note 2)............
PAGE 3
Fault-Protected, High-Voltage, Single 4-to-1/Dual 2-to-1 Multiplexers (V+ = +15V, V- = -15V, VA_H = VENH = 2.4V, VA_L = VENL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.
PAGE 4
MAX4534/MAX4535 Fault-Protected, High-Voltage, Single 4-to-1/Dual 2-to-1 Multiplexers ELECTRICAL CHARACTERISTICS—Dual Supplies (continued) (V+ = +15V, V- = -15V, VA_H = VENH = 2.4V, VA_L = VENL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 3) PARAMETER SYMBOL CONDITIONS TA MIN TYP MAX UNITS ±20 V POWER SUPPLY Power-Supply Range V+, V- ±4.
PAGE 5
Fault-Protected, High-Voltage, Single 4-to-1/Dual 2-to-1 Multiplexers (V+ = +12V, V- = 0, VA_H = VENH = 2.4V, VA_L = VENL = 0.8V, TA = TMIN to TMIN, unless otherwise noted. Typical values are at TA = +25°C.
PAGE 6
ELECTRICAL CHARACTERISTICS—Single +12V Supply (continued) (V+ = +12V, V- = 0, VA_H = VENH = 2.4V, VA_L = VENL = 0.8V, TA = TMIN to TMIN, unless otherwise noted. Typical values are at TA = +25°C.
PAGE 7
Fault-Protected, High-Voltage, Single 4-to-1/Dual 2-to-1 Multiplexers 10n +25°C 500 -40°C 2 ICOM_ON 1n ICOM_OFF 100p 400 -55°C 300 10p -1 1p V+ = +12V V- = 0 100 0 INO_OFF 200 0 2 4 6 8 VCOM (V) 10 12 14 -3 -55 ENABLE ON/OFF-TIMES vs.
PAGE 8
Typical Operating Characteristics (continued) (V+ = +15V, V- = -15V, TA = +25°C, unless otherwise noted.) LOGIC-LEVEL THRESHOLD vs. SUPPLY VOLTAGE FREQUENCY RESPONSE BANDWIDTH -10 300 -30 LOSS (dB) I+ 200 100 IGND 0 -100 -50 CROSSTALK -70 I- OFF-ISOLATION -90 -250 2 4 6 8 10 12 14 DUAL SUPPLIES 2.0 SINGLE SUPPLY 1.5 1.0 0 0.01 0.
PAGE 9
Fault-Protected, High-Voltage, Single 4-to-1/Dual 2-to-1 Multiplexers MAX4534 (Single 4-to-1 Mux) PIN NAME MAX4535 (Dual 2-to-1 Mux) PIN FUNCTION NAME FUNCTION 1 A0 Address Bit 0 1 A0 Address Bit 0 2 EN Enable Input 2 EN Enable Input 3 V- Negative Supply Voltage 3 V- Negative Supply Voltage 4 NO1 Channel Input 1 (fault protected) 4 NO1A Channel Input 1A (fault protected) 5 NO2 Channel Input 2 (fault protected) 5 NO2A Channel Input 2A (fault protected) 6, 8, 9 N.C.
PAGE 10
MAX4534/MAX4535 Fault-Protected, High-Voltage, Single 4-to-1/Dual 2-to-1 Multiplexers NORMALLY OPEN SWITCH CONSTRUCTION V+ P2 HIGH FAULT P1 NO_ COM_ N1 LOW FAULT ON A_ MAX4534 MAX4535 GND N2 VESD DIODE Figure 1. Functional Diagram NO_ Input Voltage The maximum allowable input voltage for safe operation depends on whether supplies are on or off and on the load configuration at the COM output.
PAGE 11
Fault-Protected, High-Voltage, Single 4-to-1/Dual 2-to-1 Multiplexers Non-Fault-Protected Pins FETs N2 and P2 can source about ±10mA from V+ or V- to the COM_ pin in the fault condition (Figure 1). Ensure that if the COM_ pin is connected to a low impedance load, the 30mA absolute maximum current rating is never exceeded, both in normal and fault conditions. The GND, COM_, EN, and A_ pins do not have fault protection.
PAGE 12
Fault-Protected, High-Voltage, Single 4-to-1/Dual 2-to-1 Multiplexers MAX4534/MAX4535 Test Circuits/Timing Diagrams V+ V+ NO1 A1 +10V NO2, NO3 A0 MAX4534 +5V NO4 EN -10V COM GND VOUT V- 35pF LOGIC INPUT VA_ 50% 0 RL V- VNO__ V+ V+ 90% SWITCH OUTPUT VOUT +10V NO1B A0 tR < 20ns tF < 20ns +3V 90% VNO__ NO1A, NO2A +5V EN -10V NO2B MAX4535 GND tTRANS tTRANS COMB V- ON VOUT 35pF RL V- Figure 2.
PAGE 13
Fault-Protected, High-Voltage, Single 4-to-1/Dual 2-to-1 Multiplexers V+ VEN +3V V+ EN NO1–NO4 A0 +10V tR < 20ns tF < 20ns +3V LOGIC INPUT VA 50% 0 MAX4534 80% A1 COM GND SWITCH OUTPUT VOUT VOUT V- 35pF tOPEN RL 50Ω V- Figure 4. MAX4534 Break-Before-Make Interval V+ RS V+ NO_ VEN VS MAX4534 A0 CHANNEL SELECT LOGIC INPUT VEN EN COM +3V ON OFF ON 0 VOUT A1 GND CL 1nF V- ∆VOUT VOUT ∆VOUT IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER ERROR VCTE WHEN THE CHANNEL TURNS OFF.
PAGE 14
MAX4534/MAX4535 Fault-Protected, High-Voltage, Single 4-to-1/Dual 2-to-1 Multiplexers Test Circuits/Timing Diagrams (continued) V+ VNO_ V+ NO4 MAX4534 A0 GND EN VCOM_ NO1 A1 CHANNEL SELECT +25V V- +15V 1MHz CAPACITANCE ANALYZER -15V COM -25V V- Figure 9. Transient Behavior of Fault Condition Figure 8.