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PDF MAX4534EPD Data sheet ( Hoja de datos )
| Número de pieza | MAX4534EPD | |
| Descripción | Fault-Protected / High-Voltage / Single 4-to-1/Dual 2-to-1 Multiplexers | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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19-1609; Rev 0; 1/00
Fault-Protected, High-Voltage,
Single 4-to-1/Dual 2-to-1 Multiplexers
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 over-
voltage protection with supplies off and ±25V protection
with supplies on. On-resistance is 400Ω max and is
matched between channels to 10Ω max. All digital 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
o ±40V Fault Protection with Power Off
±25V Fault Protection with ±15V Supplies
o No Power-Supply Sequencing Required
o All Channels Off with Power Off
o Rail-to-Rail Signal Handling
o Output Clamped to Appropriate Supply Voltage
During Fault Condition
o 1.0kΩ typ Output Clamp Resistance During
Overvoltage
o 400Ω max On-Resistance
o 20ns typ Fault Response Time
o ±4.5V to ±20V Dual Supplies
+9V to +36V Single Supply
o TTL/CMOS-Compatible Logic Inputs
Pin Configurations
Ordering Information
TOP VIEW
MAX4534
A0 1
EN 2
V- 3
NO1 4
NO2 5
N.C. 6
COM 7
LOGIC
14 A1
13 GND
12 V+
11 NO3
10 NO4
9 N.C.
8 N.C.
TSSOP/SO/DIP
MAX4535
PART
MAX4534CUD
MAX4534CSD
MAX4534CPD
MAX4534EUD
MAX4534ESD
MAX4534EPD
MAX4535CUD
MAX4535CSD
MAX4535CPD
MAX4535EUD
MAX4535ESD
MAX4535EPD
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
14 TSSOP
14 Narrow SO
14 Plastic DIP
14 TSSOP
14 Narrow SO
14 Plastic DIP
14 TSSOP
14 Narrow SO
14 Plastic SO
14 TSSOP
14 Narrow SO
14 Plastic DIP
A0 1
14 N.C.
EN 2
V- 3
LOGIC
13 GND
12 V+
NO1A 4
11 NO1B
NO2A 5
10 NO2B
N.C. 6
COMA 7
9 N.C.
8 COMB
TSSOP/SO/DIP
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
________________________________________________________________ Maxim Integrated Products 1
For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
1 page  
Fault-Protected, High-Voltage,
Single 4-to-1/Dual 2-to-1 Multiplexers
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.) (Note 3)
PARAMETER
FAULT PROTECTION
Fault-Protected Analog Signal
Range (Note 6)
SYMBOL
CONDITIONS
VNO_
Applies with all power on
Applies with all power off
COM_ Output Leakage Current,
Supply On
ICOM_
VNO_ = ±25V,
VCOM = 0
NO_ Input Leakage Current,
Supply On
INO_ VNO_ = ±25V, VCOM_ = 0,
NO_ Input Leakage Current,
Supply Off
INO_ VNO_= ±40V, V+ = 0
TA
+25°C
+25°C
C, E
+25°C
C, E
+25°C
C, E
MIN TYP MAX UNITS
-25 25
V
-40 40
-20 20 nA
-1 1 µA
-20 20 nA
-5 5 µA
-20 0.1 20 nA
-5 5 µA
COM_ ON Output Current,
Supply On
ICOM_ VNO_ = 25V
+25°C
2
3
5 nA
COM_ ON Output Resistance,
Supply On
RCOM_
Fault Trip Threshold
LOGIC INPUT
Input Logic Voltage High
VA_H,
VENH
Input Logic Voltage Low
VA_L,
VENL
Input Logic Current
IA_, IEN
SWITCH DYNAMIC CHARACTERISTICS
Enable Turn-On Time
tON
Enable Turn-Off Time
tOFF
Break-Before-Make Time Delay tBBM
VNO_ = 25V
RL = 1kΩ
VA_= VEN = 0.8V or 2.4V
VCOM_ = 10V, RL = 2kΩ,
Figure 3
VCOM_ = 10V, RL = 2kΩ,
Figure 3
VCOM_ = 10V, RL = 2kΩ,
Figure 4
+25°C
V- - 400
2.4 6
V+ + 400
kΩ
mV
2.4 V
0.8 V
-1 1 µA
+25°C
C, E
+25°C
C, E
220 500
700
100 250
350
ns
ns
+25°C 50 100
ns
Charge Injection (Note 7)
Q
CL = 1nF, VNO_ = 0, RS = 0,
Figure 5
+25°C
2 10 pC
Off-Isolation (Note 8)
VISO
RL = 50Ω, VNO_ = 1VRMS,
f = 1MHz, Figure 6
-62 dB
Channel-to-Channel Crosstalk
(Note 9)
VCT
RL = 50Ω, VNO_ = 1VRMS,
f = 1MHz, Figure 7
-65 dB
_______________________________________________________________________________________ 5
5 Page 
Fault-Protected, High-Voltage,
Single 4-to-1/Dual 2-to-1 Multiplexers
Transient Fault Condition
When a fast rising or falling transient on NO_ exceeds
V+ or V-, the output (COM_) follows the input (NO_) to
the supply rail with only a few nanoseconds delay. This
delay is due to the switch on-resistance and circuit
capacitance to ground. When the input transient
returns to within the supply rails, however, there is a
longer output recovery time. For positive faults, the
recovery time is typically 2.5µs. For negative faults, the
recovery time is typically 1.3µs. These values depend
on the COM_ output resistance and capacitance. The
delays do not depend on the fault amplitude. Higher
COM_ output resistance and capacitance increase the
recovery times.
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 con-
ditions.
The GND, COM_, EN, and A_ pins do not have fault
protection. Reverse ESD protection diodes are internal-
ly connected between GND, COM_, A_, EN, and both
V+ and V-. If a signal on GND, COM_, EN, or A_
exceeds V+ or V- by more than 300mV, one of these
diodes will conduct. During normal operation, these
reverse-biased ESD diodes leak a few nanoamps of
current to V+ and V-.
Fault Protection Voltage and Power-Off
The maximum fault voltage on the NO_ pins is ±40V
from ground when the power is off. With ±15V supply
voltages, the highest voltage on NO_ can be V- + 40V,
and the lowest voltage on NO_ can be V+ - 40V.
Caution: Exceeding these limits can damage the IC.
Logic-Level Thresholds
The logic-level thresholds are CMOS and TTL compati-
ble with V+ = 4.5V to 16.5V.
Applications Information
Ground
There is no connection between the analog signal
paths and GND. The analog signal paths consist of an
N-channel and a P-channel MOSFET with their sources
and drains paralleled, and their gates driven out of
phase to V+ and V- by the logic-level translators.
V+ and GND power the internal logic and logic-level
translators and set the input logic thresholds. The logic-
level translators convert the logic levels to switched V+
and V- signals to drive the gates of the channel
MOSFETs. This drive signal is the only connection
between the power supplies and the analog signals.
GND, A_, EN, and COM_ have ESD protection diodes
to V+ and V-.
Supply Current Reduction
When the logic signals are driven rail-to-rail from 0 to
+15V or -15V to +15V, the current consumption will be
reduced from 300µA (typ) to 180µA.
Power Supplies
The MAX4534/MAX4535 operate with bipolar supplies
between ±4.5V and ±20V. The V+ and V- supplies
need not be symmetrical, but their sum cannot exceed
the 44V absolute maximum rating.
The MAX4534/MAX4535 operate from single supplies
between +9V and +36V when V- is connected to GND.
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet MAX4534EPD.PDF ] | |
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