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PDF MAX333A Data sheet ( Hoja de datos )
| Número de pieza | MAX333A | |
| Descripción | CMOS Analog Switch | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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19-0189; Rev 1; 6/99
Precision, Quad, SPDT, CMOS Analog Switch
_______________General Description
The MAX333A is a precision, quad, single-pole double-
throw (SPDT) analog switch. The four independent
switches operate with bipolar supplies ranging from
±4.5V to ±20V, or with a single-ended supply between
+10V and +30V. The MAX333A offers low on resistance
(less than 35Ω), guaranteed to match within 2Ω between
channels and to remain flat over the analog signal range
(∆3Ω max). It also offers break-before-make switching
(10ns typical), with turn-off times less than 145ns and
turn-on times less than 175ns. The MAX333A is ideal for
portable operation since quiescent current runs less
than 50µA with all inputs high or low.
This monolithic, quad switch is fabricated with Maxim’s
new improved silicon-gate process. Design improvements
guarantee extremely low charge injection (10pC), low
power consumption (3.75mW), and electrostatic discharge
(ESD) greater than 2000V.
Logic inputs are TTL and CMOS compatible and guaranteed
over a +0.8V to +2.4V range—regardless of supply voltage.
Logic inputs and switched analog signals can range any-
where between the supply voltages without damage.
________________________Applications
Test Equipment
Communications Systems
PBX, PABX
Heads-Up Displays
Portable Instruments
__________________Pin Configuration
TOP VIEW
IN1 1
NO1 2
COM1 3
NC1 4
V- 5
GND 6
NC2 7
COM2 8
NO2 9
IN2 10
MAX333A
20 IN4
19 NO4
18 COM4
17 NC4
16 V+
15 N.C.
14 NC3
13 COM3
12 NO3
11 IN3
DIP/SO/TSSOP
SWITCHES ARE SHOWN WITH LOGIC "0" INPUT
N.C. = NOT INTERNALLY CONNECTED
____________________________Features
o Upgraded Replacement for a DG211/DG212 Pair
or Two DG403s
o Low On Resistance < 17Ω Typical (35Ω Max)
o Guaranteed Matched On Resistance Between
Channels < 2Ω
o Guaranteed Flat On Resistance over Analog
Signal Range ∆3Ω Max
o Guaranteed Charge Injection < 10pC
o Guaranteed Off-Channel Leakage < 6nA at +85°C
o ESD Guaranteed > 2000V per Method 3015.7
o Single-Supply Operation (+10V to +30V)
Bipolar-Supply Operation (±4.5V to ±20V)
o TTL-/CMOS-Logic Compatibility
o Rail-to-Rail Analog Signal Handling Capability
______________Ordering Information
PART
MAX333ACPP
MAX333ACWP
MAX333ACUP
MAX333AC/D
MAX333AEPP
MAX333AEWP
MAX333AEUP
MAX333AMJP
TEMP. RANGE
0°C to +70°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
-55°C to +125°C
PIN-PACKAGE
20 Plastic DIP
20 Wide SO
20 TSSOP
Dice*
20 Plastic DIP
20 Wide SO
20 TSSOP
20 CERDIP
* Contact factory for dice specifications.
__________Typical Operating Circuit
INPUTS
V1
V2
OUTPUTS
V1 - V2
OSC
IN
V3 V3 - V4
V4
FLYING CAPACITOR
LEVEL TRANSLATOR
(2-CHANNEL)
________________________________________________________________ Maxim Integrated Products 1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
1 page  
Precision, Quad, SPDT, CMOS Analog Switch
_____________________Pin Description
PIN
1, 10, 11, 20
2, 9, 12, 19
3, 8, 13, 18
4, 7, 14, 17
5
6
15
16
NAME
IN1-IN4
NO1-NO4
COM1-COM4
NC1-NC4
V-
GND
N.C.
V+
FUNCTION
Logic-Level Inputs
Normally Open Switches
Common Switch Poles
Normally Closed Switches
Negative Power Supply
Ground
Not Internally Connected
Positive Power Supply
Overvoltage Protection
Proper power-supply sequencing is recommended for
all CMOS devices. It is important not to exceed the
absolute maximum ratings because stresses beyond
the listed ratings may cause permanent damage to the
devices. Always sequence V+ on first, followed by VL,
V-, and logic inputs. If power-supply sequencing is not
possible, add two small signal diodes in series with the
supply pins (Figure 1). Adding the diodes reduces the
analog signal range to 1V below V+ and 1V below V-,
but low switch resistance and low leakage characteris-
tics are unaffected.
__________Applications Information
Operation with Supply Voltages
Other than ±15Vo
The main limitation of supply voltages other than ±15V is
a reduction in the analog signal range. The MAX333A
operates with ±5V to ±20V bipolar supplies. The
Typical Operating Characteristics and graphs show typ-
ical on resistance for ±15V, ±10V, ±5 supplies.
Switching times increase by a factor of two or more for
±5V operation. The MAX333A can operate from +10V
to +24V unipolar supplies. It can be powered from a
single +10V to +24V supply, as well as from unbalanced
supplies such as +24V and -5V. Connect V- to 0V when
operating with a single supply.
V+
COM_
Vg
NO_
( OR NC_)
V-
Figure 1. Overvoltage Protection Using Blocking Diodes
______________________________________________Test Circuits/Timing Diagrams
3V
VIN
0V
+10V
VCOM 0V
-10V
tOFF
tR < 20ns
tF < 20ns
50%
tOFF
tOPEN
50%
50%
50%
tON
50%
50%
tON tOPEN
+10V
-10V
IN_
NC_
NO_
LOGIC
INPUT
V+ GND
+15V
SWITCH OUTPUT
COM_
300Ω
V-
-15V
(REPEAT TEST FOR IN2, IN3, AND IN4.)
Figure 2. Switching-Time Test Circuit
_______________________________________________________________________________________ 5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet MAX333A.PDF ] | |
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