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MAX4820_09

Description
0.07 A BUF OR INV BASED PRPHL DRVR, QCC20
Categorysemiconductor    Analog mixed-signal IC   
File Size342KB,13 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
Download Datasheet Parametric View All

MAX4820_09 Overview

0.07 A BUF OR INV BASED PRPHL DRVR, QCC20

MAX4820_09 Parametric

Parameter NameAttribute value
Number of functions1
Number of terminals20
Minimum operating temperature-40 Cel
Maximum operating temperature85 Cel
Processing package description4 X 4 MM, 0.80 MM PITCH, MO-220, QFN-20
stateActive
Interface TypeBUFFER OR INVERTER BASED PERIPHERAL DRIVER
Built-in protectionTRANSIENT
jesd_30_codeS-XQCC-N20
jesd_609_codee0
moisture_sensitivity_level1
Output current flow directionSINK
Rated output peak current limit0.0700 A
Packaging MaterialsUNSPECIFIED
ckage_codeHVQCCN
packaging shapeSQUARE
Package SizeCHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
eak_reflow_temperature__cel_245
qualification_statusCOMMERCIAL
seated_height_max0.8000 mm
Rated supply voltage3.3 V
Minimum supply voltage2.3 V
Maximum supply voltage5.5 V
surface mountYES
CraftsmanshipBICMOS
Temperature levelINDUSTRIAL
terminal coatingTIN LEAD
Terminal formNO LEAD
Terminal spacing0.5000 mm
Terminal locationQUAD
ime_peak_reflow_temperature_max__s_NOT SPECIFIED
urn_off_time1 µs
urn_on_time1 µs
length4 mm
width4 mm
19-2751; Rev 0; 1/03
+3.3V/+5V, 8-Channel, Cascadable Relay Drivers
with Serial/Parallel Interface
General Description
The MAX4820/MAX4821 8-channel relay drivers offer
built-in kickback protection and drive +3.3V/+5V non-
latching or dual-coil-latching relays. These devices are
especially useful when driving +3V relays. Each inde-
pendent open-drain output features a 2Ω on-resistance
and is guaranteed to sink 70mA (min) of load current.
Both devices consume less than 50µA (max) quiescent
current and have 1µA output off-leakage current.
The MAX4820 features an SPI™-/QSPI™-/MICROWIRE™-
compatible serial interface. Input data is shifted into an 8-
bit shift register and latched to the outputs when
CS
transitions from low to high. Each data bit in the shift reg-
ister corresponds to a specific output, allowing indepen-
dent control of all outputs.
The MAX4821 features a 4-bit (A0, A1, A2, LVL) paral-
lel-input interface. The first three bits (A0, A1, A2) deter-
mine the output address, and the fourth bit (LVL)
determines whether the selected output is switched on
or off. Data is latched to the outputs when
CS
transi-
tions from low to high.
Both devices feature separate set and reset functions
that allow the user to turn on or turn off all outputs simul-
taneously with a single control line. Built-in hysteresis
(Schmidt trigger) on all digital inputs allows this device
to be used with slow rising and falling signals, such as
those from optocouplers or RC power-up initialization
circuits. The MAX4820/MAX4821 are available in 20-pin
TSSOP and space-saving 20-pin thin QFN packages.
o
8 Independent Output Channels
o
Built-In Inductive Kickback Protection
o
Drive +3V and +5V Relays
o
Guaranteed 70mA (min) Coil Drive Current
o
SET
Function to Turn On All Outputs
Simultaneously
o
RESET
Function to Turn Off All Outputs
Simultaneously
o
SPI-/QSPI-/MICROWIRE-Compatible Serial
Interface (MAX4820)
o
Serial Digital Output for Daisy Chaining
(MAX4820)
o
Parallel Interface (MAX4821)
o
Low 50µA (max) Quiescent Supply Current
o
Space-Saving 20-Pin Thin QFN Package
Features
MAX4820/MAX4821
Ordering Information
PART
MAX4820ETP*
MAX4820EUP*
MAX4821ETP*
MAX4821EUP*
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
20 Thin QFN-EP
20 TSSOP
20 Thin QFN-EP
20 TSSOP
Applications
Central Office
ATE
DSL, ADSL Line Cards
*For
maximum heat dissipation, packages have an exposed pad
(EP) on the bottom. Solder exposed pad to GND.
Pin Configurations
PGND
OUT1
18
20
19
17
RESET
CS
1
2
3
4
5
10
6
7
8
9
16
E1/T1 Redundancy
V
CC
SET
Industrial Equipment
OUT2
TOP VIEW
15
14
OUT3
OUT4
COM
OUT5
OUT6
Pin Configurations continued at end of data sheet.
Typical Application Circuits and Functional Diagrams
appear at end of data sheet.
DIN
SCLK
DOUT
MAX4820
13
12
11
N.C.
OUT8
OUT7
GND
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
THIN QFN
1
________________________________________________________________
Maxim Integrated Products
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.
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