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MAX6977AAE-T

Description
LED Display Drivers
CategoryAnalog mixed-signal IC    Drivers and interfaces   
File Size282KB,13 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
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MAX6977AAE-T Overview

LED Display Drivers

MAX6977AAE-T Parametric

Parameter NameAttribute value
Is it lead-free?Contains lead
Is it Rohs certified?incompatible
MakerMaxim
Parts packaging codeSSOP
package instruction5.30 MM, MO-150, SSOP-16
Contacts16
Reach Compliance Codenot_compliant
ECCN codeEAR99
data entry modeSERIAL
Interface integrated circuit typeLED DISPLAY DRIVER
JESD-30 codeR-PDSO-G16
JESD-609 codee0
length6.2 mm
Humidity sensitivity level1
Number of functions1
Number of segments8
Number of terminals16
Maximum operating temperature125 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeSSOP
Encapsulate equivalent codeSSOP16,.3
Package shapeRECTANGULAR
Package formSMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius)245
power supply3.3/5 V
Certification statusNot Qualified
Maximum seat height1.99 mm
Maximum supply voltage5.5 V
Minimum supply voltage3 V
Nominal supply voltage3.3 V
surface mountYES
technologyBICMOS
Temperature levelAUTOMOTIVE
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch0.65 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width5.29 mm
19-3554; Rev 2; 7/05
8-Port, 5.5V Constant-Current LED Driver with
LED Fault Detection
General Description
The MAX6977 serial-interfaced LED driver provides
eight open-drain, constant-current sinking LED driver
outputs rated at 5.5V. The MAX6977 operates from a 3V
to 5.5V supply. The MAX6977 supply and the LEDs’
supply may power up in any order. The constant-cur-
rent outputs are programmed together to up to 55mA
using a single external resistor. The MAX6977 operates
with a 25Mb, industry-standard, 4-wire serial interface.
The MAX6977 includes circuitry that automatically
detects open-circuit LEDs. Fault status is loaded into the
serial interface shift register when LE goes high, and is
automatically shifted out on DOUT when the next data
transmission is shifted in.
The MAX6977 uses the industry-standard shift-register-
plus-latch-type serial interface. The driver accepts data
shifted into an 8-bit shift register using data input DIN
and clock input CLK. Input data appears at the output
DOUT eight clock cycles later to allow cascading of
multiple MAX6977s. The latch-enable input LE loads
the 8 bits of shift register data into an 8-bit output latch
to set which LEDs are on and which are off. The output-
enable input
OE
gates all eight outputs on and off, and
is fast enough to be used as a PWM input for LED
intensity control.
For safety-related applications requiring a watchdog
timer, refer to the MAX6978 data sheet that includes a
fail-safe feature that blanks the display if the serial inter-
face becomes inactive for more than 1s.
The MAX6977 is one of a family of 12 shift-register-plus-
latch-type LED drivers. The family includes 8-port and
16-port types, with 5.5V- or 36V-rated LED outputs, with
and without open-circuit LED detection and watchdog.
All versions operate from a 3V to 5.5V supply, and are
specified over the -40°C to +125°C temperature range.
o
3V to 5.5V Logic Supply
o
8 Constant-Current LED Outputs Rated at 5.5V
o
Up to 55mA Continuous Current per Output
o
Output Current Programmed by Single Resistor
o
3% Current Matching Between Outputs
o
6% Current Matching Between ICs
o
Reports Open-Circuit LED Faults
o
-40°C to +125°C Temperature Range
Features
o
25Mb Industry-Standard 4-Wire Serial Interface at 5V
MAX6977
Ordering Information
PART
MAX6977AUE
MAX6977APE
MAX6977AAE
TEMP RANGE
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
PIN-PACKAGE
16 TSSOP-EP*
16 PDIP
16 SSOP
*EP
= Exposed pad.
Typical Application Circuit and Selector Guide appear at
end of data sheet.
Pin Configuration
TOP VIEW
Applications
Variable Message Signs
Marquee Displays
Point-of-Order Signs
Traffic Signs
Gaming Features
Architectural Lighting
GND 1
DIN 2
CLK 3
LE 4
OUT0 5
OUT1 6
OUT2 7
OUT3 8
16 V+
15 SET
14 DOUT
MAX6977AUE
MAX6977APE
MAX6977AAE
13 OE
12 OUT7
11 OUT6
10 OUT5
9
OUT4
TSSOP/PDIP/SSOP
________________________________________________________________
Maxim Integrated Products
1
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.

MAX6977AAE-T Related Products

MAX6977AAE-T MAX6977AAE MAX6977APE MAX6977AUE-T
Description LED Display Drivers LED Display Drivers LED Lighting Drivers 8-Port 5.5V Constant Current LED Driver LED Lighting Drivers 8-Port 5.5V Constant Current LED Driver
Is it lead-free? Contains lead Contains lead Contains lead Contains lead
Is it Rohs certified? incompatible incompatible incompatible incompatible
Maker Maxim Maxim Maxim Maxim
Parts packaging code SSOP SSOP DIP TSSOP
package instruction 5.30 MM, MO-150, SSOP-16 5.30 MM, MO-150, SSOP-16 DIP, DIP16,.3 HTSSOP, TSSOP16,.25
Contacts 16 16 16 16
Reach Compliance Code not_compliant not_compliant not_compliant not_compliant
ECCN code EAR99 EAR99 EAR99 EAR99
data entry mode SERIAL SERIAL SERIAL SERIAL
Interface integrated circuit type LED DISPLAY DRIVER LED DISPLAY DRIVER LED DISPLAY DRIVER LED DISPLAY DRIVER
JESD-30 code R-PDSO-G16 R-PDSO-G16 R-PDIP-T16 R-PDSO-G16
JESD-609 code e0 e0 e0 e0
length 6.2 mm 6.2 mm 19.175 mm 5 mm
Humidity sensitivity level 1 1 1 1
Number of functions 1 1 1 1
Number of segments 8 8 8 8
Number of terminals 16 16 16 16
Maximum operating temperature 125 °C 125 °C 125 °C 125 °C
Minimum operating temperature -40 °C -40 °C -40 °C -40 °C
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code SSOP SSOP DIP HTSSOP
Encapsulate equivalent code SSOP16,.3 SSOP16,.3 DIP16,.3 TSSOP16,.25
Package shape RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH IN-LINE SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius) 245 245 245 245
power supply 3.3/5 V 3.3/5 V 3.3/5 V 3.3/5 V
Certification status Not Qualified Not Qualified Not Qualified Not Qualified
Maximum seat height 1.99 mm 1.99 mm 4.572 mm 1.1 mm
Maximum supply voltage 5.5 V 5.5 V 5.5 V 5.5 V
Minimum supply voltage 3 V 3 V 3 V 3 V
Nominal supply voltage 3.3 V 3.3 V 3.3 V 3.3 V
surface mount YES YES NO YES
technology BICMOS BICMOS BICMOS BICMOS
Temperature level AUTOMOTIVE AUTOMOTIVE AUTOMOTIVE AUTOMOTIVE
Terminal surface Tin/Lead (Sn/Pb) TIN LEAD Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb)
Terminal form GULL WING GULL WING THROUGH-HOLE GULL WING
Terminal pitch 0.65 mm 0.65 mm 2.54 mm 0.65 mm
Terminal location DUAL DUAL DUAL DUAL
Maximum time at peak reflow temperature NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED
width 5.29 mm 5.29 mm 7.62 mm 4.4 mm
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