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Data Sheet

FULL DATA SHEET (PDF, 292kB) Download   E-Mail

Description

The MAX6968 serial-interfaced LED driver provides eight open-drain, constant-current sinking LED driver outputs rated at 5.5V. The MAX6968 operates from a 3V to 5.5V supply. The MAX6968 supply and the LEDs' supply or supplies may power up in any order. The constant-current outputs are programmed together to up to 55mA using a single external resistor. The MAX6968 operates with a 25Mb, industry-standard, 4-wire serial interface. The MAX6968 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 MAX6968s. 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 active-low OE gates all eight outputs on and off, and is fast enough to be used as a PWM input for LED intensity control. For applications requiring LED fault detection, refer to the MAX6977 data sheet that automatically detects open-circuit LEDs. 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 interface becomes inactive for more than 1s. The MAX6968 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.

Key Features		Applications/Uses
25Mb Industry-Standard 4-Wire Serial Interface at 5V 3V to 5.5V Logic Supply 8 Constant-Current LED Outputs Rated at 5.5V Up to 55mA Continuous Current per Output Output Current Programmed by Single Resistor 3% Current Matching Between Outputs 6% Current Matching Between ICs -40°C to +125°C Temperature Range Underwriters Laboratories (UL®) Recognized		Architectural Lighting Gaming Features Marquee Displays Point-of-Order Signs Traffic Signs Variable Message Signs

Diagram

Typical Application Circuit

Reliability Reports

Show FIT data for: MAX6968 Request Reliability Report for: MAX6968 Underwriters Laboratories (UL®) Recognized

Software/Models

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Ordering Information

Notes: Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-10 of 10

MAX6968	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX6968APE			Active	PDIP(N);16 pin;158 mm² Outline Drawing: 21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: P16-1*	-40°C to +125°C	RoHS/Lead-Free: No Materials Analysis
MAX6968APE+			Active	PDIP(N);16 pin;158 mm² Outline Drawing: 21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: P16+1*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX6968AAE+			Active	SSOP;16 pin;50 mm² Outline Drawing: 21-0056 (PDF) Land Pattern: 90-0106 (PDF) Use pkgcode/variation: A16+2*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX6968AAE+T			Active	Land Pattern: Not Available	-40°C to +125°C	See data sheet
MAX6968AAE			Active	SSOP;16 pin;50 mm² Outline Drawing: 21-0056 (PDF) Land Pattern: 90-0106 (PDF) Use pkgcode/variation: A16-2*	-40°C to +125°C	RoHS/Lead-Free: No Materials Analysis
MAX6968AAE-T			Active	Land Pattern: Not Available	-40°C to +125°C	See data sheet
MAX6968AUE			Active	TSSOP-EP;16 pin;33 mm² Outline Drawing: 21-0108 (PDF) Land Pattern: 90-0120 (PDF) Use pkgcode/variation: U16E-3*	-40°C to +125°C	RoHS/Lead-Free: No Materials Analysis
MAX6968AUE-T			Active	Land Pattern: Not Available	-40°C to +125°C	See data sheet
MAX6968AUE+			Active	TSSOP-EP;16 pin;33 mm² Outline Drawing: 21-0108 (PDF) Land Pattern: 90-0120 (PDF) Use pkgcode/variation: U16E+3*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX6968AUE+T			Active	Land Pattern: Not Available	-40°C to +125°C	See data sheet

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