MAX6968AAE

19-3555; Rev 2; 7/05 8-Port, 5.5V Constant-Current LED Driver Features 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, 4wire serial interface. The MAX6968 uses the industry-standard shift-registerplus-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 outputenable input OE gates all eight outputs on and off, and is fast enough to be used as a PWM input for LED intensity control. ♦ 25Mb Industry-Standard 4-Wire Serial Interface at 5V 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-pluslatch-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. ♦ 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 Ordering Information PART TEMP RANGE PIN-PACKAGE MAX6968AUE -40°C to +125°C 16 TSSOP-EP* MAX6968APE -40°C to +125°C 16 PDIP MAX6968AAE -40°C to +125°C 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 GND 1 16 V+ DIN 2 15 SET CLK 3 LE 4 14 DOUT MAX6968AUE MAX6968APE MAX6968AAE 13 OE Traffic Signs OUT0 5 Gaming Features OUT1 6 11 OUT6 Architectural Lighting OUT2 7 10 OUT5 OUT3 8 9 12 OUT7 OUT4 TSSOP/PDIP/SSOP ________________________________________________________________ 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. 1 MAX6968 General Description MAX6968 8-Port, 5.5V Constant-Current LED Driver ABSOLUTE MAXIMUM RATINGS Voltage (with respect to GND) V+ ............................................................................-0.3V to +6V OUT_ .......................................................................-0.3V to +6V DIN, CLK, LE, OE, SET ................................-0.3V to (V+ + 0.3V) DOUT Current ..................................................................±10mA OUT_ Sink Current .............................................................60mA Total GND Current ...........................................................480mA Continuous Power Dissipation (TA = +70°C) 16-Pin SSOP (derate 7.1mW/°C above +70°C) ............571mW 16-Pin PDIP (derate 10.5mW/°C above +70°C)............842mW 16-Pin TSSOP (derate 21.3mW/°C over TA = +70°C) ..............................................................1702mW Operating Temperature Range .........................-40°C to +125°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (Typical Operating Circuit, V+ = 3V to 5.5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at V+ = 5V, TA = +25°C.) (Note 1) PARAMETER Operating Supply Voltage Output Voltage SYMBOL CONDITIONS V+ MIN TYP 3.0 VOUT MAX UNITS 5.5 V 5.5 V Standby Current (Interface Idle, All Output Ports High Impedance, RSET = 360Ω) I+ All logic inputs at V+ or GND, DOUT unloaded 4.5 5.6 mA Standby Current (Interface Running, All Output Ports High Impedance, RSET = 360Ω) I+ fCLK = 5MHz, OE = V+, DIN and LE = V+ or GND, DOUT unloaded 4.7 6 mA Supply Current (Interface Idle, All Output Ports Active Low, RSET = 360Ω) I+ All logic inputs at V+ or GND, DOUT unloaded 10 25 mA Input High Voltage DIN, CLK, LE, OE VIH Input Low Voltage DIN, CLK, LE, OE VIL Hysteresis Voltage DIN, CLK, LE, OE ∆VI Input Leakage Current DIN, CLK, LE, OE 0.7 V+ 0.3 V+ 0.8 IIH, IIL -1 Output High-Voltage DOUT VOH ISOURCE = 4mA Output Low Voltage VOL ISINK = 4mA Output Current OUT_ IOUT V+ = 3V to 5.5V, VOUT = 0.5V to 2.5V, RSET = 360Ω Output Leakage Current OUT_ ILEAK OE = V+, VOUT = V+ Watchdog Timeout 2 tWD V V +1 V+ - 0.5V 42 V µA V 50 1 _______________________________________________________________________________________ 0.5 V 56 mA 1 µA s 8-Port, 5.5V Constant-Current LED Driver (Typical Operating Circuit, V+ = 4.5V to 5.5V, TA = TMIN to TMAX, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS CLK Clock Period tCP 40 ns CLK Pulse-Width High tCH 19 ns CLK Pulse-Width Low tCL 19 ns DIN Setup Time tDS 4 ns DIN Hold Time tDH 8 ns DOUT Propagation Delay tDO DOUT Rise and Fall Time tDR, tDF LE Pulse-Width High LE Setup Time 12 CDOUT = 10pF, 20% to 80% tLW 32 10 20 tLS ns ns ns 10 ns LE Rising to OUT_ Rising Delay tLRR (Note 2) 100 ns LE Rising to OUT_ Falling Delay tLRF (Note 2) 280 ns CLK Rising to OUT_ Rising Delay tCRR (Note 2) 100 ns CLK Rising to OUT_ Falling Delay tCRF (Note 2) 310 ns OE Rising to OUT_ Rising Delay tOEH 100 ns OE Falling to OUT_ Falling Delay tOEL 300 ns LED Output OUT_ Turn-On Fall Time tf 80% to 20% 200 ns LED Output OUT_ Turn-Off Rise Time tr 20% to 80% 120 ns _______________________________________________________________________________________ 3 MAX6968 5V TIMING CHARACTERISTICS 3.3V TIMING CHARACTERISTICS (Typical Operating Circuit, V+ = 3V to 5.5V, TA = TMIN to TMAX, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS CLK Clock Period tCP 52 ns CLK Pulse-Width High tCH 24 ns CLK Pulse-Width Low tCL 24 ns DIN Setup Time tDS 4 ns DIN Hold Time tDH 8 DOUT Propagation Delay tDO 12 DOUT Rise and Fall Time tDR, tDF ns 48 CDOUT = 10pF, 20% to 80% ns 10 ns LE Pulse-Width High tLW 20 ns LE Setup Time tLS 15 ns LE Rising to OUT_ Rising Delay tLRR 100 ns LE Rising to OUT_ Falling Delay tLRF 310 ns CLK Rising to OUT_ Rising Delay tCRR 100 ns CLK Rising to OUT_ Falling Delay tCRF 330 ns OE Rising to OUT_ Rising Delay tOEH 100 ns OE Falling to OUT_ Falling Delay tOEL 330 ns LED Output OUT_ Turn-On Fall Time tf 80% to 20% 200 ns LED Output OUT_ Turn-Off Rise Time tr 20% to 80% 120 ns Note 1: All parameters tested at TA = +25°C. Specifications over temperature are guaranteed by design. Note 2: See Figure 3. Typical Operating Characteristics (TA = +25°C, unless otherwise noted.) 3.0 TA = +25°C 2.8 TA = +125°C 5.0 4.9 4.8 4.7 4.6 4.5 TA = +25°C 4.4 TA = -40°C 2.7 4.2 3.0 3.5 4.0 4.5 SUPPLY VOLTAGE (V) 5.0 5.5 TA = +85°C TA = +125°C 12 9 6 TA = -40°C TA = +25°C 3 TA = -40°C 4.3 2.6 15 MAX6968 toc03 TA = +85°C SUPPLY CURRENT (mA) 3.1 2.9 5.1 SUPPLY CURRENT vs. SUPPLY VOLTAGE (INTERFACE IDLE, ALL OUTPUTS ON, RSET = 720Ω) MAX6968 toc02 TA = +85°C TA = +125°C 3.2 5.2 SUPPLY CURRENT (mA) 3.3 4 SUPPLY CURRENT vs. SUPPLY VOLTAGE (INTERFACE IDLE, ALL OUTPUTS OFF, RSET = 360Ω) SUPPLY CURRENT vs. SUPPLY VOLTAGE (INTERFACE IDLE, ALL OUTPUTS OFF, RSET = 720Ω) MAX6968 toc01 3.4 SUPPLY CURRENT (mA) MAX6968 8-Port, 5.5V Constant-Current LED Driver 0 3.0 3.5 4.0 4.5 SUPPLY VOLTAGE (V) 5.0 5.5 3.0 3.5 4.0 4.5 SUPPLY VOLTAGE (V) _______________________________________________________________________________________ 5.0 5.5 8-Port, 5.5V Constant-Current LED Driver TA = -40°C 6 TA = +25°C 3 20 TA = +25°C TA = +85°C 15 TA = +125°C 10 5 0 3.5 4.0 4.5 5.0 5.5 MAX6968 toc06 50 TA = -40°C 40 TA = +25°C TA = +85°C 30 TA = +125°C 20 10 0 3.0 0 0 0.5 1.0 1.5 2.0 2.5 3.0 0 0.5 1.0 1.5 2.0 2.5 3.0 SUPPLY VOLTAGE (V) PORT OUTPUT VOLTAGE (V) PORT OUTPUT VOLTAGE (V) PORT OUTPUT CURRENT vs. PORT OUTPUT VOLTAGE (RSET = 720Ω, V+ = 5.0V) PORT OUTPUT CURRENT vs. PORT OUTPUT VOLTAGE (RSET = 360Ω, V+ = 5.0V) PORT OUTPUT CURRENT vs. SUPPLY VOLTAGE (RSET = 720Ω, VOUT = 2V) 20 TA = +25°C TA = +85°C 15 TA = +125°C 10 5 50 TA = -40°C 40 TA = +25°C TA = +85°C 30 TA = +125°C 20 26.0 PORT OUTPUT CURRENT (mA) TA = -40°C MAX6968 toc08 25 60 PORT OUTPUT CURRENT (mA) MAX6968 toc07 30 0 0.5 1.0 1.5 2.0 2.5 3.0 TA = +85°C TA = +125°C 25.0 24.5 TA = +25°C 24.0 TA = -40°C 23.0 0 0 0.5 PORT OUTPUT VOLTAGE (V) 1.0 1.5 2.0 2.5 3.0 3.0 3.5 PORT OUTPUT CURRENT vs. SUPPLY VOLTAGE (RSET = 360Ω, VOUT = 2V) 51 5.0 5.5 PORT OUTPUT CURRENT vs. RSET RESISTANCE (V+ = 5.0V) TA = +85°C TA = +125°C 50 49 TA = +25°C TA = -40°C 4.5 48 47 50 MAX6968 toc11 52 4.0 SUPPLY VOLTAGE (V) PORT OUTPUT VOLTAGE (V) MAX6968 toc10 0 25.5 23.5 10 PORT OUTPUT CURRENT (mA) PORT OUTPUT CURRENT (mA) TA = -40°C 60 MAX6968 toc09 9 25 PORT OUTPUT CURRENT (mA) SUPPLY CURRENT (mA) 12 30 PORT OUTPUT CURRENT vs. PORT OUTPUT VOLTAGE (RSET = 360Ω, V+ = 3.3V) PORT OUTPUT CURRENT (mA) TA = +85°C MAX6968 toc05 TA = +125°C PORT OUTPUT CURRENT vs. PORT OUTPUT VOLTAGE (RSET = 720Ω, V+ = 3.3V) PORT OUTPUT CURRENT (mA) 15 MAX6968 toc04 SUPPLY CURRENT vs. SUPPLY VOLTAGE (INTERFACE IDLE, ALL OUTPUTS ON, RSET = 360Ω) 40 30 20 10 0 3.0 3.5 4.0 4.5 SUPPLY VOLTAGE (V) 5.0 5.5 0 500 1000 1500 2000 2500 RSET RESISTANCE (Ω) _______________________________________________________________________________________ 5 MAX6968 Typical Operating Characteristics (continued) (TA = +25°C, unless otherwise noted.) 8-Port, 5.5V Constant-Current LED Driver MAX6968 Pin Description PIN NAME 1 GND Ground 2 DIN Serial-Data Input. Data is loaded into the internal 8-bit shift register on CLK’s rising edge. 3 CLK Serial-Clock Input. Data is loaded into the internal 8-bit shift register on CLK’s rising edge. 4 LE 5–12 OUT0–OUT7 13 OE Output-Enable Input. High forces outputs OUT0–OUT7 to high impedance, without altering the contents of the output latches. Low enables outputs OUT0–OUT7 to follow the state of the output latches. 14 DOUT Serial-Data Output. Data is clocked out of the 8-bit internal shift register to DOUT on CLK’s rising edge. 15 SET LED Current Setting. Connect SET to GND through a resistor (RSET) to set the maximum LED current. 16 V+ Positive Supply Voltage. Bypass V+ to GND with a 0.1µF ceramic capacitor. PAD FUNCTION Load-Enable Input. Data is loaded transparently from the internal shift register to the output latch while LE is high. Data is latched into the output latch on LE's falling edge, and retained while LE is low. LED Driver Outputs. OUT0–OUT7 are open-drain, constant-current sinking outputs rated to 5.5V. Exposed pad* Exposed pad on package underside. Connect to GND. *TSSOP package only. CLK MAX6968 DIN D0 SERIAL-TO-PARALLEL SHIFT REGISTER D7 LE D0 LATCHES D7 DOUT POWER-ON RESET V+ OE V+ CONSTANT-CURRENT SINKS D0 D7 CURRENT REFERENCE RSET OUT0 OUT2 OUT1 OUT5 OUT7 OUT6 GND GND Figure 1. MAX6968 Block Diagram 6 _______________________________________________________________________________________ 8-Port, 5.5V Constant-Current LED Driver The MAX6968 LED driver comprises a 4-wire serial interface driving eight constant-current sinking opendrain output ports. The outputs drive LEDs in either static or multiplex applications (Figure 1). The constantcurrent outputs are guaranteed for current accuracy not only with chip-supply voltage variations (5V ±10% and 3V to 5.5V), but also over a realistic range of driver output voltage drop (0.5V to 2.5V). The drivers use current-sensing feedback circuitry (not simple current mirrors) to ensure very small current variations over the full allowed range of output voltage (see the Typical Operating Characteristics). The 4-wire serial interface comprises an 8-bit shift register and an 8-bit transparent latch. The shift register is written through a clock input CLK and a data input DIN and the data propagates to a data output DOUT. The data output allows multiple drivers to be cascaded and operated together. The contents of the 8-bit shift register are loaded into the transparent latch through a latch enable input LE. The latch is transparent to the shift register outputs when high, and latches the current state on the falling edge of LE. Each driver output is an open-drain constant-current sink that should be connected to the cathode of either a single LED or a series string of multiple LEDs. The LED anode can be connected to a supply voltage of up to 5.5V, independent of the MAX6968 supply, V+. The constant-current capability is up to 55mA per output, set for all eight outputs by an external resistor, RSET. Initial Power-Up and Operation An internal reset circuit clears the internal registers of the MAX6968 on power-up. All outputs OUT0–OUT7, therefore, initialize high impedance, and the interface output DOUT initializes low, regardless of the initial logic levels of the CLK, DIN, OE, and LE inputs. 4-Wire Serial Interface The serial interface on the MAX6968 is a 4-wire serial interface using four inputs (DIN, CLK, LE, OE) and a data output (DOUT). This interface is used to write display data to the MAX6968. The serial-interface data word length is 8 bits, D0–D7. See Figure 2. The functions of the five interface pins are as follows. DIN is the serial data input, and must be stable when it is sampled on the rising edge of CLK. Data is shifted in, MSB first. This means that data bit D7 is clocked in first, followed by 7 more data bits finishing with the LSB D0. LE tCL tCH tLS tCP tLW tLF CLK tDH tDS DIN D7 D1 D6 D0 tDO D7 DOUT tOEW OE tOEL tOEH 80% OUT_ . 20% tf tr Figure 2. 4-Wire Serial-Interface Timing Diagram _______________________________________________________________________________________ 7 MAX6968 Detailed Description 8-Port, 5.5V Constant-Current LED Driver MAX6968 CLK is the serial-clock input, which shifts data at DIN into the MAX6968 8-bit shift register on its rising edge. LE LE is the load input of the MAX6968 latch that transfers data from the MAX6968 8-bit shift register to its 8-bit latch when LE is high (transparent latch), and latches the data on the LE’s falling edge of LE (Figure 2). The fourth input provides output-enable control of the output drivers. OE is high to force outputs OUT0–OUT7 high impedance, without altering the contents of the output latches, and low to enable outputs OUT0–OUT7 to follow the state of the output latches. tLRF OUT_ LE tLRR OUT_ OE is independent of the operation of the serial interface. Data can be shifted into the serial-interface shift register and latched, regardless of the state of OE. CLK tCRF OUT_ DOUT is the serial-data output, which shifts data out from the MAX6968’s 8-bit shift register on the rising edge of CLK. Data at DIN is propagated through the shift register and appears at DOUT eight clock cycles later. CLK tCRR OUT_ Figure 3. LE and CLK to OUT_ Timing Table 1. 4-Wire Serial-Interface Truth Table SERIAL CLOCK DATA INPUT INPUT D0 CLK DIN SHIFT-REGISTER CONTENTS LOAD INPUT BLANKING INPUT LATCH CONTENTS OUTPUT CONTENTS D1 D2 … Dn-1 Dn LE D0 D1 D2 … Dn-1 Dn OE D0 D1 … Dn-1 Dn H H R1 R2 … Rn-2 Rn-1 — — — — — — — — — — — — — — L L R1 R2 … Rn-2 Rn-1 — — — — — — — — — — — — — — — X — R0 R1 R2 … Rn-1 Rn — — — — — — — — — — — — — — X X X … X H R0 R1 R2 — Rn-1 Rn — — — — — — — — — P1 P2 P3 L P0 P1 P2 P0 P1 P2 — — — — — X X X … Pn-1 Pn … X X L — … Pn-1 Pn — — — X H … Pn-1 Pn Hi-Z Hi-Z Hi-Z … Hi-Z Hi-Z L = Low-logic level H = High-logic level X = Don’t care P = Present state R = Previous state 8 D2 _______________________________________________________________________________________ 8-Port, 5.5V Constant-Current LED Driver Selecting External Component RSET to Set LED Output Current The MAX6968 uses an external resistor RSET to set the LED current for outputs OUT0–OUT7. The minimum allowed value of RSET is 307.6Ω, which sets the output currents to 55mA. The maximum allowed value of RSET is 1.5kΩ. The reference value, 360Ω, sets the output currents to 50mA. To set a different output current, use the formula: RSET = 18,000 / IOUT where IOUT is the desired output current in mA. Computing Power Dissipation The upper limit for power dissipation (P D ) for the MAX6968 is determined by the following equation: PD = (V+ x I+) + (VOUT x DUTY x IOUT x N) where: V+ = supply voltage I+ = operating supply current when sinking IOUT LED drive current into N outputs DUTY = PWM duty cycle applied to OE N = number of MAX6968 outputs driving LEDs at the same time (maximum is 8) VOUT = MAX6968 port output voltage when driving load LED(s) IOUT = LED drive current programmed by RSET Overtemperature Cutoff The MAX6968 contains an internal temperature sensor that turns off all outputs when the die temperature exceeds approximately +165°C. The outputs are enabled again when the die temperature drops below approximately +140°C. Register contents are not affected, so when a driver is overdissipating, the external symptom will be the load LEDs cycling between on and off as the driver repeatedly overheats and cools, alternately turning the LEDs off and then back on again. Power-Supply Considerations The MAX6968 operates with a chip supply V+, and one or more LED supplies. Bypass each supply to GND with a 0.1µF capacitor as close to the MAX6968 as possible. This is normally adequate for static LED driving. For multiplex or PWM applications, it is necessary to add an additional bulk electrolytic capacitor of 4.7µF or more to each supply for every 4 to 16 MAX6968s. The necessary capacitance depends on the LED load current, PWM switching frequency, and serial-interface speed. Inadequate V+ decoupling can cause timing problems, and very noisy LED supplies can affect LED current regulation. For the TSSOP version, connect the underside exposed pad to GND. Chip Information TRANSISTOR COUNT: 2382 PROCESS: BiCMOS PD = power dissipation, in mW if currents are in mA Dissipation example: IOUT = 47mA, N = 8, DUTY = 1, VOUT = 2V, V+ = 5.25V PD = (5.25V x 25mA) + (2V x 1 x 47mA x 8) = 0.883W Thus, for a 16-pin TSSOP package (TJA = 1 / 0.0213 = +46.95°C/W from the Absolute Maximum Ratings), the maximum allowed ambient temperature TA is given by: TJ(MAX) = TA + (PD x TJA) = +150°C = TA + (0.883 x 46.95°C/W) so TA = +108.5°C. _______________________________________________________________________________________ 9 MAX6968 Applications Information 8-Port, 5.5V Constant-Current LED Driver MAX6968 Selector Guide NO. OF OUTPUTS PART MAX OUTPUT VOLTAGE (V) MAX OUTPUT CURRENT MAX6968 8 MAX6977 5.5 LED FAULT DETECTION WATCHDOG — — Yes — MAX6978 Yes Yes MAX6970 — — 8 MAX6981 36 MAX6980 55mA MAX6969 16 MAX6984 5.5 Yes — Yes Yes — — Yes — MAX6979 Yes Yes MAX6971 — — 16 MAX6982 36 MAX6983 Yes — Yes Yes Typical Application Circuit +5V +5V µC V+ SCLK CLK MOSI DIN MISO DOUT LOAD LATCH ENABLE MAX6968 OUT0 OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7 OE 360Ω SET GND 0V 10 0V ______________________________________________________________________________________ 8-Port, 5.5V Constant-Current LED Driver TSSOP 4.4mm BODY.EPS XX XX PACKAGE OUTLINE, TSSOP, 4.40 MM BODY, EXPOSED PAD 21-0108 E 1 1 ______________________________________________________________________________________ 11 MAX6968 Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) PDIPN.EPS MAX6968 8-Port, 5.5V Constant-Current LED Driver 12 ______________________________________________________________________________________ 8-Port, 5.5V Constant-Current LED Driver SSOP.EPS 2 1 INCHES E H MILLIMETERS DIM MIN MAX MIN MAX A 0.068 0.078 1.73 1.99 A1 0.002 0.008 0.05 0.21 B 0.010 0.015 0.25 0.38 C 0.20 0.09 0.004 0.008 SEE VARIATIONS D E e 0.205 0.212 0.0256 BSC 5.20 MILLIMETERS INCHES D D D D D 5.38 MIN MAX MIN MAX 0.239 0.239 0.278 0.249 0.249 0.289 6.07 6.07 7.07 6.33 6.33 7.33 0.317 0.397 0.328 0.407 8.07 10.07 8.33 10.33 N 14L 16L 20L 24L 28L 0.65 BSC H 0.301 0.311 7.65 7.90 L 0.025 0 0.037 8 0.63 0 0.95 8 N A C B e L A1 D NOTES: 1. D&E DO NOT INCLUDE MOLD FLASH. 2. MOLD FLASH OR PROTRUSIONS NOT TO EXCEED .15 MM (.006"). 3. CONTROLLING DIMENSION: MILLIMETERS. 4. MEETS JEDEC MO150. 5. LEADS TO BE COPLANAR WITHIN 0.10 MM. PROPRIETARY INFORMATION TITLE: PACKAGE OUTLINE, SSOP, 5.3 MM APPROVAL DOCUMENT CONTROL NO. 21-0056 REV. C 1 1 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 13 © 2005 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products, Inc. MAX6968 Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.)