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rev. 1.00 1 august 04, 2011 rev. 1.00 pb august 04, 2011 HT16D595 8-bit constant current led driver feature logic supply voltage: 3.3v~5.5v 8-channel constant current output channel output current is fxed at 48ma build-in current setting resistor high output current accuracy: variation between chips is less than 6% up to 25mhz serial interface clock frequency maximum output terminal voltage 17v schmitt trigger input structure 16-pin nsop package applications led display digital clock, thermometer, counter, voltmeter other consumer application general description the HT16D595 is a high accuracy constant current driver which is specifcally designed for led display applications. the device provides 8-channel stable and constant current outputs for driving leds which may have different forward voltage characteristics, vf, due to process variations. communication with the outside world is catered for by including a fully integrated serial interface function, which provides designers with a means of easy communication with external peripheral hardware. in this way, many devices can be cascaded together to drive larger led displays. furthermore, with this serial-to-serial or serial-to-parallel structure, the device is very suitable as a replacement for the 74hc595, in applications and related products which include an 8-bit serial input and serial or parallel output. block diagram sdo le sdi clk oe 0 out out1 out7 8 bit output driver 8 bit output latch 8 bit shift register current setting resistor 8 8 www.datasheet.co.kr datasheet pdf - http://www..net/
rev. 1.00 2 august 04, 2011 HT16D595 pin assignment 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 out1 out2 out3 out4 out5 out6 out7 gnd vdd out0 sdi oe le clk nc sdo HT16D595 16 nsop-a pin description pin name i/o description vdd power supply gnd ground sdi i serial data input clk i clock input. each data bit is shifted in to the shift register on the rising edge of the input clock signal. le i data latch control. data will be latched into the internal register on high level on the le pin. oe o output enable control: 1: all outputs disabled 0: all outputs enabled sdo o serial data output out0 ~ out7 o parallel data output www.datasheet.co.kr datasheet pdf - http://www..net/
rev. 1.00 3 august 04, 2011 HT16D595 generic input / output structure vdd gnd sdi,clk, le gnd vdd gnd constant current oe out0~out7 sdo vdd gnd www.datasheet.co.kr datasheet pdf - http://www..net/
rev. 1.00 4 august 04, 2011 HT16D595 absolute maximum ratings logic supply voltage (vdd) ................. ............................................. ..vgnd-0.3v to vgnd+6.0v logic input voltage ................. ................................................ . vgnd-0.3v to vdd+0.3v output voltage ............... .................................................................................... 20v output current ............... ................................................................................ .60ma gnd terminal current.... ............................................................................ ..450ma storage temperature .......................... ...................................................................... -55 c to 150 c operating temperature........................ ....................................................................... -40 c to 85 c note: these are stress ratings only. stresses exceeding the range specifed under absolute maximum ratings may cause substantial damage to the device. functional operation of this device at other conditions beyond those listed in the specifcation is not implied and prolonged exposure to extreme conditions may affect device reliability. d.c. characteristics ta=25 oc symbol parameter test condition min. typ. max. unit v dd condition v dd logic supply voltage 3.3 5.0 5.5 v v out output voltage 5v out0 ~ out7 17 v v ih high input voltage 5v sdi, clk 0.7v dd v dd v v il low input voltage 5v sdi, clk 0 0.3v dd v v oh high-level output voltage 5v sdo, i out =-4ma 4.6 v v ol low-level output voltage 5v sdo, i out =+4ma 0.4 v i oz output leakage current 5v v ds =17v 0.5 a i out output current 5v v ds =1v 48 ma di out2 current skew(chip) 5v v ds =1v 3 6 % %/dv ds output current vs output voltage regulation 5v v ds within 1.0v and 3.0v 0.5 1 %/v %/dv dd output current vs supply voltage regulation v dd within 4.5v and 5.5v 1 2 %/v r pu pull high resistance 5v oe 250 500 800 k i dd1 supply current 5v out0 ~ out7 =off 3 4.5 ma i dd2 supply current 5v out0 ~ out7 =on 3.5 5.3 ma www.datasheet.co.kr datasheet pdf - http://www..net/
rev. 1.00 5 august 04, 2011 HT16D595 a.c. characteristics ta=25oc symbol parameter test condition min. typ. max. unit v dd condition t plh1 propagation delay time (l to h, clksdo) 5v v ds =0.9v v ih =vdd v il =gnd v l =4v r l =62 c l =10pf c sdo = 50pf 17 25 ns t plh2 propagation delay time (l to h, le outn ) 5v 200 250 ns t plh3 propagation delay time (l to h, oe outn ) 5v 200 250 ns t phl1 propagation delay time (h to l, clksdo) 5v 17 25 ns t phl2 propagation delay time (h to l, le outn ) 5v 150 200 ns t phl3 propagation delay time (h to l, oe outn ) 5v 150 200 ns t w(clk) pulse width 5v 10 ns t w(le) pulse width 5v 10 ns t w(oe) pulse width 5v 300 ns t h(le) hold time for le 5v 7 ns t su(le) setup time for le 5v 10 ns t h(sdi) hold time for sdi 5v 5 ns t su(sdi) setup time for sdi 5v 3 ns f clk clock frequency 5v c ascade operation 25 mhz t r maximum clk rise time 5v (note1) 500 ns t f maximum clk fall time 5v 500 ns t or output rise time of v out 5v 70 200 ns t of output fall time of v out 5v 40 120 ns note 1: if the devices are connected in cascade and if t r or t f is large, then these timings may be critical to achieve the correct timings for data transfer between two cascaded devices. www.datasheet.co.kr datasheet pdf - http://www..net/
rev. 1.00 6 august 04, 2011 HT16D595 test circuit for ac characteristics vdd sdo v dd v l c l c sdo r l outn timing waveform t su(sdi) t h(sdi) t plh1, t phl1 t w(le) t h(le) t plh2, t phl2 t w(clk) clk sdi sdo le 50% 50% 50% 50% 50% 50% 50% 50% outn oe l t su(le) 50% t phl3 t plh3 t of t or t w(oe) 50% 90% 10% 90% 50% 10% outn oe www.datasheet.co.kr datasheet pdf - http://www..net/
rev. 1.00 7 august 04, 2011 HT16D595 serial-to-serial operation the serial-to-serial function is implemented using the sdi and sdo pins. the sdi pin is used to receive serial input data for transfer into the lsb of the internal shift register while the sdo pin is used to transmit the msb of the internal shift register to cascaded devices . each bit of the data is shifted in from the sdi pin into the register on the rising edge of the clk input signal where it will become the lsb of the internal shift register . at the same time , the sdo pin will shift out the msb in the shift register to any connected cascaded devices. serial-to-parallel output operation if the le pin is high, then data will be latched from the shift register into an internal latch for transfer to the out pins. data from the internal latch is transferred to the out pins using the oe pin. if the oe pin is low, then the data in the shift register will be transmitted to the output pins. the out pins can be disabled by setting the oe pin to a high level. the sdo pin will not be affected by the le or oe pin status. the following timing diagram illustrates the serial-to-serial and serial-to-parallel operational waveform. clk sdi le off on off on off on off on off on off on off on off on sd0 0 1 2 3 4 5 6 7 d7 d6 d5 d4 d3 d2 d1 d0 d0 d1 d2 d3 d4 d5 d6 d7 oe out0 out1 out2 out3 out4 out5 out6 out7 www.datasheet.co.kr datasheet pdf - http://www..net/
rev. 1.00 8 august 04, 2011 HT16D595 truth table clk le oe sdi out0 ... out3 ... out7 sdo h l d n d n. d n-3. d n-7 d n-7 l l d n+1 no change d n-6 h l d n+2 d n+2. d n-1. d n-5 d n-5 x l d n+3 d n+2. d n-1. d n-5 d n-5 x h d n+3 off d n-5 constant current output the output constant current is fxed at 48ma for the 8 output channels. the constant current variation between devices is less than 6%. iout vs v ds @ v dd =5v 0 10 20 30 40 50 60 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 v ds (v) iout(ma) www.datasheet.co.kr datasheet pdf - http://www..net/
rev. 1.00 9 august 04, 2011 HT16D595 load supply voltage (v led ) HT16D595 can be operated very well when v ds is set from 0.7v to 2v. it is recommended to use the lowest supply voltage (v led ) to reduce the v ds value in order to lower both the power consumption of HT16D595 and ic temperature. HT16D595 vf v ds 0.7v v led control signal application circuit sdi clk le /oe sdo out0~out7 HT16D595 sdi clk le /oe sdo out0~out7 sdi clk le /oe sdo out0~out7 8 8 8 cn v dd led matrix HT16D595 HT16D595 sdi clk clk oe micro-contoller control signal of scanning www.datasheet.co.kr datasheet pdf - http://www..net/
rev. 1.00 10 august 04, 2011 HT16D595 package information 16-pin nsop (150mil) outline dimensions 16-pin nsop (150mil) outline dimensions ms-012 symbol dimensions in inch min. nom. max. a 0.228 0.244 b 0.150 0.157 c 0.012 0.020 c 0.386 0.402 d 0.069 e 0.050 f 0.004 0.010 g 0.016 0.050 h 0.007 0.010 08 symbol dimensions in mm min. nom. max. a 5.79 6.20 b 3.81 3.99 c 0.30 0.51 c 9.80 10.21 d 1.75 e 1.27 f 0.10 0.25 g 0.41 1.27 h 0.18 0.25 08 package information 1 june 1, 2010 ms-012 symbol dimensions in inch min. nom. max. a 0.228 D 0.244 b 0.150 D 0.157 c 0.012 D 0.020 c' 0.386 D 0.402 d D D 0.069 e D 0.050 D f 0.004 D 0.010 g 0.016 D 0.050 h 0.007 D 0.010 0 D 8 symbol dimensions in mm min. nom. max. a 5.79 D 6.20 b 3.81 D 3.99 c 0.30 D 0.51 c' 9.80 D 10.21 d D D 1.75 e D 1.27 D f 0.10 D 0.25 g 0.41 D 1.27 h 0.18 D 0.25 0 D 8 www.datasheet.co.kr datasheet pdf - http://www..net/
rev. 1.00 11 august 04, 2011 HT16D595 holtek semiconductor inc. (headquarters) no.3, creation rd. ii, science park, hsinchu, taiwan tel: 886-3-563-1999 fax: 886-3-563-1189 http://www.holtek.com.tw holtek semiconductor inc. (taipei sales offce) 4f-2, no. 3-2, yuanqu st., nankang software park, taipei 115, taiwan tel: 886-2-2655-7070 fax: 886-2-2655-7373 fax: 886-2-2655-7383 (international sales hotline) holtek semiconductor inc. (shenzhen sales offce) 5f, unit a, productivity building, no.5 gaoxin m 2nd road, nanshan district, shenzhen, china 518057 tel: 86-755-8616-9908, 86-755-8616-9308 fax: 86-755-8616-9722 holtek semiconductor (usa), inc. (north america sales offce) 46729 fremont blvd., fremont, ca 94538, usa tel: 1-510-252-9880 fax: 1-510-252-9885 http://www.holtek.com copyright ? 2011 by holtek semiconductor inc. the information appearing in this data sheet is believed to be accurate at the time of publication. however, holtek assumes no responsibility arising from the use of the specifications described. the applications mentioned herein are used solely for the purpose of illustration and holtek makes no warranty or representation that such applications will be suitable without further modifcation, nor recommends the use of its products for application that may present a risk to human life due to malfunction or otherwise. holtek's products are not authorized for use as critical components in life support devices or systems. holtek reserves the right to alter its products without prior notifcation. for the most up-to-date information, please visit our web site at http://www.holtek.com.tw . www.datasheet.co.kr datasheet pdf - http://www..net/

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