st2221a Silicon Touch Technology Inc., st2221a Datasheet
st2221a
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st2221a Summary of contents
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... Version : A.036 Issue Date : 2006/2/9 File Name : SP-ST2221A-A.036 Total Pages : 17 新竹市科學園區展業一路 9 號 7 樓之 1 SILICON TOUCH TECHNOLOGY INC. 9-7F-1, Prosperity Road I, Science Based Industrial Park, Hsin-Chu, Taiwan 300, R.O.C. Tel：886-3-5645656 ...
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... CONSTANT CURRENT LED DRIVERS General Description The ST2221A is specifically designed for LED and LED DISPLAY constant current drivers. The value of constant current can be varied using an external resistor (I devices include an 8-bit shift registers, latches, and constant current drivers on a single Silicon CMOS chip ...
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... GND 1 16 SERIAL- CLOCK LATCH 13 OUT0 5 12 OUT1 6 11 OUT2 7 10 OUT3 9 8 OUT1 OUT0 Version:A.036 V DD R-EXT SERIAL-OUT ENABLE OUT7 OUT6 OUT5 OUT4 OUT7 SERIAL-OUT ST2221A Page: 2 ...
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... Input terminal of a clock for shift register Input terminal for data strobe Output terminals Input terminal for output enable (active low) Output terminal of a data shift register Input terminal of an external resistor 5V Supply voltage terminal Version:A.036 ST2221A ...
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... SILICON TOUCH TECHNOLOGY INC Equivalent Circuit of Inputs and Outputs 1. ENABLE terminal ENABLE GND 3. CLOCK, SERIAL-IN terminal V DD CLOCK, SERIAL-IN GND 8-BIT CONSTANT CURRENT LED DRIVERS . 2. LATCH terminal up IN( ) LATCH 4. SERIAL-OUT terminal 8 Version:A.036 down IN( ) GND LATCH DATA GND ST2221A SERIAL-OUT Page: 4 ...
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... TYP. MAX. 5.0 5.5 ⎯ 9 ⎯ 85 ⎯ ⎯ 1.0 ⎯ -1.0 ⎯ VDD+0.3 ⎯ 0.3VDD ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ 25 ⎯ 0.41 ⎯ 0.32 ⎯ 0.30 ST2221A °C UNIT V V ℃ MHz W Page: 5 ...
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... TYP. MAX. ⎯ 115 230 ⎯ 115 230 ⎯ 115 230 1 ⎯ ⎯ 120 160 ⎯ 120 160 ⎯ 120 160 ⎯ 140 280 55 110 220 ST2221A UNIT V 1.0 uA 0.4 V ⎯ 5 KΩ KΩ 0.6 7.8 mA 7.8 UNIT Page: 6 ...
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... AC characteristic SW- MATRIX 8-BIT CONSTANT CURRENT LED DRIVERS . OUT0 DD ENABLE CLOCK LATCH OUT7 SERIAL-IN SERIAL-OUT R-EXT GND I ref V DD ENABLE CLOCK LATCH SERIAL-IN SERIAL-OUT R-EXT GND Version:A.036 ST2221A OUT0 OUT7 Page: 7 ...
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... CONSTANT CURRENT LED DRIVERS . wCLK t 90% 90% wCLK 50% 50% 10% 10 setup hold 50% 50 90% 50% 10% t pLH 50% t pLH 50% 50% t setup(L) 50% t pLH 50% Version:A.036 50 90% 50% 10% t pHL 50% t pHL “L” level = DATA HOLD tw (LAT) 50% 50% t pHL 50% ST2221A Page: 8 ...
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... Duty Cycle (%) Iout - Duty Cycle (SOP) 100 80 Vo=0.45(V) Vo=0.70(V) 60 Vo=0.95(V) 40 Vdd=5v 20 Tj=140°C(Max) 8bit Active Ta=25° Duty Cycle (%) Iout - Duty Cycle (SOP) 100 Vdd=5V 20 Tj=140°C(Max) 8bit Active Ta=85° Duty Cycle (%) ST2221A Vo=0.45(V) Vo=0.70(v) 100 80 100 Vo=0.45(V) Vo=0.70(V) Vo=0.95(V) 80 100 Page: 9 ...
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... Vo=0.45( Vo=0.70( Vo=0.95( 100 100 150 Version:A.036 Iout - Duty Cycle (DIP) Vo=0.45(V) Vo=0.70(V) Vo=0.95(V) Vdd=5V Tj=140°C(Max) 8bit Active Ta=60° Duty Cycle (%) Rext - Iout Iout = { 1.23 (V) / Rext (ohm 14.45 Vo=0.70(V) 100 1000 Rext (Ohm) ST2221A 100 10000 Page: 10 ...
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... Vo=0.7V 100 150 (°C) temperatur e) (max (ambient t ° Rth ( C / Watt ‧ outputs‧Vo‧Duty ) DD DD Version:A.036 Imax - Ta (SOP) 100 Vo=0. Vo=1. Vdd=5V 10 Tj=140°C(Max) 8bit Active 100 Ambient Temperature Ta (°C) ° emperature ) )( ST2221A 150 Page: 11 ...
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... - Version:A.036 ( IC supply voltage additional R can LED — ST2221A Page: 12 ...
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... SILICON TOUCH TECHNOLOGY INC Package Outline PDIP16 (ST2221A- 2.54 0.635±0.254 Weight : 1.11g(Typ.) 8-BIT CONSTANT CURRENT LED DRIVERS . 9 8 19.69MAX 19.18±0.51 0.4572 1.524 Version:A.036 ST2221A Unit: mm Page: 13 ...
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... SILICON TOUCH TECHNOLOGY INC Package Outline SOP16 (ST2221A- 0.56 1.27 10 8-BIT CONSTANT CURRENT LED DRIVERS . 9 8 0.51 Version:A.036 ST2221A Unit: mm 1.27 Page: 14 ...
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... SILICON TOUCH TECHNOLOGY INC Package Outline SSOP16 (ST2221A- 0.229 0.635 4.9 8-BIT CONSTANT CURRENT LED DRIVERS . 8 0.3Max Version:A.036 ST2221A Unit: mm 0.635 Page: 15 ...
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... Technology, Inc. and its distributors and all their officers and employees shall defend jointly and severally against any and all claims and litigation and all damages, cost and expenses associated with such intention and manipulation. 8-BIT CONSTANT CURRENT LED DRIVERS . Version:A.036 ST2221A Page: 16 ...