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| (R) 74ACT8244 RELAY DRIVER IC PRELIMINARY DATA s s s s s OPERATE 4 LATCHING RELAIS, 1 SINGLE SIDE STABLE RELAY AND 1 LED VERY LOW POWER CONSUMPTION TTL COMPATIBLE INPUT THRESHOLDS IMPROVED LATCH-UP IMMUNITY UP TO 300mA TSSOP-20 PACKAGE T (TSSOP Package) ORDER CODES : 74ACT8244TTR DESCRIPTION The device is a relais driver for line card application. It is able to operate four latching relais, one single side stable relay an one LED connected either to GND or VCC. All the outputs can be set to LOW with the RST input as shown in the true table. PIN DESCRIPTION PIN No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 SYMBOL RST IN1A IN1B IN2A IN2B IN3A IN3B IN4 IN5 GND NC OUT5 OUT4 OU3B OU3A OU2B OU2A OU1B OU1A VCC NAME AND F UNCTION Master Reset Input of 1st latched relay drv Input of 1st latched relay drv Input of 2nd latched relay drv Input of 2nd latched relay drv Input of 3rd latched relay drv Input of 3rd latched relay drv Input of 1st relay driver Input LED driver Ground Not Connected Output of LED driver Output of 1st relay driver Output 3rd latched relay drv Output 3rd latched relay drv Output 2nd latched relay drv Output 2nd latched relay drv Output 1st latched relay drv Output 1st latched relay drv Supply Voltage LOGIC DIAGRAM April 1999 1/6 74ACT8244 ABSOLUTE MAXIMUM RATINGS Symbol VCC VI VO IIK IOK IO ICC orIGND Tstg Supply Voltage DC Input Voltage DC Output Voltage DC Input Diode Current DC Output Diode Current DC Output Current DC VCC or Ground Current Storage Temperature Parameter Value -0.5 to +7 -0.5 to VCC + 0.5 -0.5 to VCC + 0.5 50 50 100 250 -65 to +150 Unit V V V mA mA mA mA o C Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. RECOMMENDED OPERATING CONDITIONS Symbol VCC VI VO Top dt/dv Supply Voltage Input Voltage Output Voltage Operating Temperature: Input Rise and Fall Time VCC = 4.5 to 5.5V (note1) Parameter Value 4.75 to 5.25 0 to VCC 0 to VCC -30 to +80 10 Unit V V V o C ns/V 1) VIN from 0.8 V to 2.0 V DC SPECIFICATIONS Symb ol VIH VIL VOH VOL VOH VOL VOH VOL II ICCT ICC Parameter High Level Input Threshold Low Level Input Threshold High Level Output Voltage for Single Driver Low Level Output Voltage for Single Driver High Level Output Voltage for Double Relay Driver Low Level Output Voltage for Double Relay Driver High Level Output Voltage for Single Side Relay or LED Low Level Output Voltage for Single Side Relay or LED Input Leakage Current Max ICC /Input Quiescent Supply Current Test Co nditi ons Min. V O = 0.1 V or V CC - 0.1 V V O = 0.1 V or V CC - 0.1 V I OUT = -35mA I OUT = 35mA I OUT = -70mA I OUT = 70mA I OUT = -50mA I OUT = 50mA V I = VCC or GND V I = VCC -2.1 V V I = VCC or GND 0.6 4 2.0 Value T yp. 1.4 1.4 VCC-0.68 VCC-0.3 0.25 VCC-0.68 VCC-0.3 0.25 VCC-0.8 VCC-0.4 0.3 0.8 1 1.5 40 0.68 0.68 0.8 Max. V V V V V V V V A mA A Un it 2/6 74ACT8244 AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, RL = 500 , Input tr = tf =3 ns) Symb ol tPLH tPHL Parameter Propagation Delay Time T est Cond it ion Min. Valu e T yp. 7.0 Un it Max. 11.0 ns (*) Voltage range is 5V 0.5V TRUTH TABLE FOR LATCHING RELAY DRIVER INPUT RST H L L L L INn A X L L H H INn B X L H L H OUT PUT OUnA OUnB L L L H H L L H L H Storage Storage Operate Release Storage Co nditi on TRUTH TABLE FOR SINGLE SIDE RELAY INPUT IN4 L H OUTPUT OUT 4 H L TRUTH TABLE FOR LED DRIVER INPUT IN5 L H OUTPUT OUT 5 H L Z = High Impedance X = Don't Care n = 1,2,3 OUTPUT CIRCUIT FOR LATCHING RELAY DRIVER OUTPUT CIRCUIT FOR SINGLE SIDE RELAY OUTPUT CIRCUIT FOR LED DRIVER 3/6 74ACT8244 Output Characteristics of a Single Driver N-Channel Output Characteristics of a Single Driver P-Channel 4/6 74ACT8244 TSSOP20 MECHANICAL DATA mm MIN. A A1 A2 b c D E E1 e K L 0o 0.50 0.05 0.85 0.19 0.09 6.4 6.25 4.3 6.5 6.4 4.4 0.65 BSC 4o 0.60 8o 0.70 0o 0.020 0.10 0.9 TYP. MAX. 1.1 0.15 0.95 0.30 0.2 6.6 6.5 4.48 0.002 0.335 0.0075 0.0035 0.252 0.246 0.169 0.256 0.252 0.173 0.0256 BSC 4o 0.024 8o 0.028 0.004 0.354 MIN. inch TYP. MAX. 0.433 0.006 0.374 0.0118 0.0079 0.260 0.256 0.176 DIM. A A2 A1 b e K c L E D E1 PIN 1 IDENTIFICATION 1 5/6 74ACT8244 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a trademark of STMicroelectronics (c) 1999 STMicroelectronics - Printed in Italy - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - France - Germany - Italy - Japan - Korea - Malaysia - Malta - Mexico - Morocco - The Netherlands Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. http://www.st.com . 6/6 |
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