74ACT8244

74ACT8244 RELAY DRIVER IC s s s s s s OPERATES 4 LATCHES RELAIS, 1 SINGLE SIDE STABLE RELAY AND 1 LED VERY LOW POWER CONSUMPTION TTL COMPATIBLE INPUT THRESHOLDS IMPROVED LATCH-UP IMMUNITY UP TO 300mA OPERATING VOLTAGE RANGE: VCC(OPR) = 4.25V to 5.25V AVAILABLE IN TSSOP-20 PACKAGE ORDER CODES PACKAGE TSSOP TSSOP DESCRIPTION The device is a relais driver for line card application. It is able to operate four latching relais, one single side stable relay and 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. All inputs and outputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage. 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 FUNCTION 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 (0V) Not Connected Output LED driver Output of 1st relay driver Output of 3rd latched relay drv Output of 3rd latched relay drv Output of 2nd latched relay drv Output of 2nd latched relay drv Output of 1st latched relay drv Output of 1st latched relay drv Positive Supply Voltage TUBE T&R 74ACT8244TTR PIN CONNECTION June 2001 1/7 74ACT8244 ABSOLUTE MAXIMUM RATINGS Symbol VCC VI VO IIK IOK IO Tstg Supply Voltage DC Input Voltage DC Output Voltage DC Input Diode Current DC Output Diode Current DC Output Current Storage Temperature Parameter Value -0.5 to +7 -0.5 to VCC + 0.5 -0.5 to VCC + 0.5 ± 50 ± 50 ± 100 ± 400 -65 to +150 Unit V V V mA mA mA mA °C ICC or IGND DC VCC or Ground Current Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions 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 (note 1) Parameter Value 4.75 to 5.25 0 to VCC 0 to VCC -30 to 80 10 Unit V V V °C ns/V 1) VIN from 0.8V to 2.0V 2/7 74ACT8244 DC SPECIFICATIONS Value Symbol VIH VIL VOH VOL VOH VOL VOH VOL II ICCT ICC Parameter High Level Input Voltage Low Level Input Voltage 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 of LED Low Level Output Voltage for Single Side Relay of LED Input Leakage Current Max ICC/Input Quiescent Supply Current Test Condition Min. VO = 0.1 V or VCC-0.1V VO = 0.1 V or VCC-0.1V IO=-35mA IO=35mA IO=-70mA IO=70mA IO=-50mA IO=50mA VI = VCC or GND VI = VCC - 2.1V VI = VCC or GND 0.6 4 VCC-0.8 VCC-0.68 VCC-0.68 2.0 Typ. 1.4 1.4 VCC-0.3 0.25 VCC-0.3 0.25 VCC-0.4 0.3 0.8 ± 0.1 1.5 40 0.68 0.68 0.8 Max. V V V V V V V V µA mA µA Unit AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, RL = 500 Ω, Input tr = tf = 3ns) Value Symbol tPLH tPHL Parameter Propagation Delay Time Test Condition Min. Over recommended operating conditions Typ. 7.0 Max. 11.0 ns Unit TRUTH TABLE FOR LATCHING RELAY DRIVER INPUT RST H L L L L INnA X L L H H INnB X L H L H OUTPUT Condition OUnA OUnB L L L H H L L H L H Storage Storage Operate Release Storage TRUTH TABLE FOR SINGLE SIDE RELAY INPUT IN4 L H OUTPUT OUT4 H L TRUTH TABLE FOR LED DRIVER INPUT IN5 L H OUTPUT OUT5 H L Z : High Impedance X : Don’t Care n : 1,2,3 3/7 74ACT8244 OUTPUT CIRCUIT FOR LATCHING RELAY DRIVER OUTPUT CIRCUIT FOR SINGLE SIDE RELAY OUTPUT CIRCUIT FOR LED DRIVER 4/7 74ACT8244 TYPICAL PERFORMANCE CHARACTERISTICS (unless otherwise specified Tj = 25°C) Figure 1 : Output Characteristics of a Double Relay Driver N-channel with All Output Loaded Figure 3 : Output Characteristics of a Double Relay Driver P-channel with All Output Loaded Figure 2 : Output Characteristics of a Single Side Relay or Led Driver N-channel with All Output Loaded Figure 4 : Output Characteristics of a Single Side Relay or Led Driver P-channel with All Output Loaded 5/7 74ACT8244 TSSOP20 MECHANICAL DATA mm. DIM. MIN. A A1 A2 b c D E E1 e K L 0° 0.45 0.60 0.05 0.8 0.19 0.09 6.4 6.2 4.3 6.5 6.4 4.4 0.65 BSC 8° 0.75 0° 0.018 0.024 1 TYP MAX. 1.2 0.15 1.05 0.30 0.20 6.6 6.6 4.48 0.002 0.031 0.007 0.004 0.252 0.244 0.169 0.256 0.252 0.173 0.0256 BSC 8° 0.030 0.004 0.039 MIN. TYP. MAX. 0.047 0.006 0.041 0.012 0.0089 0.260 0.260 0.176 inch A A2 A1 b e K c L E D E1 PIN 1 IDENTIFICATION 1 0087225C 6/7 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. Specifications 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 registered trademark of STMicroelectronics © 2001 STMicroelectronics - Printed in Italy - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom © http://www.st.com 7/7