74ACT280MTR

74ACT280 9 BIT PARITY GENERATOR/CHECKER ■ ■ ■ ■ ■ ■ ■ ■ ■ HIGH SPEED: tPD = 7ns (TYP.) at VCC = 5V LOW POWER DISSIPATION: ICC = 4µA(MAX.) at TA=25°C COMPATIBLE WITH TTL OUTPUTS VIH = 2V (MIN.), V IL = 0.8V (MAX.) 50Ω TRANSMISSION LINE DRIVING CAPABILITY SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 24mA (MIN) BALANCED PROPAGATION DELAYS: tPLH ≅ tPHL OPERATING VOLTAGE RANGE: VCC (OPR) = 4.5V to 5.5V PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 280 IMPROVED LATCH-UP IMMUNITY DIP u d o TSSOP ORDER CODES DESCRIPTION The 74ACT280 is an advanced high-speed CMOS 9 BIT PARITY GENERATOR CHECKER fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS tecnology. It is composed of nine data inputs (A to I) and odd/ even parity outputs (ΣODD and ΣEVEN). The nine data inputs control the output conditions. When the number of high level input is odd, ΣODD output is kept high and ΣEVEN output low. ) s ( ct SOP PACKAGE TUBE DIP SOP TSSOP 74ACT280B 74ACT280M ) s t( T&R o r P c u d 74ACT280MTR 74ACT280TTR Conservely, when the output is even, ΣEVEN output is kept high and ΣODD low. The IC generates either odd or even parity making it flexible application. The word-length capability is easly expanded by cascading. The device is designed to interface directly High Speed CMOS systems with TTL, NMOS and CMOS output voltage levels. All inputs and outputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage. e t le o s b O - r P e PIN CONNECTION AND IEC LOGIC SYMBOLS t e l o s b O April 2001 1/9 74ACT280 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PIN No SYMBOL NAME AND FUNCTION ΣEVEN 5, 6 8, 9, 10, 11, 12, 13, 1, 2, 4 3 7 14 Parity Outputs ΣODD A to I Data Inputs NC GND VCC No Connection Ground (0V) Positive Supply Voltage TRUTH TABLE OUTPUT NUMBER OF INPUTS A - I THAT ARE HIGH ΣEVEN 0, 2, 4, 6, 8 1, 3, 5, 7, 9 H L d o r LOGIC DIAGRAM P e let ) s ( ct u d o r P e t e l o s b O 2/9 uc o s b O - ) s t( ΣODD L H 74ACT280 ABSOLUTE MAXIMUM RATINGS Symbol VCC Parameter Value Supply Voltage Unit -0.5 to +7 V -0.5 to VCC + 0.5 -0.5 to VCC + 0.5 V DC Input Diode Current ± 20 mA IOK DC Output Diode Current ± 20 mA IO DC Output Current ± 50 mA ± 200 mA VI DC Input Voltage VO DC Output Voltage IIK ICC or IGND DC VCC or Ground Current Tstg Storage Temperature TL Lead Temperature (10 sec) V -65 to +150 °C 300 °C 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 Parameter Value Unit uc Supply Voltage 4.5 to 5.5 VI Input Voltage 0 to VCC VO Output Voltage Top Operating Temperature dt/dv 1) VIN from 0.8V to 2.0V ) s ( ct d o r P e let Input Rise and Fall Time VCC = 4.5 to 5.5V (note 1) ) s t( V V 0 to VCC V -55 to 125 °C 8 ns/V o s b O - u d o r P e t e l o s b O 3/9 74ACT280 DC SPECIFICATIONS Test Condition Symbol VIH Parameter Value TA = 25°C VCC (V) Max. -40 to 85°C -55 to 125°C Min. Min. Min. Typ. 2.0 1.5 2.0 2.0 1.5 2.0 Max. Max. High Level Input Voltage 4.5 5.5 VO = 0.1 V or VCC-0.1V VIL Low Level Input Voltage 4.5 5.5 VO = 0.1 V or VCC-0.1V VOH High Level Output Voltage 4.5 IO=-50 µA 4.4 4.49 4.4 4.4 5.5 IO=-50 µA 5.4 5.49 5.4 5.4 4.5 IO=-24 mA 3.86 3.76 3.7 5.5 IO=-24 mA 4.86 4.76 4.7 4.5 IO=50 µA 0.001 0.1 0.1 0.1 5.5 IO=50 µA 0.001 0.1 0.1 0.1 4.5 IO=24 mA 0.36 0.44 5.5 IO=24 mA 0.36 0.44 5.5 VI = VCC or GND ± 0.1 ±1 5.5 VI = VCC - 2.1V VI = VCC or GND VOL Low Level Output Voltage II ICCT Input Leakage Current Max ICC/Input ICC Quiescent Supply Current 5.5 IOLD Dynamic Output Current (note 1, 2) 5.5 IOHD 1.5 1.5 0.8 0.8 2.0 e t le VOLD = 1.65 V max o s b O - V 0.8 0.8 V ) s t( V 0.5 c u d o r P 1.5 4 VOHD = 3.85 V min 2.0 0.8 0.8 0.6 Unit 40 0.5 ±1 µA 1.6 mA 80 µA 75 50 mA -75 -50 mA 1) Maximum test duration 2ms, one output loaded at time 2) Incident wave switching is guaranteed on transmission lines with impedances as low as 50Ω AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, RL = 500 Ω, Input tr = tf = 3ns) (s) Test Condition Symbol Parameter o r P e tPLH tPHL Propagation Delay Time (Input ΣODD, ΣEVEN) VCC (V) ct du 5.0(*) Value TA = 25°C -40 to 85°C -55 to 125°C Min. Typ. Max. Min. Max. Min. Max. 3.0 7.0 13.0 2.0 14.5 2.0 14.5 Unit ns (*) Voltage range is 5.0V ± 0.5V t e l o CAPACITIVE CHARACTERISTICS bs O Symbol Parameter Test Condition TA = 25°C VCC (V) CIN Input Capacitance 5.0 CPD Power Dissipation Capacitance (note 1) 5.0 Value Min. fIN = 10MHz Typ. Max. -40 to 85°C -55 to 125°C Min. Min. Max. Unit Max. 4 pF 67 pF 1) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. ICC(opr) = CPD x VCC x f IN + ICC/n (per circuit) 4/9 74ACT280 TEST CIRCUIT CL = 50pF or equivalent (includes jig and probe capacitance) RL = R1 = 500Ω or equivalent RT = ZOUT of pulse generator (typically 50Ω) WAVEFORM: PROPAGATION DELAYS (f=1MHz; 50% duty cycle) e t le ) s ( ct c u d ) s t( o r P o s b O - u d o r P e t e l o s b O 5/9 74ACT280 Plastic DIP-14 MECHANICAL DATA mm DIM. MIN. a1 0.51 B 1.39 TYP. inch MAX. MIN. TYP. 0.020 1.65 0.055 0.065 b 0.5 0.020 b1 0.25 0.010 D 20 0.787 E 8.5 0.335 e 2.54 0.100 e3 15.24 0.600 F 7.1 I 5.1 L c u d e t le 3.3 Z MAX. 1.27 2.54 ) s ( ct o s b O - 0.050 o r P ) s t( 0.280 0.201 0.130 0.100 u d o r P e t e l o s b O P001A 6/9 74ACT280 SO-14 MECHANICAL DATA mm DIM. MIN. TYP. A inch MAX. MIN. TYP. MAX. a1 1.75 0.1 0.068 0.2 a2 0.003 0.007 1.65 0.064 b 0.35 0.46 0.013 0.018 b1 0.19 0.25 0.007 0.010 C 0.5 0.019 c1 45 (typ.) D 8.55 8.75 0.336 0.344 E 5.8 6.2 0.228 ) s t( 0.244 e 1.27 0.050 e3 7.62 0.300 F 3.8 4.0 0.149 G 4.6 5.3 0.181 L 0.5 1.27 0.019 M e t le 0.68 S 8 (max.) ) s ( ct o r P c u d 0.157 0.208 0.050 0.026 o s b O - u d o r P e t e l o s b O P013G 7/9 74ACT280 TSSOP14 MECHANICAL DATA mm DIM. MIN. inch TYP. A MIN. TYP. MAX. 1.1 0.433 A1 0.05 0.10 0.15 0.002 0.004 0.006 A2 0.85 0.9 0.95 0.335 0.354 0.374 b 0.19 0.30 0.0075 0.0118 c 0.09 0.20 0.0035 0.0079 D 4.9 5 5.1 0.193 0.197 E 6.25 6.4 6.5 0.246 0.252 E1 4.3 4.4 4.48 0.169 0.173 e o K 0 L 0.50 o A1 b o r P e du t e l o s b O o 4 8 0.60 0.70 e e t le 0 o s b O - 1 0.020 K c 0.176 4o 8o 0.024 0.028 L E D E1 PIN 1 IDENTIFICATION o r P 0.256 0.0256 BSC o ) s ( ct A2 ) s t( 0.201 c u d 0.65 BSC A 8/9 MAX. 74ACT280 c u d e t le ) s ( ct ) s t( o r P o s b O - u d o r P e t e l o s b O 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 9/9