SN74LS280D

SN54/74LS280 9-BIT ODD/EVEN PARITY GENERATORS/CHECKERS The SN54/ 74LS280 is a Universal 9-Bit Parity Generator / Checker. It features odd / even outputs to facilitate either odd or even parity. By cascading, the word length is easily expanded. The LS280 is designed without the expander input implementation, but the corresponding function is provided by an input at Pin 4 and the absence of any connection at Pin 3. This design permits the LS280 to be substituted for the LS180 which results in improved performance. The LS280 has buffered inputs to lower the drive requirements to one LS unit load. 9-BIT ODD/ EVEN PARITY GENERATORS/ CHECKERS LOW POWER SCHOTTKY • • • • • Generates Either Odd or Even Parity for Nine Data Lines Typical Data-to-Output Delay of only 33 ns Cascadable for n-Bits Can Be Used To Upgrade Systems Using MSI Parity Circuits Typical Power Dissipation = 80 mW INPUTS VCC 14 F 13 F G H 1 G 2 H 3 NC I E 12 E D 11 D C 10 C B 9 B A 8 J SUFFIX CERAMIC CASE 632-08 14 1 14 N SUFFIX PLASTIC CASE 646-06 1 EVEN ODD 14 1 ∑ ∑ A INPUTS 4 5 6 7 ∑ GND I ∑ INPUT EVEN ODD D SUFFIX SOIC CASE 751A-02 OUTPUTS ORDERING INFORMATION FUNCTION TABLE NUMBER OF INPUTS A THRU 1 THAT ARE HIGH 0, 2, 4, 6, 8 1, 3, 5, 7, 9 H = HIGH Level, L = LOW Level OUTPUTS ∑EVEN H L ∑ODD L H SN54LSXXXJ SN74LSXXXN SN74LSXXXD Ceramic Plastic SOIC GUARANTEED OPERATING RANGES Symbol VCC TA IOH IOL Supply Voltage Operating Ambient Temperature Range Output Current — High Output Current — Low Parameter 54 74 54 74 54, 74 54 74 Min 4.5 4.75 – 55 0 Typ 5.0 5.0 25 25 Max 5.5 5.25 125 70 – 0.4 4.0 8.0 Unit V °C mA mA FAST AND LS TTL DATA 5-456 SN54/74LS280 FUNCTIONAL BLOCK DIAGRAM A (8) B (9) C (10) (5) ∑ EVEN D (11) E (12) F (13) (6) ∑ ODD G (1) H (2) I (4) DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol VIH VIL VIK VOH Parameter Input HIGH Voltage 54 Input LOW Voltage 74 Input Clamp Diode Voltage 54 Output HIGH Voltage 74 54, 74 VOL Output LOW Voltage 74 Input HIGH Current 0.1 Input LOW Current Short Circuit Current (Note 1) Power Supply Current – 20 – 0.4 – 100 27 0.35 0.5 20 IIH IIL IOS ICC V µA mA mA mA mA 2.7 3.5 0.25 0.4 V V 2.5 – 0.65 3.5 0.8 – 1.5 V V Min 2.0 0.7 V Typ Max Unit V Test Conditions Guaranteed Input HIGH Voltage for All Inputs Guaranteed Input LOW Voltage for All Inputs VCC = MIN, IIN = – 18 mA VCC = MIN, IOH = MAX, VIN = VIH or VIL per Truth Table IOL = 4.0 mA IOL = 8.0 mA VCC = VCC MIN, VIN = VIL or VIH per Truth Table VCC = MAX, VIN = 2.7 V VCC = MAX, VIN = 7.0 V VCC = MAX, VIN = 0.4 V VCC = MAX VCC = MAX Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. AC CHARACTERISTICS (TA = 25°C, VCC = 5.0 V) Limits Symbol tPLH tPHL tPLH tPHL Parameter Propagation Delay, Data to Output ΣEVEN Propagation Delay, Data to Output ΣODD Min Typ 33 29 23 31 Max 50 45 35 50 Unit ns CL = 15 pF ns Test Conditions FAST AND LS TTL DATA 5-457 Case 751A-02 D Suffix 14-Pin Plastic SO-14 -A14 8 NOTES: 1. DIMENSIONS A" AND B" ARE DATUMS AND T" IS A DATUM SURFACE. 2. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 3. 4. CONTROLLING DIMENSION: MILLIMETER. DIMENSION A AND B DO NOT INCLUDE MOLD PROTRUSION. 5. MAXIMUM MOLD PROTRUSION 0.15 (0.006) PER SIDE. 6. 751A 01 IS OBSOLETE, NEW STANDARD 751A 02. -B1 7 P 7 PL 0.25 (0.010) M B M G C SEATING PLANE R X 45° D 14 PL 0.25 (0.010) M K T B S M F J A S DIM A B C D F G J K M P R MILLIMETERS MIN MAX 8.55 3.80 1.35 0.35 0.40 8.75 4.00 1.75 0.49 1.25 INCHES MIN MAX 0.337 0.150 0.054 0.014 0.016 0.344 0.157 0.068 0.019 0.049 1.27 BSC 0.19 0.10 0 0.25 0.25 7 0.050 BSC 0.008 0.004 0 0.009 0.009 7 ° ° ° ° 5.80 0.25 6.20 0.50 0.229 0.010 0.244 0.019 Case 632-08 J Suffix 14-Pin Ceramic Dual In-Line -A14 8 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. -B1 7 3. DIMENSION L TO CENTER OF LEAD WHEN FORMED PARALLEL. 4. DIM F MAY NARROW TO 0.76 (0.030) WHERE THE LEAD ENTERS THE CERAMIC BODY. 5. 632 01 THRU 07 OBSOLETE, NEW STANDARD C L 632 08. -TSEATING PLANE K F D 14 PL 0.25 (0.010) M G T A S N J 14 PL M 0.25 (0.010) M T B S DIM A B C D F G J K L M N MILLIMETERS MIN MAX 19.05 6.23 3.94 0.39 1.40 19.94 7.11 5.08 0.50 1.65 INCHES MIN MAX 0.750 0.245 0.155 0.015 0.055 0.785 0.280 0.200 0.020 0.065 2.54 BSC 0.21 3.18 0.38 4.31 0.100 BSC 0.008 0.125 0.015 0.170 7.62 BSC 0 ° 15 ° 0.300 BSC 0 ° 15 ° 0.51 1.01 0.020 0.040 Case 646-06 N Suffix 14-Pin Plastic NOTES: 1. LEADS WITHIN 0.13 mm (0.005) RADIUS OF TRUE POSITION AT SEATING PLANE AT MAXIMUM MATERIAL CONDITION. 14 8 B 1 7 2. DIMENSION L" TO CENTER OF LEADS WHEN FORMED PARALLEL. 3. DIMENSION B" DOES NOT INCLUDE MOLD FLASH. 4. 5. ROUNDED CORNERS OPTIONAL. 646 05 OBSOLETE, NEW STANDARD 646 06. A F C N H G D SEATING PLANE NOTE 4 L J K M DIM A B C D F G H J K L M N MILLIMETERS MIN MAX 18.16 6.10 3.69 0.38 1.02 19.56 6.60 4.69 0.53 1.78 INCHES MIN MAX 0.715 0.240 0.145 0.015 0.040 0.770 0.260 0.185 0.021 0.070 2.54 BSC 1.32 0.20 2.92 2.41 0.38 3.43 0.100 BSC 0.052 0.008 0.115 0.095 0.015 0.135 7.62 BSC 0 ° 10 ° 0.300 BSC 0 ° 10 ° 0.39 1.01 0.015 0.039 FAST AND LS TTL DATA 5-458 Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters can and do vary in different applications. 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ASIA PACIFIC: Motorola Semiconductors H.K. Ltd.; Silicon Harbour Center, No. 2 Dai King Street, Tai Po Industrial Estate, Tai Po, N.T., Hong Kong. ◊ FAST AND LS TTL DATA 5-459