DM74180

DM54180 NSC | Alldatasheet

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DM54180/DM74180 9-Bit Parity Generators/Checkers June 1989 DM54180/DM74180 9-Bit Parity Generators/Checkers General Description These universal 9-bit (8 data bits plus 1 parity bit) parity generators/checkers feature odd/even outputs and control inputs to facilitate operation in either odd or even parity ap- plications. Depending on whether even or odd parity is be- ing generated or checked, the even or odd input can be utilized as the parity or 9th-bit input. The word-length capa- bility is easily expanded by cascading. Input buffers are provided so that each data input repre- sents only one normalized series 54/74 load. A full fan-out to 10 normalized series 54/74 loads is available from each of the outputs at a low logic level. A fan-out to 20 normal- ized loads is provided at a high logic level to facilitate the connection of unused inputs to used inputs. Connection Diagram Dual-In-Line Package TL/F/6559–1 Order Number DM54180J, DM54180W or DM74180N See NS Package Number J14A, N14A or W14B Function Table Inputs Outputs R of H’s at Even Odd RR A thru H Even Odd Even H L H L Odd H L L H Even L H L H Odd L H H L XH H L L XL L H H H e High Level, L e Low Level, X e Don’t Care C1995 National Semiconductor Corporation RRD-B30M105/Printed in U. S. A.

Absolute Maximum Ratings (Note) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/Distributors for availability and specifications. Supply Voltage 7V Input Voltage 5.5V Operating Free Air Temperature Range DM54 b55§Ct o a125§C DM74 0 §Ct o a70§C Storage Temperature Range b65§Ct o a150§C Note: The ‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot be guaran- teed. The device should not be operated at these limits. The parametric values defined in the ‘‘Electrical Characteristics’’ table are not guaranteed at the absolute maximum ratings. The ‘‘Recommended Operating Conditions’’ table will define the conditions for actual device operation. Recommended Operating Conditions Symbol Parameter DM54180 DM74180 Units Min Nom Max Min Nom Max VCC Supply Voltage 4.5 5 5.5 4.75 5 5.25 V VIH High Level Input Voltage 2 2 V VIL Low Level Input Voltage 0.8 0.8 V IOH High Level Output Current b0.8 b0.8 mA IOL Low Level Output Current 16 16 mA TA Free Air Operating Temperature b55 125 0 70 §C Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Symbol Parameter Conditions Min Typ Max Units(Note 1) VI Input Clamp Voltage V CC e Min, I I eb 12 mA b1.5 V VOH High Level Output V CC e Min, I OH e Max 2.4 VVoltage V IL e Max, V IH e Min VOL Low Level Output V CC e Min, I OL e Max 0.4 VVoltage V IH e Min, V IL e Max II Input Current @ Max V CC e Max, V I e 5.5V 1m AInput Voltage IIH High Level Input V CC e Max Odd or Even 80 mACurrent V I e 2.4V Data 40 IIL Low Level Input V CC e Max Odd or Even b3.2 mACurrent V I e 0.4V Data b1.6 IOS Short Circuit V CC e Max DM54 b20 b55 mAOutput Current (Note 2) DM74 b18 b55 ICC Supply Current V CC e Max DM54 34 49 mA(Note 3) DM74 34 56 Note 1: All typicals are at V CC e 5V, T A e 25§C. Note 2: Not more than one output should be shorted at a time. Note 3: ICC is measured with EVEN and ODD inputs at 4.5V, all other inputs and outputs open.

Switching Characteristics at V CC e 5V and T A e 25§C (See Section 1 for Test Waveforms and Output Load) Symbol Parameter From (Input) Conditions Min Max UnitsTo (Output) tPLH Propagation Delay Time Data to C L e 15 pF 60 nsLow to High Level Output R Even R L e 400X tPHL Propagation Delay Time Data to Odd Input Low 68 nsHigh to Low Level Output R Even tPLH Propagation Delay Time Data to 48 nsLow to High Level Output R Odd tPHL Propagation Delay Time Data to 38 nsHigh to Low Level Output R Odd tPLH Propagation Delay Time Data to C L e 15 pF 48 nsLow to High Level Output R Even R L e 400X tPHL Propagation Delay Time Data to Odd Input High 38 nsHigh to Low Level Output R Even tPLH Propagation Delay Time Data to 60 nsLow to High Level Output R Odd tPHL Propagation Delay Time Data to 68 nsHigh to Low Level Output R Odd tPLH Propagation Delay Time Even or Odd to C L e 15 pF 20 nsLow to High Level Output R Even or R Odd R L e 400X tPHL Propagation Delay Time Even or Odd to 10 nsHigh to Low Level Output R Even or R Odd Logic Diagram TL/F/6559–2

Physical Dimensions inches (millimeters) 14-Lead Ceramic Dual-In-Line Package (J) Order Number DM54180J 14-Lead Molded Dual-In-Line Package (N) Order Number DM74180N

DM54180/DM74180 9-Bit Parity Generators/Checkers Physical Dimensions inches (millimeters) 14-Lead Ceramic Flat Package (W) Order Number DM54180W LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or 2. A critical component is any component of a life systems which, (a) are intended for surgical implant support device or system whose failure to perform can into the body, or (b) support or sustain life, and whose be reasonably expected to cause the failure of the life failure to perform, when properly used in accordance support device or system, or to affect its safety or with instructions for use provided in the labeling, can effectiveness. be reasonably expected to result in a significant injury to the user. National Semiconductor National Semiconductor National Semiconductor National Semiconductor Corporation Europe Hong Kong Ltd. Japan Ltd.

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a49) 0-180-530 85 86 13th Floor, Straight Block, Tel: 81-043-299-2309 Arlington, TX 76017 Email: cnjwge @ tevm2.nsc.com Ocean Centre, 5 Canton Rd. Fax: 81-043-299-2408 Tel: 1(800) 272-9959 Deutsch Tel: ( a49) 0-180-530 85 85 Tsimshatsui, Kowloon Fax: 1(800) 737-7018 English Tel: ( a49) 0-180-532 78 32 Hong Kong Fran3ais Tel: ( a49) 0-180-532 93 58 Tel: (852) 2737-1600 Italiano Tel: ( a49) 0-180-534 16 80 Fax: (852) 2736-9960 National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.