54191 NSC | Alldatasheet

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Y Single down/up count control line Y Count enable control input Y Ripple clock output for cascading Y Asynchronously presettable with load control Y Parallel outputs Y Cascadable for n-bit applications Y Alternate Military/Aerospace device (54191) is avail- able. Contact a National Semiconductor Sales Office/ Distributor for specifications. Connection Diagram Dual-In-Line Package TL/F/6562–1 Order Number 54191DMQB, 54191FMQB, DM54191J, DM54191W or DM74191N See NS Package Number J16A, N16E or W16A 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 and 54 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 DM54191 DM74191 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 fCLK Clock Frequency (Note 4) 0 20 0 20 MHz tW Pulse Width Clock 25 25 ns(Note 4) Load 35 35 tSU Data Setup Time (Note 4) 28 28 ns tH Hold Time (Note 4) 0 0 ns tREL Load Release Time (Note 4) 30 30 ns 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 3.4 VVoltage V IL e Max, V IH e Min VOL Low Level Output V CC e Min, I OL e Max 0.2 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 Enable 120 mACurrent V I e 2.4V Others 40 IIL Low Level Input V CC e Max Enable b4.8 mACurrent V I e 0.4V Others b1.6 IOS Short Circuit V CC e Max DM54 b20 b65 mAOutput Current (Note 2) DM74 b18 b65 ICC Supply Current V CC e Max DM54 65 99 mA(Note 3) DM74 65 105 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 all inputs grounded and all outputs open. Note 4: TA e 25§C and V CC e 5V.

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) R L e 400X,C L e 15 pF UnitsTo (Output) Min Max fMAX Maximum Clock Frequency 20 MHz tPLH Propagation Delay Time Load to 33 nsLow to High Level Output Any Q tPHL Propagation Delay Time Load to 70 nsHigh to Low Level Output Any Q tPLH Propagation Delay Time Data to 22 nsLow to High Level Output Any Q tPHL Propagation Delay Time Data to 70 nsHigh to Low Level Output Any Q tPLH Propagation Delay Time Clock to 20 nsLow to High Level Output Ripple Carry tPHL Propagation Delay Time Clock to 24 nsHigh to Low Level Output Ripple Carry tPLH Propagation Delay Time Clock to 24 nsLow to High Level Output Any Q tPHL Propagation Delay Time Clock to 36 nsHigh to Low Level Output Any Q tPLH Propagation Delay Time Clock to 42 nsLow to High Level Output Max/Min tPHL Propagation Delay Time Clock to 52 nsHigh to Low Level Output Max/Min tPLH Propagation Delay Time Down/Up to 45 nsLow to High Level Output Ripple Carry tPHL Propagation Delay Time Down/Up to 45 nsHigh to Low Level Output Ripple Carry tPLH Propagation Delay Time Down/Up to 33 nsLow to High Level Output Max/Min tPHL Propagation Delay Time Down/Up to 33 nsHigh to Low Level Output Max/Min tPLH Propagation Delay Time Enable G to 24 nsLow to High Level Output Ripple Carry tPHL Propagation Delay Time Enable G to 24 nsHigh to Low Level Output Ripple Carry

191 Binary Counter

Pin (16) e VCC, Pin (8) e GND TL/F/6562–2

191 Decade Counter

Typical Load, Count, and Inhibit Sequences TL/F/6562–3 Physical Dimensions inches (millimeters) 16-Lead Ceramic Dual-In-Line Package (J) Order Number 54191DMQB or DM54191J

54191/DM54191/DM74191 Synchronous Up/Down 4-Bit Binary Counter with Mode Control Physical Dimensions inches (millimeters) (Continued) 16-Lead Molded Dual-In-Line Package (N) Order Number DM74191N 16-Lead Ceramic Flat Package (W) Order Number 54191FMQB or DM54191W 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.