74LS194A

74LS194A NSC | Alldatasheet

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Y Parallel inputs and outputs Y Four operating modes: Synchronous parallel load Right shift Left shift Do nothing Y Positive edge-triggered clocking Y Direct overriding clear Connection Diagram Dual-In-Line Package TL/F/6407–1 Order Number 54LS194ADMQB, 54LS194AFMQB, 54LS194ALMQB, DM74LS194AM or DM74LS194AN See NS Package Number E20A, J16A, M16A, 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 7V Operating Free Air Temperature Range 54LS b55§Ct o a125§C DM74LS 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 54LS194A DM74LS194A 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 0.7 0.8 V IOH High Level Output Current b0.4 b0.4 mA IOL Low Level Output Current 4 8 mA fCLK Clock Frequency (Note 1) 30 0 0 25 MHz Clock Frequency (Note 2) 22 0 20 tW Pulse Width Clock 17 20 ns(Note 3) Clear 12 20 tSU Setup Time Mode 25 30 ns(Note 3) Data 16 20 tH Hold Time (Note 3) 0 0 ns tREL Clear Release Time (Note 3) 18 25 ns TA Free Air Operating Temperature b55 125 0 70 §C Note 1: CL e 15 pF, T A e 25§C and V CC e 5V. Note 2: CL e 50 pF, R L e 2k X,T A e 25§C and V CC e 5V. Note 3: TA e 25§C and V CC e 5V. Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Symbol Parameter Conditions Min Typ Max Units(Note 4) VI Input Clamp Voltage V CC e Min, I I eb 18 mA b1.5 V VOH High Level Output V CC e Min, I OH e Max 54LS 2.5 VVoltage VIL e Max, V IH e Min DM74 2.7 3.4 VOL Low Level Output V CC e Min, I OL e Max 54LS 0.4 Voltage V IL e Max, V IH e Min DM74 0.35 0.5 V IOL e 4 mA, V CC e Min 0.4 II Input Current @ Max V CC e Max, V I e 7V 0.1 mAInput Voltage IIH High Level Input Current V CC e Max, V I e 2.7V 20 mA IIL Low Level Input Current V CC e Max, V I e 0.4V b0.4 mA IOS Short Circuit V CC e Max 54LS b20 b100 mAOutput Current (Note 5) DM74 b20 b100 ICC Supply Current V CC e Max (Note 6) 15 23 mA Note 4: All typicals are at V CC e 5V, T A e 25§C. Note 5: Not more than one output should be shorted at a time, and the duration should not exceed one second. Note 6: With all outputs open, inputs A through D grounded, and 4.5V applied to S0, S1, CLEAR, and the serial inputs, I CC is tested with momentary ground, then 4.5V applied to CLOCK.

Switching Characteristics at V CC e 5V and T A e 25§C (See Section 1 for Test Waveforms and Output Load) From (Input) 54LS DM74LS Symbol Parameter To (Output) C L e 15 pF CL e 50 pF UnitsRL e 2k X Min Max Min Max fMAX Maximum Clock 30 20 MHzFrequency tPLH Propagation Delay Time Clock to 21 26 nsLow to High Level Output Any Q tPHL Propagation Delay Time Clock to 24 35 nsHigh to Low Level Output Any Q tPHL Propagation Delay Time Clear to 26 38 nsHigh to Low Output Any Q 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, and the duration should not exceed one second. Note 3: With all outputs open, inputs A through D grounded, and 4.5V applied to S0, S1, CLEAR, and the serial inputs, I CC is tested with momentary ground, then 4.5V applied to CLOCK. Logic Diagram LS194A TL/F/6407–2 Function Table Inputs Outputs Clear Mode Clock Serial Parallel QA QB QC QD S1 S0 Left Right A B C D L X X X X X XXXX L L L L H X X L X X XXXXQ A0 QB0 QC0 QD0 HH H u XX a b c d a b c d HL H u X H XXXX H Q An QBn QCn HL H u X L XXXX L Q An QBn QCn HH L u H X XXXXQ Bn QCn QDn H HH L u L X XXXXQ Bn QCn QDn L H L L X X X XXXXQ A0 QB0 QC0 QD0 H e High Level (steady state), L e Low Level (steady state), X e Don’t Care (any input, including transitions) u e Transition from low to high level a, b, c, d e The level of steady state input at inputs A, B, C or D, respectively. QA0,Q B0,Q C0,Q D0 e The level of Q A,Q B,Q C,o rQ D, respectively, before the indicated steady state input conditions were established. QAn,Q Bn,Q Cn,Q Dn e The level of Q A,Q B,Q C, respectively, before the most-recent u transition of the clock.

Typical Clear, Load, Right-Shift, Left-Shift, Inhibit, and Clear Sequences TL/F/6407–3

Physical Dimensions inches (millimeters) Ceramic Leadless Chip Carrier Package (E) Order Number 54LS194ALMQB 16-Lead Ceramic Dual-In-Line Package (J) Order Number 54LS194ADMQB

Physical Dimensions inches (millimeters) (Continued) 16-Lead Small Outline Molded Package (M) Order Number DM74LS194AM 16-Lead Molded Dual-In-Line Package (N) Order Number DM74LS194AN

54LS194A/DM74LS194A 4-Bit Bidirectional Universal Shift Register Physical Dimensions inches (millimeters) (Continued) 16-Lead Ceramic Flat Package (W) Order Number 54LS194AFMQB 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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