74LS139

54LS138 NSC | Alldatasheet

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Y Designed specifically for high speed: Memory decoders Data transmission systems Y LS138 3-to-8-line decoders incorporates 3 enable in- puts to simplify cascading and/or data reception Y LS139 contains two fully independent 2-to-4-line decod- ers/demultiplexers Y Schottky clamped for high performance Y Typical propagation delay (3 levels of logic) LS138 21 ns LS139 21 ns Y Typical power dissipation LS138 32 mW LS139 34 mW Y Alternate Military/Aerospace devices (54LS138, 54LS139) are available. Contact a National Semicon- ductor Sales Office/Distributor for specifications. Connection Diagrams Dual-in-Line Package TL/F/6391–1 Order Number 54LS138DMQB, 54LS138FMQB, 54LS138LMQB, DM54LS138J, DM54LS138W, DM74LS138M or DM74LS138N See NS Package Number E20A, J16A, M16A, N16E or W16A Dual-in-Line Package TL/F/6391–2 Order Number 54LS139DMQB, 54LS139FMQB, 54LS139LMQB, DM54LS139J, DM54LS139W, DM74LS139M or DM74LS139N 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 DM54LS and 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 DM54LS138 DM74LS138 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 TA Free Air Operating Temperature b55 125 0 70 §C ’LS138 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 18 mA b1.5 V VOH High Level Output V CC e Min, I OH e Max, DM54 2.5 3.4 VVoltage V IL e Max, V IH e Min DM74 2.7 3.4 VOL Low Level Output V CC e Min, I OL e Max, DM54 0.25 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 DM74 0.25 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 b0.36 mA IOS Short Circuit V CC e Max DM54 b20 b100 mAOutput Current (Note 2) DM74 b20 b100 ICC Supply Current V CC e Max (Note 3) 6.3 10 mA 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: ICC is measured with all outputs enabled and open.

’LS138 Switching Characteristics at V CC e 5V and T A e 25§C (See Section 1 for Test Waveforms and Output Load) From (Input) Levels RL e 2k X Symbol Parameter To (Output) of Delay CL e 15 pF C L e 50 pF Units Min Max Min Max tPLH Propagation Delay Time Select to 21 8 2 7 n sLow to High Level Output Output tPHL Propagation Delay Time Select to 22 7 4 0 n sHigh to Low Level Output Output tPLH Propagation Delay Time Select to 31 8 2 7 n sLow to High Level Output Output tPHL Propagation Delay Time Select to 32 7 4 0 n sHigh to Low Level Output Output tPLH Propagation Delay Time Enable to 21 8 2 7 n sLow to High Level Output Output tPHL Propagation Delay Time Enable to 22 4 4 0 n sHigh to Low Level Output Output tPLH Propagation Delay Time Enable to 31 8 2 7 n sLow to High Level Output Output tPHL Propagation Delay Time Enable to 32 8 4 0 n sHigh to Low Level Output Output Recommended Operating Conditions Symbol Parameter DM54LS139 DM74LS139 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 TA Free Air Operating Temperature b55 125 0 70 §C

’LS139 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 18 mA b1.5 V VOH High Level Output V CC e Min, I OH e Max, DM54 2.5 3.4 VVoltage V IL e Max, V IH e Min DM74 2.7 3.4 VOL Low Level Output V CC e Min, I OL e Max DM54 0.25 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 DM74 0.25 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 b0.36 mA IOS Short Circuit V CC e Max DM54 b20 b100 mAOutput Current (Note 2) DM74 b20 b100 ICC Supply Current V CC e Max (Note 3) 6.8 11 mA 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: ICC is measured with all outputs enabled and open. ’LS139 Switching Characteristics at V CC e 5V and T A e 25§C (See Section 1 for Test Waveforms and Output Load) From (Input) RL e 2k X Symbol Parameter To (Output) CL e 15 pF C L e 50 pF Units Min Max Min Max tPLH Propagation Delay Time Select to 18 27 nsLow to High Level Output Output tPHL Propagation Delay Time Select to 27 40 nsHigh to Low Level Output Output tPLH Propagation Delay Time Enable to 18 27 nsLow to High Level Output Output tPHL Propagation Delay Time Enable to 24 40 nsHigh to Low Level Output Output Function Tables LS138 Inputs Outputs Enable Select G1 G2 * CBAY OY 1Y 2Y 3Y 4Y 5Y 6Y 7 X HX X X H HHHHHHH L X X X X H HHHHHHH H L L L LL HHHHHHH H L L L H H LHHHHHH H L L H LH HLHHHHH H L L H H H HHLHHHH H L H L LH HHHLHHH H L H L H H HHHHLHH H L H H LH HHHHHLH H L H H H H HHHHHHL * G2 e G2A a G2B H e High Level, L e Low Level, X e Don’t Care LS139 Inputs Outputs Enable Select G BAY 0Y 1Y 2Y 3 H X X HHHH L L LLHHH L L H HLHH L H L HHLH L H H HHHL H e High Level, L e Low Level, X e Don’t Care

TL/F/6391–3 LS139 TL/F/6391–4

Physical Dimensions inches (millimeters) Ceramic Leadless Chip Carrier Package (E) Order Number 54LS138LMQB or 54LS139LMQB 16-Lead Ceramic Dual-In-Line Package (J) Order Number 54LS138DMQB, 54LS139DMQB, DM54LS138J or DM54LS139J

Physical Dimensions inches (millimeters) (Continued) 16-Lead Small Outline Molded Package (M) Order Number DM74LS138M or DM74LS139M NS Packge Number M16A 16-Lead Molded Dual-In-Line Package (N) Order Number DM74LS138N or DM74LS139N

54LS138/DM54LS138/DM74LS138, 54LS139/DM54LS139/DM74LS139 Decoders/Demultiplexers Physical Dimensions inches (millimeters) (Continued) 16-Lead Ceramic Flat Package (W) Order Number 54LS138FMQB, 54LS139FMQB, DM54LS138W or DM54LS139W 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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