MM54HCT139/MM74HCT139 Dual 2-To-4 Line Decoder General Description The MM54HCT139/MM74HCT139 is a high speed silicongate CMOS decoder that is well suited to memory address decoding or data routing applications. It possesses an input threshold and output drive similar to LS-TTL and the low standby power of CMOS logic. The device is comprised of two independent one-of-four decoders each with a single active low enable input (G1 or G2). Data on the select inputs (A1, B1 or A2, B2) cause one of the four normally high outputs to go low. All inputs to the decoder are protected from damage due to electrostatic discharge by diodes to VCC and ground. The device is capable of driving 10 low power Schottky TTL equivalent loads. The MM54HCT139/MM74HCT139 is functionally and pin equivalent to the 54LS139/74LS139 and can be used as a plug-in replacement to reduce system power consumption in existing systems. Connection Diagram Truth Table Features Y Y Y Typical propagation delays: 20 ns Low quiescent current: 40 mA maximum (74HCT Series) Fanout of 10 LS-TTL loads ’HCT139 Dual-In-Line Package Inputs Enable Outputs Select G B A Y0 Y1 Y2 Y3 H L L L L X L L H H X L H L H H L H H H H H L H H H H H L H H H H H L H e high level, L e low level, X e don’t care TL/F/5363 – 1 Top View Order Number MM54HCT139 or MM74HCT139 Logic Diagram MM54HCT139/MM74HCT139 TL/F/5363 – 2 (1 of 2 Gates) C1995 National Semiconductor Corporation TL/F/5363 RRD-B30M105/Printed in U. S. A. MM54HCT139/MM74HCT139 Dual 2-To-4 Line Decoder January 1988 Absolute Maximum Ratings (Notes 1 & 2) Operating Conditions If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/Distributors for availability and specifications. Supply Voltage (VCC) Supply Voltage (VCC) DC Input Voltage (VIN) DC Output Voltage (VOUT) Clamp Diode Current (IIK, IOK) DC Output Current, per Pin (IOUT) DC VCC or GND Current, per Pin (ICC) Storage Temperature Range (TSTG) Power Dissipation (PD) (Note 3) S.O. Package only Lead Temp. (TL) (Soldering 10 seconds) DC Input or Output Voltage (VIN, VOUT) b 0.5 to a 7.0V b 1.5 to VCC a 1.5V Operating Temp. Range (TA) MM74HCT MM54HCT b 0.5 to VCC a 0.5V 20 mA 25 mA 50 mA b 65§ C to a 150§ C Min 4.5 Max 5.5 0 VCC Units V V b 40 b 55 a 85 a 125 C C 500 ns Input Rise/Fall Time (tr, tf) 600 mW 500 mW 300§ C DC Electrical Characteristics (Note 4) Typ Symbol VIH Parameter Conditions Maximum Low Level Input Voltage VOH Minimum High Level VIN e VIH or VIL Output Voltage lIOUTl e 20 mA lIOUTl e 4.0 mA, VCC e 4.5V lIOUTl e 4.8 mA, VCC e 5.5V VOL VCC T e 25 C T e 25 C § § Minimum High Level Input Voltage VIL VCC Maximum Low Level VIN e VIH or VIL Output Voltage lIOUTl e 20 mA lIOUTl e 4.0 mA, VCC e 4.5V lIOUTl e 4.8 mA, VCC e 5.5V IIN Maximum Input Current ICC Maximum Quiescent VIN e VCC or GND Supply Current IOUT e 0 mA (Note 4) Guaranteed Limits VIN e VCC or GND VIN e VIH or VIL VIN e 2.4V or 0.5V IOUT e 0 mA (Note 4) 74HCT 54HCT Units T eb40 to 85§ C T eb55 to 125§ C V V 2.0 2.0 2.0 0.8 0.8 0.8 V V VCCb.1 3.98 4.98 VCCb.1 3.84 4.84 VCCb.1 3.7 4.7 V V V 0.10 0.26 0.26 0.10 0.33 0.33 0.1 0.4 0.4 V V V g 0.1 g 1.0 g 1.0 mA 4 40 80 mA 0.3 0.4 0.5 mA Note 1: Absolute Maximum Ratings are those values beyond which damage to the device may occur. Note 2: Unless otherwise specified all voltages are referenced to ground. Note 3: Power Dissipation temperature derating: plastic ‘‘N’’ package: b 12 mW/§ C from 65§ C to 85§ C; ceramic ‘‘J’’ package: b 12 mW/§ C from 100§ C to 125§ C. Note 4: Measured per input, other inputs at VCC or GND. 2 AC Electrical Characteristics (VCC, temperature and loading of LS-TTL) VCC e 5V, TA e 25§ C, CL e 15 pF, tr e tf e 6 ns Typ Guaranteed Limits Units Maximum Propagation Delay, Binary Select to any Output 18 30 ns Maximum Propagation Delay, Enable to any Output 18 30 ns Symbol Parameter tPLH, tPHL tPLH, tPHL Conditions AC Electrical Characteristics (Full range of VCC and temperature) VCC e 5V g 10%, CL e 50 pF (unless otherwise specified) Typ Guaranteed Limits TA e 25§ C TA e 25§ C 74HCT TA eb40 to 85§ C 54HCT TA eb55 to 125§ C Units Maximum Propagation Delay, Binary Select to any Output 20 35 44 51 ns tPLH, tPHL Maximum Propagation Delay, Enable to any Output 21 35 44 51 ns tTLH, tTHL Maximum Output Rise and Fall Time 9 15 19 22 ns CPD Power Dissipation Capacitance CIN Minimum Input Capacitance Symbol Parameter tPLH, tPHL Conditions Note 5 36 pF 5 10 10 10 pF Note 5: CPD determines the no load dynamic power consumption, PD e (CPD VCC 2) f a ICC VCC, and the no load dynamic current consumption, IS e CPD VCC f a ICC. 3 MM54HCT139/MM74HCT139 Dual 2-To-4 Line Decoder Physical Dimensions inches (millimeters) Order Number MM54HCT139J or MM74HCT139J NS Package J16A Order Number MM74HCT139N NS Package N16E 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. 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