MM54HCT253/MM74HCT253 Dual 4-Channel TRI-STATEÉ Multiplexer General Description The MM54HCT253/MM74HCT253 utilizes advanced silicon-gate CMOS technology to achieve the low power consumption of standard CMOS integrated circuits, along with the capability to drive 10 LS-TTL loads. The large output drive and TRI-STATE features of this device make it ideally suited for interfacing with bus lines in bus organized systems. When the output control input is taken high, the multiplexer outputs are sent into a high impedance state. When the output control is held low, the associated multiplexer chooses the correct output channel for the given input signals determined by the select A and B inputs. The 54HC/74HC logic family is functionally and pinout compatible with the standard 54LS/74LS logic family. All inputs are protected from damage due to static discharge by internal diode clamps to VCC and ground. Features Y Y Y Y Y Typical propagation delay: 24 ns Low quiescent current: 80 mA maximum (74HCT Series) Low input current: 1 mA maximum Fanout of 10 LS-TTL loads TTL input compatible Connection Diagram Dual-In-Line Package TL/F/8434 – 1 Top View Order Number MM54HCT253 or MM74HCT253 Truth Table Select Inputs Data Inputs Output Control Output B A C0 C1 C2 C3 G Y X L L L L H H H H X L L H H L L H H X L H X X X X X X X X X L H X X X X X X X X X L H X X X X X X X X X L H H L L L L L L L L Z L H L H L H L H Select inputs A and B are common to both sections. H e high level, L e low level, X e irrelevant, Z e high impedance (off). TRI-STATEÉ is a registered trademark of National Semiconductor Corp. C1995 National Semiconductor Corporation TL/F/8434 RRD-B30M105/Printed in U. S. A. MM54HCT253/MM74HCT253 Dual 4-Channel TRI-STATE Multiplexer 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 or Output Voltage (VIN, VOUT) Operating Temp. Range (TA) MM74HCT MM54HCT Input Rise or Fall Times (tr, tf) b 0.5 to a 7.0V b 1.5 to VCC a 1.5V DC Input Voltage (VIN) b 0.5 to VCC a 0.5V DC Output Voltage (VOUT) g 20 mA Clamp Diode Current (IIK, IOK) g 35 mA DC Output Current, per pin (IOUT) g 70 mA DC VCC or GND Current, per pin (ICC) b 65§ C to a 150§ C Storage Temperature Range (TSTG) Power Dissipation (PD) (Note 3) 600 mW S.O. Package only 500 mW Lead Temp. (TL) (Soldering 10 seconds) 260§ C Min 4.5 0 Max 5.5 VCC Units V V b 40 b 55 a 85 a 125 §C §C 500 ns DC Electrical Characteristics VCC e 5V g 10% (unless otherwise specified) Symbol Parameter Conditions TA e 25§ C 74HCT 54HCT TA e b40§ C to 85§ C TA e b55§ C to 125§ C Units Typ Guaranteed Limits VIH Minimum High Level Input Voltage 2.0 2.0 2.0 V VIL Maximum Low Level Input Voltage 0.8 0.8 0.8 V VOH Minimum High Level Output Voltage VIN e VIH or VIL VCC VCCb0.1 lIOUTl e 20 mA lIOUTl e 4.0 mA, VCC e 4.5V 4.2 3.98 lIOUTl e 4.8 mA, VCC e 5.5V 5.7 4.98 VCCb0.1 3.84 4.84 VCCb0.1 3.7 4.7 V V V Maximum Low Level Voltage VIN e VIH or VIL 0 lIOUTl e 20 mA lIOUTl e 4.0 mA, VCC e 4.5V 0.2 lIOUTl e 4.8 mA, VCC e 5.5V 0.2 0.1 0.26 0.26 0.1 0.33 0.33 0.1 0.4 0.4 V V V IIN Maximum Input Current VIN e VCC or GND, VIH or VIL g 0.1 g 1.0 g 1.0 mA IOZ Maximum TRI-STATE VOUT e VCC or GND Output Leakage Enable e VIH or VIL Current g 0.5 g 5.0 g 10 mA ICC Maximum Quiescent Supply Current VIN e VCC or GND IOUT e 0 mA 8.0 80 160 mA VIN e 2.4V or 0.5V (Note 4) 0.6 0.8 1.0 mA VOL 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 deratingÐplastic ‘‘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 pin. All others tied to VCC or ground. 2 AC Electrical Characteristics VCC e 5V, TA e 25§ C, tr e tf e 6 ns, CL e 15 pF Typ Units tPHL, tPLH Symbol Maximum Propagation Delay, Select A or B to Y Parameter Conditions 23 ns tPHL, tPLH Maximum Propagation Delay, any Data to Y 20 ns tPZH, tPZL Maximum Output Enable Time Y Output to a Logic Level RL e 1k 15 ns tPHZ, tPLZ Maximum Output Disable Time Y Output to High Impedance State RL e 1k 11 ns AC Electrical Characteristics CL e 50 pF, tr e tf e 6 ns (unless otherwise specified) Symbol Parameter Conditions TA e 25§ C Min Typ Max 74HC TA e b40§ C to 85§ C Min Max 54HC TA e 55§ C to 125§ C Min Units Max tPHL, tPLH Maximum Propagation Delay, Select A or B to Y 26 40 50 60 ns tPHL, tPLH Maximum Propagation Delay, and Data to Y 24 35 44 53 ns tPZH, tPZL Maximum Output Enable Time RL e 1 kX 19 26 33 39 ns tPHZ, tPLZ Maximum Output Disable Time RL e 1 kX 13 20 25 30 ns tTHL, tTLH Maximum Output Rise and Fall Time 8 15 19 22 ns CIN Maximum Input Capacitance 5 10 10 10 pF CPD Power Dissipation Capacitance (Note 5) (per package) Output Enabled Outputs Disabled 90 25 pF 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. Logic Diagram TL/F/8434 – 2 3 MM54HCT253/MM74HCT253 Dual 4-Channel TRI-STATE Multiplexer Physical Dimensions inches (millimeters) Order Number MM54HCT253J or MM74HCT253J NS Package Number J16A Order Number MM74HCT253N NS Package Number 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. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. National Semiconductor Corporation 1111 West Bardin Road Arlington, TX 76017 Tel: 1(800) 272-9959 Fax: 1(800) 737-7018 2. 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