MC74LCX138 Low Voltage CMOS 3 to 8 Decoder/Demultiplexer With 5 V Tolerant Inputs The MC74LCX138 is a high performance, 3 to 8 decoder/demultiplexer o

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Low Voltage CMOS 3 to 8 Decoder/Demultiplexer With 5 V Tolerant Inputs The is a high performance, 3 to 8 decoder/demultiplexer operating from a 2.3 to 3.6 V supply.

1 Low Voltage CMOS 3 to 8 Decoder/Demultiplexer With 5 V Tolerant Inputs The is a high performance, 3 to 8 decoder/demultiplexer operating from a 2.3 to 3.6 V supply. High impedance TTL compatible inputs significantly reduce current loading to input drivers while TTL compatible outputs offer improved switching noise performance. A V I specification of 5.5 V allows inputs to be safely driven from 5 V devices. The is suitable for memory address decoding and other TTL level bus oriented applications. The high speed 3 to 8 decoder/demultiplexer accepts three binary weighted inputs (A0, A, A2) and, when enabled, provides eight mutually exclusive active LOW outputs (O0 O7). The LCX38 features three nable inputs, two active LOW (, 2) and one active HIGH (3). All outputs will be HIGH unless and 2 are LOW, and 3 is HIGH. This multiple enabled function allows easy parallel expansion of the device to a of 32 (5 lines to 32 lines) decoder with just four LCX38 devices and one inverter (see Figure ). The LCX38 can be used as an 8 output demultiplexer by using one of the active LOW nable inputs as the data input and the other nable inputs as strobes. The nable inputs which are not used must be permanently tied to their appropriate active HIGH or active LOW state. Current drive capability is 24 ma at the outputs. Features Designed for 2.3 V to 3.6 V V CC Operation 5 V Tolerant Inputs Interface Capability With 5 V TTL Logic LVTTL Compatible LVCMOS Compatible 24 ma Balanced Output Sink and Source Capability Near Zero Static Supply Current (0 A) Substantially Reduces System Power Requirements Latchup Performance xceeds 500 ma SD Performance: Human Body Model >2000 V Machine Model >200 V Pb Free Packages are Available* SOIC D SUFFIX CAS 75B TSSOP DT SUFFIX CAS 948F SOIAJ M SUFFIX CAS 966 MARKING DIAGRAMS LCX38 AWLYWW LCX 38 ALYW 74LCX38 ALYW A = Assembly Location L, WL = Wafer Lot Y = Year W, WW = Work Week ORDRING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 3 of this data sheet. *For additional information on our Pb Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDRRM/D. m/on/ Semiconductor Components Industries, LLC, 2005 Publication Order Number: January, 2005 Rev. 5 /D

2 A2 A A V CC O0 O O2 O3 O4 O O A0 A A2 2 3 O7 8 GND Figure. Pinout: Lead (Top View) O7 O6 O50 O4 O3 O2 O4 O05 PIN NAMS Pins A0 A2 2 3 O0 O7 Function Address Inputs nable Inputs nable Input Outputs Figure 2. Logic Diagram TRUTH TABL Inputs Outputs 2 3 A0 A A2 O0 O O2 O3 O4 O5 O6 O7 H X X X X X H H H H H H H H X H X X X X H H H H H H H H X X L X X X H H H H H H H H L L H L L L L H H H H H H H L L H H L L H L H H H H H H L L H L H L H H L H H H H H L L H H H L H H H L H H H H L L H L L H H H H H L H H H L L H H L H H H H H H L H H L L H L H H H H H H H H L H L L H H H H H H H H H H H L H = High Voltage Level L = Low Voltage Level X = High or Low Voltage Level and Transitions are Acceptable For I CC reasons, DO NOT FLOAT Inputs m/on/ 2

3 A0 A A2 04 A3 A4 H A0 A A2 A0 A A2 A0 A A2 A0 A A2 O0 O O2 O3 O4 O5 O6 O7 O0 O O2 O3 O4 O5 O6 O7 O0 O O2 O3 O4 O5 O6 O7 O0 O O2 O3 O4 O5 O6 O7 O0 Figure 3. xpansion to of 32 Decoding O3 ORDRING INFORMATION Device Package Shipping DR2 SOIC 2500 Tape & Reel DR2G SOIC (Pb Free) 2500 Tape & Reel DT TSSOP * 96 Units / Rail DTR2 TSSOP * 2500 Tape & Reel ML SOIAJ 2000 Tape & Reel For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD80/D. *This package is inherently Pb Free. MAXIMUM RATINGS Symbol Parameter Value Condition Unit V CC DC Supply Voltage 0.5 to +7.0 V V I DC Input Voltage 0.5 V I +7.0 V V O DC Output Voltage 0.5 V O V CC Output in HIGH or LOW State (Note ) V I IK DC Input Diode Current 50 V I < GND ma I OK DC Output Diode Current 50 V O < GND ma +50 V O > V CC ma I O DC Output Source/Sink Current ±50 ma I CC DC Supply Current Per Supply Pin ±00 ma I GND DC Ground Current Per Ground Pin ±00 ma T STG Storage Temperature Range 65 to +50 C Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied, damage may occur and reliability may be affected.. I O absolute maximum rating must be observed. m/on/ 3

4 RCOMMNDD OPRATING CONDITIONS Symbol Parameter Min Typ Max Unit V CC Supply Voltage Operating Data Retention Only , V.5 2.5, V I Input Voltage V V O Output Voltage (HIGH or LOW State) (3 State) 0 V CC V I OH HIGH Level Output Current V CC = 3.0 V 3.6 V V CC = 2.7 V 3.0 V V CC = 2.3 V 2.7 V I OL LOW Level Output Voltage V CC = 3.0 V 3.6 V V CC = 2.7 V 3.0 V V CC = 2.3 V 2.7 V T A Operating Free Air Temperature C t/ V Input Transition Rise or Fall Rate, V IN from 0.8 V to 2.0 V, V CC = 3.0 V 0 0 ns/v DC LCTRICAL CHARACTRISTICS T A = 40 C to +85 C Symbol Characteristic Condition Min Max Unit V IH HIGH Level Input Voltage (Note 2) 2.3 V V CC 2.7 V.7 V 2.7 V V CC 3.6 V 2.0 V IL LOW Level Input Voltage (Note 2) 2.3 V V CC 2.7 V 0.7 V 2.7 V V CC 3.6 V 0.8 V OH HIGH Level Output Voltage 2.3 V V CC 3.6 V; I OH = 00 A V CC 0.2 V V CC = 2.3 V; I OH = 8 ma.8 V CC = 2.7 V; I OH = 2 ma 2.2 V CC = 3.0 V; I OH = 8 ma 2.4 V OL V CC = 3.0 V; I OH = 24 ma 2.2 LOW Level Output Voltage 2.3 V V CC 3.6 V; I OL = 00 A 0.2 V V CC = 2.3 V; I OL = 8 ma 0.6 V CC = 2.7 V; I OL = 2 ma 0.4 V CC = 3.0 V; I OL = ma 0.4 V CC = 3.0 V; I OL = 24 ma 0.55 I I Input Leakage Current 2.3 V V CC 3.6 V; 0 V V I 5.5 V ±5 A I CC Quiescent Supply Current 2.3 V CC 3.6 V; V I = GND or V CC 0 A 2.3 V CC 3.6 V; 3.6 V I or V O 5.5 V ±0 I CC Increase in I CC per Input 2.3 V CC 3.6 V; V IH = V CC 0.6 V 500 A 2. These values of V I are used to test DC electrical characteristics only. AC CHARACTRISTICS t R = t F = 2.5 ns; R L = 500 Limits T A = 40 C to +85 C V CC = 3.3 V ± 0.3 V V CC = 2.7 V V CC = 2.5 V ± 0.2 V C L = 50 pf C L = 50 pf C L = 30 pf Symbol Parameter Waveform Min Max Min Max Min Max Unit Propagation Delay An to On, ns t OSHL t OSLH Propagation Delay, 2 to On Propagation Delay 3 to On Output to Output Skew (Note 3) Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device. The specification applies to any outputs switching in the same direction, either HIGH to LOW (t OSHL ) or LOW to HIGH (t OSLH ); parameter guaranteed by design. m/on/ ma ma ns ns ns

5 CAPACITIV CHARACTRISTICS Symbol Parameter Condition Typical Unit C IN Input Capacitance V CC = 3.3 V, V I = 0 V or V CC 7 pf C OUT Output Capacitance V CC = 3.3 V, V I = 0 V or V CC 8 pf C PD Power Dissipation Capacitance 0 MHz, V CC = 3.3 V, V I = 0 V or V CC 25 pf V CC An, 3 Vmi Vmi 0 V V OH On Vmo Vmo V OL WAVFORM : PROPAGATION DLAYS FOR INVRTING OUTPUTS 2.7 V An,, 2 Vmi Vmi 0 V V OH On Vmo Vmo V OL WAVFORM 2: PROPAGATION DLAYS FOR NON INVRTING OUTPUTS Vcc Symbol 3.3 V V 2.7 V 2.5 V V Vmi.5 V.5 V Vcc/2 Vmo.5 V.5 V Vcc/2 Figure 4. AC Waveforms V CC PULS GNRATOR DUT R T C L R L C L = 50 pf at V CC = V or equivalent (includes jig and probe capacitance) C L = 30 pf at V CC = V or equivalent (includes jig and probe capacitance) R L = R = 500 or equivalent R T = Z OUT of pulse generator (typically 50 ) Figure 5. Test Circuit m/on/ 5

6 PACKAG DIMNSIONS SOIC D SUFFIX CAS 75B 05 ISSU J A 9 8 B P 8 PL 0.25 (0.00) M B S NOTS:. DIMNSIONING AND TOLRANCING PR ANSI Y4.5M, CONTROLLING DIMNSION: MILLIMTR. 3. DIMNSIONS A AND B DO NOT INCLUD MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.5 (0.006) PR SID. 5. DIMNSION D DOS NOT INCLUD DAMBAR PROTRUSION. ALLOWABL DAMBAR PROTRUSION SHALL B 0.27 (0.005) TOTAL IN XCSS OF TH D DIMNSION AT MAXIMUM MATRIAL CONDITION. T SATING PLAN G K C D PL 0.25 (0.00) M T B S A S M R X 45 J F MILLIMTRS INCHS DIM MIN MAX MIN MAX A B C D F G.27 BSC BSC J K M P R TSSOP SUFFIX CAS 948F 0 ISSU O 0.5 (0.006) T 0.5 (0.006) T L U PIN IDNT. U S S 2X L/2 C X K RF 0.0 (0.004) M T U S V S 9 B U J 8 N A V N J F DTAIL K K ÇÇ ÉÉ SCTION N N 0.25 (0.00) M W NOTS:. DIMNSIONING AND TOLRANCING PR ANSI Y4.5M, CONTROLLING DIMNSION: MILLIMTR. 3. DIMNSION A DOS NOT INCLUD MOLD FLASH. PROTRUSIONS OR GAT BURRS. MOLD FLASH OR GAT BURRS SHALL NOT XCD 0.5 (0.006) PR SID. 4. DIMNSION B DOS NOT INCLUD INTRLAD FLASH OR PROTRUSION. INTRLAD FLASH OR PROTRUSION SHALL NOT XCD 0.25 (0.00) PR SID. 5. DIMNSION K DOS NOT INCLUD DAMBAR PROTRUSION. ALLOWABL DAMBAR PROTRUSION SHALL B 0.08 (0.003) TOTAL IN XCSS OF TH K DIMNSION AT MAXIMUM MATRIAL CONDITION. 6. TRMINAL NUMBRS AR SHOWN FOR RFRNC ONLY. 7. DIMNSION A AND B AR TO B DTRMIND AT DATUM PLAN W. MILLIMTRS INCHS DIM MIN MAX MIN MAX A B C D F G 0.65 BSC BSC H J J K K L 6.40 BSC BSC M (0.004) T SATING PLAN D G H DTAIL m/on/ 6

7 PACKAG DIMNSIONS SOIAJ M SUFFIX CAS ISSU O e 9 Z b D A H A 0.3 (0.005) M 0.0 (0.004) 8 VIW P M L Q L DTAIL P c NOTS:. DIMNSIONING AND TOLRANCING PR ANSI Y4.5M, CONTROLLING DIMNSION: MILLIMTR. 3. DIMNSIONS D AND DO NOT INCLUD MOLD FLASH OR PROTRUSIONS AND AR MASURD AT TH PARTING LIN. MOLD FLASH OR PROTRUSIONS SHALL NOT XCD 0.5 (0.006) PR SID. 4. TRMINAL NUMBRS AR SHOWN FOR RFRNC ONLY. 5. TH LAD WIDTH DIMNSION (b) DOS NOT INCLUD DAMBAR PROTRUSION. ALLOWABL DAMBAR PROTRUSION SHALL B 0.08 (0.003) TOTAL IN XCSS OF TH LAD WIDTH DIMNSION AT MAXIMUM MATRIAL CONDITION. DAMBAR CANNOT B LOCATD ON TH LOWR RADIUS OR TH FOOT. MINIMUM SPAC BTWN PROTRUSIONS AND ADJACNT LAD TO B 0.46 ( 0.08). MILLIMTRS INCHS DIM MIN MAX MIN MAX A A b c D e.27 BSC BSC H L L M Q Z m/on/ 7

8 ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. Typical parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including Typicals must be validated for each customer application by customer s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an qual Opportunity/Affirmative Action mployer. This literature is subject to all applicable copyright laws and is not for resale in any manner. PUBLICATION ORDRING INFORMATION LITRATUR FULFILLMNT: Literature Distribution Center for ON Semiconductor P.O. Box 632, Phoenix, Arizona USA Phone: or Toll Free USA/Canada Fax: or Toll Free USA/Canada mail: orderlit@onsemi.com N. American Technical Support: Toll Free USA/Canada Japan: ON Semiconductor, Japan Customer Focus Center 2 9 Kamimeguro, Meguro ku, Tokyo, Japan Phone: ON Semiconductor Website: Order Literature: For additional information, please contact your m/on/ local Sales Representative. /D 8

MC74LCX138MEL. With 5 V Tolerant Inputs

MC74LCX138MEL. With 5 V Tolerant Inputs With 5 V Tolerant Inputs The MC74LCX38 is a high performance, 3 to 8 decoder/demultiplexer operating from a 2.3 to 3.6 V supply. High impedance TTL compatible inputs significantly reduce current loading