TC74LCX138F/FT/FK TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74LCX138F, TC74LCX138FT, TC74LCX138FK Low-Voltage 3-to-8 Line Decoder with 5-V Tolerant Inputs and Outputs The TC74LCX138 is a high-performance CMOS 3-to-8 decoder. Designed for use in 3.3-V systems, it achieves high-speed operation while maintaining the CMOS low-power dissipation. The device is designed for low-voltage (3.3 V) VCC applications, but it could be used to interface to 5-V supply environment for inputs. When the device is enabled, 3 binary select inputs (A, B and C) determine which one of the outputs ( Y0 - Y7 ) will go low. When enable input G1 is held low or either G2A or G2B is held high, decoding function is inhibited and all outputs go high. G1, G2A , and G2B inputs are provided to ease cascade connection and for use as an address decoder for memory systems. All inputs are equipped with protection circuits against static discharge. TC74LCX138F TC74LCX138FT Features * Low-voltage operation: VCC = 1.65 to 3.6 V * High-speed operation: tpd = 6.0 ns (max) (VCC = 3.0 to 3.6 V) * Ouput current: |IOH|/IOL = 24 mA (min) (VCC = 3.0 V) * Latch-up performance: 500 mA * Available in JEITA SOP, TSSOP and VSSOP (US) * Power-down protection provided on all inputs and outputs * Pin and function compatible with the 74 series (74AC/VHC/HC/F/ALS/LS etc.) 138 type TC74LCX138FK W Weight SOP16-P-300-1.27A TSSOP16-P-0044-0.65A VSSOP16-P-0030-0.50 : 0.18 g (typ.) : 0.06 g (typ.) : 0.02 g (typ.) Note: The Electrical Characteristics of VCC=1.80.15V is only applicable for products which manufactured from January 2009 onward. Start of commercial production 1994-10 1 2014-03-01 TC74LCX138F/FT/FK Pin Assignment (top view) A 1 16 VCC B 2 15 Y0 C 3 14 Y1 G2A 4 13 Y2 G 2B 5 12 Y3 G1 6 11 Y4 Y7 7 10 Y5 GND 8 9 Y6 IEC Logic Symbol Bin/Oct A B C G1 G2A G2B (1) (2) 0 1 2 1 2 4 (3) (6) 3 4 5 & (4) (5) 6 7 EN (15) (14) (13) (12) (11) (10) (9) (7) Y1 A B Y2 C Y0 Y3 Y4 G1 Y5 G2A Y6 G2B (1) (2) Dmux 0 (3) 0 G 7 2 (6) 0 1 2 3 4 5 & (4) (5) 6 7 Y7 (15) (14) (13) (12) (11) (10) (9) (7) Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 Truth Table Inputs Enable Outputs Select Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 Selected Output G1 G2 A G 2B C B A L X X X X X H H H H H H H H None X H X X X X H H H H H H H H None X X H X X X H H H H H H H H None H L L L L L L H H H H H H H Y0 H L L L L H H L H H H H H H Y1 H L L L H L H H L H H H H H Y2 H L L L H H H H H L H H H H Y3 H L L H L L H H H H L H H H Y4 H L L H L H H H H H H L H H Y5 H L L H H L H H H H H H L H Y6 H L L H H H H H H H H H H L Y7 X: Don't care 2 2014-03-01 TC74LCX138F/FT/FK System Diagram 15 A 14 1 13 Select inputs B 12 2 11 C 10 3 9 7 G2 A Enable inputs G 2B G1 4 Y0 Y1 Y2 Y3 Y4 Data outputs Y5 Y6 Y7 5 6 Absolute Maximum Ratings (Note 1) Characteristics Symbol Rating Unit Power supply voltage VCC -0.5 to 7.0 V DC input voltage VIN -0.5 to 7.0 V -0.5 to 7.0 (Note 2) DC output voltage VOUT Input diode current IIK -50 Output diode current IOK 50 DC output current IOUT 50 mA Power dissipation PD 180 mW ICC/IGND 100 mA Tstg -65 to 150 C DC VCC/ground current Storage temperature -0.5 to VCC + 0.5 (Note 3) V mA (Note 4) mA Note 1: Exceeding any of the absolute maximum ratings, even briefly, lead to deterioration in IC performance or even destruction. Using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the significant change in temperature, etc.) may cause this product to decrease in the reliability significantly even if the operating range (i.e. operating temperature/current/voltage, etc.) are within the absolute maximum ratings and the operating ranges. Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook ("Handling Precautions"/"Derating Concept and Methods") and individual reliability data (i.e. reliability test report and estimated failure rate, etc). Note 2: VCC = 0 V Note 3: High or low state. IOUT absolute maximum rating must be observed. Note 4: VOUT < GND, VOUT > VCC 3 2014-03-01 TC74LCX138F/FT/FK Operating Ranges (Note 1) Characteristics Symbol Power supply voltage VCC Input voltage VIN Output voltage VOUT Output current IOH/IOL Rating Unit 1.65 to 3.6 1.5 to 3.6 (Note 2) 0 to 5.5 V 0 to 5.5 (Note 3) 0 to VCC (Note 4) 24 (Note 5) 12 (Note 6) Operating temperature Topr -40 to 85 Input rise and fall time dt/dv 0 to 10 V V mA C (Note 7) ns/V Note 1: The operating ranges must be maintained to ensure the normal operation of the device. Unused inputs must be tied to either VCC or GND. Note 2: Data retention only Note 3: VCC = 0 V Note 4: High or low state Note 5: VCC = 3.0 to 3.6 V Note 6: VCC = 2.7 to 3.0 V Note 7: VIN = 0.8 to 2.0 V, VCC = 3.0 V 4 2014-03-01 TC74LCX138F/FT/FK Electrical Characteristics DC Characteristics (Ta = -40 to 85C) Characteristics H-level Symbol Test Condition 1.7 2.7 to 3.6 2.0 1.65 to 2.3 VCCx0.1 2.3 to 2.7 0.7 2.7 to 3.6 0.8 1.65 to 3.6 VCC-0.2 IOH = -4 mA 1.65 1.05 IOH = -8 mA 2.3 1.7 IOH = -12 mA 2.7 2.2 IOH = -18 mA 3.0 2.4 IOH = -24 mA 3.0 2.2 IOL = 100 A 1.65 to 3.6 0.2 IOL = 4 mA 1.65 0.45 IOL = 8 mA 2.3 0.7 IOL = 12 mA 2.7 0.4 IOL = 16 mA 3.0 0.4 IOL = 24 mA 3.0 0.55 1.65 to 3.6 5.0 A VIN/VOUT = 5.5 V 0 10.0 A VIN = VCC or GND 1.65 to 3.6 10.0 VIN = 3.6 to 5.5 V 1.65 to 3.6 10.0 VIH = VCC - 0.6 V 2.7 to 3.6 500 VIL VIN = VIH or VIL Output voltage L-level Input leakage current VOL IIN Power-off leakage current IOFF Quiescent supply current ICC Increase in ICC per input ICC Unit 2.3 to 2.7 VIH VOH Max IOH = -100 A H-level Min 1.65 to 2.3 VCCx0.9 Input voltage L-level VCC (V) VIN = VIH or VIL VIN = 0 to 5.5 V 5 V V A 2014-03-01 TC74LCX138F/FT/FK AC Characteristics (Ta = -40 to 85C) Characteristics Propagation delay time (A, B, C- Y ) Symbol tpLH tpHL Propagation delay time tpLH (G1- Y ) tpHL Propagation delay time tpLH ( G2 - Y ) tpHL Output to output skew Note: Test Condition Figure 1, Figure 2 Figure 1, Figure 2 Figure 1, Figure 2 tosLH (Note) tosHL Min Max 1.80.15 25.0 2.50.2 8.0 2.7 7.0 3.3 0.3 1.5 6.0 1.80.15 25.0 2.50.2 9.0 2.7 8.0 3.3 0.3 1.5 7.0 1.80.15 25.0 2.50.2 8.0 2.7 7.0 3.3 0.3 1.5 6.0 2.7 3.3 0.3 1.0 VCC (V) Unit ns ns ns ns Parameter guaranteed by design. (tosLH = |tpLHm - tpLHn|, tosHL = |tpHLm - tpHLn|) Dynamic Switching Characteristics (Ta = 25C, input: tr = tf = 2.5 ns, CL = 50 pF, RL = 500 ) Characteristics Symbol Test Condition VCC (V) Typ. Unit Quiet output maximum dynamic VOL VOLP VIH = 3.3 V, VIL = 0 V 3.3 0.8 V Quiet output minimum dynamic VOL |VOLV| VIH = 3.3 V, VIL = 0 V 3.3 0.8 V Typ. Unit Capacitive Characteristics (Ta = 25C) Characteristics Input capacitance Output capacitance Power dissipation capacitance Note: Symbol Test Condition CIN 3.3 7 pF COUT 0 8 pF 3.3 25 pF CPD fIN = 10 MHz VCC (V) (Note) CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load. Average operating current can be obtained by the equation: ICC (opr) = CPDVCCfIN + ICC 6 2014-03-01 TC74LCX138F/FT/FK AC Test Circuit Output RL CL Measure Figure 1 AC Waveform tf tr VIH 90% VIM 10% Input GND VOH VOM Output tpLH tpHL VOL Figure 2 tpLH, tpHL VCC Symbol 3.3 0.3 V 2.7V Input 2.5 0.2 V 1.8 0.15 V VIH 2.7V VCC VCC VIM 1.5V VCC/2 VCC/2 tr, tf 2.5ns 2.0ns 2.0ns Output VOM 1.5V VOH/2 VOH/2 Load CL 50pF 30pF 30pF RL 500 500 1k 7 2014-03-01 TC74LCX138F/FT/FK Package Dimensions Weight: 0.18 g (typ.) 8 2014-03-01 TC74LCX138F/FT/FK Package Dimensions Weight: 0.06 g (typ.) 9 2014-03-01 TC74LCX138F/FT/FK Package Dimensions Weight: 0.02 g (typ.) 10 2014-03-01 TC74LCX138F/FT/FK RESTRICTIONS ON PRODUCT USE * Toshiba Corporation, and its subsidiaries and affiliates (collectively "TOSHIBA"), reserve the right to make changes to the information in this document, and related hardware, software and systems (collectively "Product") without notice. * This document and any information herein may not be reproduced without prior written permission from TOSHIBA. Even with TOSHIBA's written permission, reproduction is permissible only if reproduction is without alteration/omission. * Though TOSHIBA works continually to improve Product's quality and reliability, Product can malfunction or fail. Customers are responsible for complying with safety standards and for providing adequate designs and safeguards for their hardware, software and systems which minimize risk and avoid situations in which a malfunction or failure of Product could cause loss of human life, bodily injury or damage to property, including data loss or corruption. Before customers use the Product, create designs including the Product, or incorporate the Product into their own applications, customers must also refer to and comply with (a) the latest versions of all relevant TOSHIBA information, including without limitation, this document, the specifications, the data sheets and application notes for Product and the precautions and conditions set forth in the "TOSHIBA Semiconductor Reliability Handbook" and (b) the instructions for the application with which the Product will be used with or for. Customers are solely responsible for all aspects of their own product design or applications, including but not limited to (a) determining the appropriateness of the use of this Product in such design or applications; (b) evaluating and determining the applicability of any information contained in this document, or in charts, diagrams, programs, algorithms, sample application circuits, or any other referenced documents; and (c) validating all operating parameters for such designs and applications. TOSHIBA ASSUMES NO LIABILITY FOR CUSTOMERS' PRODUCT DESIGN OR APPLICATIONS. * PRODUCT IS NEITHER INTENDED NOR WARRANTED FOR USE IN EQUIPMENTS OR SYSTEMS THAT REQUIRE EXTRAORDINARILY HIGH LEVELS OF QUALITY AND/OR RELIABILITY, AND/OR A MALFUNCTION OR FAILURE OF WHICH MAY CAUSE LOSS OF HUMAN LIFE, BODILY INJURY, SERIOUS PROPERTY DAMAGE AND/OR SERIOUS PUBLIC IMPACT ("UNINTENDED USE"). Except for specific applications as expressly stated in this document, Unintended Use includes, without limitation, equipment used in nuclear facilities, equipment used in the aerospace industry, medical equipment, equipment used for automobiles, trains, ships and other transportation, traffic signaling equipment, equipment used to control combustions or explosions, safety devices, elevators and escalators, devices related to electric power, and equipment used in finance-related fields. IF YOU USE PRODUCT FOR UNINTENDED USE, TOSHIBA ASSUMES NO LIABILITY FOR PRODUCT. For details, please contact your TOSHIBA sales representative. * Do not disassemble, analyze, reverse-engineer, alter, modify, translate or copy Product, whether in whole or in part. * Product shall not be used for or incorporated into any products or systems whose manufacture, use, or sale is prohibited under any applicable laws or regulations. * The information contained herein is presented only as guidance for Product use. No responsibility is assumed by TOSHIBA for any infringement of patents or any other intellectual property rights of third parties that may result from the use of Product. No license to any intellectual property right is granted by this document, whether express or implied, by estoppel or otherwise. * ABSENT A WRITTEN SIGNED AGREEMENT, EXCEPT AS PROVIDED IN THE RELEVANT TERMS AND CONDITIONS OF SALE FOR PRODUCT, AND TO THE MAXIMUM EXTENT ALLOWABLE BY LAW, TOSHIBA (1) ASSUMES NO LIABILITY WHATSOEVER, INCLUDING WITHOUT LIMITATION, INDIRECT, CONSEQUENTIAL, SPECIAL, OR INCIDENTAL DAMAGES OR LOSS, INCLUDING WITHOUT LIMITATION, LOSS OF PROFITS, LOSS OF OPPORTUNITIES, BUSINESS INTERRUPTION AND LOSS OF DATA, AND (2) DISCLAIMS ANY AND ALL EXPRESS OR IMPLIED WARRANTIES AND CONDITIONS RELATED TO SALE, USE OF PRODUCT, OR INFORMATION, INCLUDING WARRANTIES OR CONDITIONS OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, ACCURACY OF INFORMATION, OR NONINFRINGEMENT. * Do not use or otherwise make available Product or related software or technology for any military purposes, including without limitation, for the design, development, use, stockpiling or manufacturing of nuclear, chemical, or biological weapons or missile technology products (mass destruction weapons). Product and related software and technology may be controlled under the applicable export laws and regulations including, without limitation, the Japanese Foreign Exchange and Foreign Trade Law and the U.S. Export Administration Regulations. Export and re-export of Product or related software or technology are strictly prohibited except in compliance with all applicable export laws and regulations. * Please contact your TOSHIBA sales representative for details as to environmental matters such as the RoHS compatibility of Product. Please use Product in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances, including without limitation, the EU RoHS Directive. TOSHIBA ASSUMES NO LIABILITY FOR DAMAGES OR LOSSES OCCURRING AS A RESULT OF NONCOMPLIANCE WITH APPLICABLE LAWS AND REGULATIONS. 11 2014-03-01