TC74VHC138F/FN/FT/FK TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74VHC138F,TC74VHC138FN,TC74VHC138FT,TC74VHC138FK 3-to-8 Line Decoder The TC74VHC138 is an advanced high speed CMOS 3-to-8 DECODER fabricated with silicon gate C2MOS technology. It achieves the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation. 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. An input protection circuit ensures that 0 to 5.5 V can be applied to the input pins without regard to the supply voltage. This device can be used to interface 5 V to 3 V systems and two supply systems such as battery back up. This circuit prevents device destruction due to mismatched supply and input voltages. Note: xxxFN (JEDEC SOP) is not available in Japan. TC74VHC138F TC74VHC138FN Features • High speed: tpd = 5.7 ns (typ.) at VCC = 5 V • Low power dissipation: ICC = 4 μA (max) at Ta = 25°C • High noise immunity: VNIH = VNIL = 28% VCC (min) • • Power down protection is provided on all inputs. Balanced propagation delays: tpLH ∼ − tpHL • Wide operating voltage range: VCC (opr) = 2 V to 5.5 V • Pin and function compatible with 74ALS138 TC74VHC138FT TC74VHC138FK Weight SOP16-P-300-1.27A SOL16-P-150-1.27 TSSOP16-P-0044-0.65A VSSOP16-P-0030-0.50 1 : 0.18 g (typ.) : 0.13 g (typ.) : 0.06 g (typ.) : 0.02 g (typ.) 2007-10-01 TC74VHC138F/FN/FT/FK Pin Assignment A 1 16 VCC B 2 15 Y0 C 3 14 Y1 G2A 4 13 Y2 G2B 5 12 Y3 G1 6 11 Y4 Y7 7 10 Y5 GND 8 9 Y6 (top view) IEC Logic Symbol A B C G1 G2A G2B (1) (2) (3) (6) (4) (5) BIN/OCT 1 2 4 (15) (14) 0 1 (13) (12) (11) 2 3 4 & (10) 5 6 EN (9) (7) 7 Y0 Y1 A B Y2 C Y3 Y4 G1 Y5 Y6 Y7 G2A G2B (1) (2) DMUX 0 (3) 0 G 7 2 (13) (12) (11) 2 3 4 & (6) (4) (5) (15) (14) 0 1 (10) 5 6 7 (9) (7) Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 Truth Table Inputs Outputs Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 Selected Output X H H H H H H H H None X X H H H H H H H H None X X H H H H H H H H None L L L L H H H H H H H Y0 L L L H H L H H H H H H Y1 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 Enable Select G1 G2 A G2B C B A L X X X X X H X X X X H X H L L H L H X: Don’t care 2 2007-10-01 TC74VHC138F/FN/FT/FK Logic Diagram 15 A Y0 14 1 Y1 13 Select inputs B Y2 12 2 Y3 11 C Y4 10 3 Y5 9 Y6 7 G2 A Enable inputs G 2B G1 Data outputs Y7 4 5 6 Absolute Maximum Ratings (Note) Characteristics Supply voltage range Symbol Rating Unit VCC −0.5 to 7.0 V VIN −0.5 to 7.0 V DC output voltage VOUT −0.5 to VCC + 0.5 V Input diode current IIK −20 mA Output diode current IOK ±20 mA DC output current IOUT ±25 mA DC VCC/ground current ICC ±75 mA Power dissipation PD 180 mW Storage temperature Tstg −65 to 150 °C DC input voltage Note: 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 conditions (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). Operating Ranges (Note) Characteristics Supply voltage Input voltage Output voltage Operating temperature Input rise and fall time Note: Symbol Rating Unit VCC 2.0 to 5.5 V VIN 0 to 5.5 V VOUT 0 to VCC V −40 to 85 °C Topr dt/dv 0 to 100 (VCC = 3.3 ± 0.3 V) 0 to 20 (VCC = 5 ± 0.5 V) ns/V The operating ranges must be maintained to ensure the normal operation of the device. Unused inputs must be tied to either VCC or GND. 3 2007-10-01 TC74VHC138F/FN/FT/FK Electrical Characteristics DC Characteristics High-level input voltage Low-level input voltage Symbol VIH VIL VCC (V) Min Typ. Max Min Max 2.0 1.50 ⎯ ⎯ 1.50 ⎯ 3.0 to 5.5 VCC × 0.7 ⎯ ⎯ VCC × 0.7 ⎯ 2.0 ⎯ ⎯ 0.50 ⎯ 0.50 3.0 to 5.5 ⎯ ⎯ VCC × 0.3 ⎯ VCC × 0.3 2.0 1.9 2.0 ⎯ 1.9 ⎯ 3.0 2.9 3.0 ⎯ 2.9 ⎯ 4.5 4.4 4.5 ⎯ 4.4 ⎯ IOH = −4 mA 3.0 2.58 ⎯ ⎯ 2.48 ⎯ IOH = −8 mA 4.5 3.94 ⎯ ⎯ 3.80 ⎯ 2.0 ⎯ 0.0 0.1 ⎯ 0.1 3.0 ⎯ 0.0 0.1 ⎯ 0.1 4.5 ⎯ 0.0 0.1 ⎯ 0.1 IOL = 4 mA 3.0 ⎯ ⎯ 0.36 ⎯ 0.44 IOL = 8 mA 4.5 ⎯ ⎯ 0.36 ⎯ 0.44 ⎯ ⎯ IOH = −50 μA High-level output voltage VOH VIN = VIH or VIL IOL = 50 μA Low-level output voltage VOL Ta = −40 to 85°C Ta = 25°C Test Condition Characteristics VIN = VIH or VIL Unit V V V V Input leakage current IIN VIN = 5.5 V or GND 0 to 5.5 ⎯ ⎯ ±0.1 ⎯ ±1.0 μA Quiescent supply current ICC VIN = VCC or GND 5.5 ⎯ ⎯ 4.0 ⎯ 40.0 μA 4 2007-10-01 TC74VHC138F/FN/FT/FK AC Characteristics (input: tr = tf = 3 ns) Characteristics Propagation delay time tpLH (A, B, C- Y ) tpHL Propagation delay time tpLH (G1- Y ) tpHL Propagation delay time tpLH ( G2 - Y ) tpHL Input capacitance CIN Power dissipation capacitance CPD VCC (V) 3.3 ± 0.3 ⎯ 5.0 ± 0.5 3.3 ± 0.3 ⎯ 5.0 ± 0.5 3.3 ± 0.3 ⎯ 5.0 ± 0.5 Ta = −40 to 85°C Ta = 25°C Test Condition Symbol Unit CL (pF) Min Typ. Max Min Max 15 ⎯ 8.2 11.4 1.0 13.5 50 ⎯ 10.0 15.8 1.0 18.0 15 ⎯ 5.7 8.1 1.0 9.5 50 ⎯ 7.2 10.1 1.0 11.5 15 ⎯ 8.1 12.8 1.0 15.0 50 ⎯ 10.6 16.3 1.0 18.5 15 ⎯ 5.6 8.1 1.0 9.5 50 ⎯ 7.1 10.1 1.0 11.5 15 ⎯ 8.2 11.4 1.0 13.5 50 ⎯ 10.7 14.9 1.0 17.0 15 ⎯ 5.8 8.1 1.0 9.5 50 ⎯ 7.3 10.1 1.0 11.5 ⎯ 4 10 ⎯ 10 pF ⎯ 34 ⎯ ⎯ ⎯ pF ⎯ (Note) ns ns ns 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) = CPD·VCC·fIN + ICC Input Equivalent Circuit INPUT 5 2007-10-01 TC74VHC138F/FN/FT/FK Package Dimensions Weight: 0.18 g (typ.) 6 2007-10-01 TC74VHC138F/FN/FT/FK Package Dimensions (Note) Note: This package is not available in Japan. Weight: 0.13 g (typ.) 7 2007-10-01 TC74VHC138F/FN/FT/FK Package Dimensions Weight: 0.06 g (typ.) 8 2007-10-01 TC74VHC138F/FN/FT/FK Package Dimensions Weight: 0.02 g (typ.) 9 2007-10-01 TC74VHC138F/FN/FT/FK RESTRICTIONS ON PRODUCT USE 20070701-EN GENERAL • The information contained herein is subject to change without notice. • TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the “Handling Guide for Semiconductor Devices,” or “TOSHIBA Semiconductor Reliability Handbook” etc. • The TOSHIBA products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.).These TOSHIBA products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury (“Unintended Usage”). Unintended Usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in his document shall be made at the customer’s own risk. • The products described in this document shall not be used or embedded to any downstream products of which manufacture, use and/or sale are prohibited under any applicable laws and regulations. • The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any patents or other rights of TOSHIBA or the third parties. • Please contact your sales representative for product-by-product details in this document regarding RoHS compatibility. Please use these products in this document in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances. Toshiba assumes no liability for damage or losses occurring as a result of noncompliance with applicable laws and regulations. 10 2007-10-01