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TC74LVX138FT Dataheets PDF



Part Number TC74LVX138FT
Manufacturers Toshiba Semiconductor
Logo Toshiba Semiconductor
Description 3-to-8 Line Decoder
Datasheet TC74LVX138FT DatasheetTC74LVX138FT Datasheet (PDF)

TC74LVX138F/FT TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74LVX138F, TC74LVX138FT 3-to-8 Line Decoder The TC74LVX138F/ FT is a high-speed CMOS 3-to-8 line decoder fabricated with silicon gate CMOS technology. Designed for use in 3-V systems, it achieves high-speed operation while maintaining the CMOS low power dissipation. This device is suitable for low-voltage and battery operated systems. When the device is enabled, 3 Binary Select inputs (A, B and C) determine which one of.

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TC74LVX138F/FT TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74LVX138F, TC74LVX138FT 3-to-8 Line Decoder The TC74LVX138F/ FT is a high-speed CMOS 3-to-8 line decoder fabricated with silicon gate CMOS technology. Designed for use in 3-V systems, it achieves high-speed operation while maintaining the CMOS low power dissipation. This device is suitable for low-voltage and battery operated systems. 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 5.5V can be applied to the input pins without regard to the supply voltage. This device can be used to interface 5V to 3V systems and two supply systems such as battery back up. This circuit prevents device destruction due to mismatched supply and input voltages. Features • High-speed: tpd = 5.5 ns (typ.) (VCC = 3.3 V) • Low power dissipation: ICC = 4 μA (max) (Ta = 25°C) • Input voltage level: VIL = 0.8 V (max) (VCC = 3 V) VIH = 2.0 V (min) (VCC = 3 V) • Power-down protection provided on all inputs • Balanced propagation delays: tpLH ∼− tpHL • Pin and function compatible with 74HC138 TC74LVX138F TC74LVX138FT Weight SOP16-P-300-1.27A TSSOP16-P-0044-0.65A : 0.18 g (typ.) : 0.06 g (typ.) Start of commercial production 1993-01 1 2014-03-01 Pin Assignment (top view) TC74LVX138F/FT A1 B2 C3 G2A 4 G2B 5 G1 6 Y7 7 GND 8 16 VCC 15 Y0 14 Y1 13 Y2 12 Y3 11 Y4 10 Y5 9 Y6 IEC Logic Symbol (1) A (2) B (3) C (6) G1 (4) G2A (5) G2B Bin/Oct (15) 1 0 Y0 (14) 2 1 Y1 (13) 4 2 Y2 (12) 3 Y3 & (11) 4 Y4 (10) 5 Y5 (9) EN 6 Y6 (7) 7 Y7 (1) A (2) B (3) C (6) G1 (4) G2A (5) G2B Dmux 0 0 G 2 7 & EN (15) 0 Y0 (14) 1 Y1 (13) 2 Y2 (12) 3 Y3 (11) 4 Y4 (10) 5 Y5 (9) 6 Y6 (7) 7 Y7 Truth Table Inputs Enable Select G1 G2A G2B C B A LXXXXX XHXXXX XXHXXX H L L L L L H L L L L H H L L L H L H L L L HH H L L H L L H L L H L H H L L H H L H L L H H H Outputs Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 HHHHHHHH HHHHHHHH HHHHHHHH L HHHHHHH H L HHHHHH HH L HHHHH HHH L HHHH HHHH L HHH HHHHH L HH HHHHHH L H HHHHHHH L X: Don’t care Selected Output None None None Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 2 2014-03-01 System Diagram TC74LVX138F/FT Select inputs 1 A 2 B 3 C Enable inputs 4 G2A 5 G2B 6 G1 15 Y0 14 Y1 13 Y2 12 Y3 11 Y4 10 Y5 9 Y6 7 Y7 Data outputs Absolute Maximum Ratings (Note) Characteristics Symbol Rating Unit Supply voltage range DC input voltage DC output voltage Input diode current Output diode current DC output current DC VCC/ground current Power dissipation Storage temperature VCC VIN VOUT IIK IOK IOUT ICC PD Tstg −0.5 to 7.0 V −0.5 to 7.0 V −0.5 to VCC + 0.5 V −20 mA ±20 mA ±25 mA ±75 mA 180 mW −65 to 150 °C 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 Symbol Rating Unit Supply voltage Input voltage Output voltage Operating temperature Input rise and fall time VCC VIN VOUT Topr dt/dv 2.0 to 3.6 0 to 5.5 0 to VCC −40 to 85 0 to 100 V V V °C ns/V Note: 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 2014-03-01 TC74LVX138F/FT Electrical Characteristics DC Characteristics Characteristics Input voltage H-level L-level H-level Output voltage L-level Input leakage current Quiescent supply current Symbol Test Condition Ta = 25°C Ta = −40 to 85°C Unit VCC (V) Min Typ. Max Min Max 2.0 1.5 ⎯ ⎯ 1.5 ⎯ VIH ⎯ 3.0 2.0 ⎯ ⎯ 2.0 ⎯ 3.6 2.4 ⎯ ⎯ 2.4 ⎯ V 2.0 ⎯ ⎯ 0.5 ⎯ 0.5 VIL ⎯ 3.0 ⎯ ⎯ 0.8 ⎯ 0.8 3.6 ⎯ ⎯ 0.8 ⎯ 0.8 IOH = −50 μA 2.0 1.9 2.0 ⎯ 1.9 ⎯ VOH VIN = VIH or VIL IOH = −50 μA 3.0 2.9 3.0 ⎯ 2.9 ⎯ IOH = −4 mA 3.0 2.58 ⎯ ⎯ 2.48 ⎯ V IOL = 50 μA 2.0 ⎯ 0 0.1 ⎯ 0.1 VOL VIN = VIH or VIL IOL = 50 μA .


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