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TC74VHCT138AFK Dataheets PDF



Part Number TC74VHCT138AFK
Manufacturers Toshiba
Logo Toshiba
Description 3-to-8 Line Decoder
Datasheet TC74VHCT138AFK DatasheetTC74VHCT138AFK Datasheet (PDF)

TC74VHCT138AF/AFK TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74VHCT138AF, TC74VHCT138AFK 3-to-8 Line Decoder TC74VHCT138AF The TC74VHCT138 is an advanced high speed CMOS 3-to-8 LINE 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 to Y7 ) .

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TC74VHCT138AF/AFK TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74VHCT138AF, TC74VHCT138AFK 3-to-8 Line Decoder TC74VHCT138AF The TC74VHCT138 is an advanced high speed CMOS 3-to-8 LINE 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 to 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. The input voltage are compatible with TTL output voltage. This device may be used as a level converter for interfacing 3.3 V to 5 V system. Input protection and output circuit ensure that 0 to 5.5 V can be applied to the input and output (Note) pins without regard to the supply voltage. These structure prevents device destruction due to mismatched supply and input/output voltages such as battery back up, hot board insertion, etc. Note: VCC = 0 V Features TC74VHCT138AFK Weight SOP16-P-300-1.27A VSSOP16-P-0030-0.50  High speed: tpd = 7.6 ns (typ.) at VCC = 5 V  Low power dissipation: ICC = 4 μA (max) at Ta = 25°C  Compatible with TTL inputs: VIL = 0.8 V (max) VIH = 2.0 V (min)  Power down protection is provided on all inputs and outputs  Balanced propagation delays: tpLH ≈ tpHL  Pin and function compatible with the 74 series (74AC/HC/F/ALS/LS etc.) 138 type. : 0.18 g (typ.) : 0.02 g (typ.) © 2019 1 Toshiba Electronic Devices & Storage Corporation Start of commercial production 1995-12 2019-01-31 Pin Assignment TC74VHCT138AF/AFK A1 B2 C3 4 5 G1 6 7 GND 8 (top view) 16 VCC 15 14 13 12 11 10 9 IEC Logic Symbol A (1) BIN/OCT 1 0 (15) B (2) 2 1 (14) C (3) 4 2 (13) 3 (12) G1 (6) & 4 (11) 5 (10) (4) EN 6 (9) (5) 7 (7) A (1) DMUX 0 0 (15) B (2) 1 (14) C (3) 2 2 (13) 3 (12) G1 (6) & 4 (11) 5 (10) (4) 6 (9) (5) 7 (7) Truth Table Inputs Enable Select G1 G2A G2B C B A L X X X X X X H X X X X X X H X X X H L L L L L H L L L L H H L L L H L H L L L H H H L L H L L H L L H L H H L L H H L H L L H H H X: Don’t care Outputs Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 H H H H H H H H H H H H H H H H H H H H H H H H L H H H H H H H H L H H H H H H H H L H H H H H H H H L H H H H H H H H L H H H H H H H H L H H H H H H H H L H H H H H H H H L Selected Output None None None Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 © 2019 2 Toshiba Electronic Devices & Storage Corporation 2019-01-31 System Diagram 1 A Select inputs 2 B 3 C Enable inputs 4 5 6 G1 TC74VHCT138AF/AFK 15 14 13 12 Data 11 outputs 10 9 7 Absolute Maximum Ratings (Note 1) 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 7.0 (Note 2) V −0.5 to VCC + 0.5 (Note 3) −20 mA ±20 (Note 4) mA ±25 mA ±75 mA 180 mW −65 to 150 °C 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 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). Note 2: VCC = 0 V Note 3: High or low state. IOUT absolute maximum rating must be observed. Note 4: VOUT  GND, VOUT  VCC © 2019 3 Toshiba Electronic Devices & Storage Corporation 2019-01-31 Operating Ranges (Note 1) TC74VHCT138AF/AFK Characteristics Symbol Rating Unit Supply voltage Input voltage Output voltage Operating temperature Input rise and fall time VCC VIN VOUT Topr dt/dV 4.5 to 5.5 0 to 5.5 0 to 5.5 0 to VCC −40 to 85 0 to 20 (Note 2) (Note 3) V V V °C 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: VCC = 0 V Note 3: High or low state Electrical Characteristics DC Characteristics Characteristics Symbol Test C.


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