TC74VHCV240,244FT/FK TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74VHCV240FT,TC74VHCV240FK TC74VHCV244FT,TC74VHCV244FK Octal Schmitt Bus Buffer TC74VHCV240FT/FK TC74VHCV244FT/FK Inverted, 3-State Outputs Non-Inverted, 3-State Outputs The TC74VHCV240 and 244 are advanced high speed CMOS OCTAL BUS BUFFERs fabricated with silicon gate CMOS technology. They achieve the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation. The 74VHCV240 is an inverting 3-state buffer having two active-low output enables. The TC74VHCV244 is a non-inverting 3-state buffer, and has two active-low output enables. Input pin have hysteresis between the positive-going and negative-going thresholds. Thus the TC74VHCV240 and 244 are capable of squaring up transitions of slowly changing input signals and provides an improved noise immunity. 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, etc. Note: Output in off-state TC74VHCV240FT, TC74VHCV244FT TC74VHCV240FK, TC74VHCV244FK Weight TSSOP20-P-0044-0.65A VSSOP20-P-0030-0.50 : 0.08 g ( typ.) : 0.03 g ( typ.) Features • High speed: tpd = 3.9 ns (typ.) at VCC = 5 V • Low power dissipation: ICC = 2 μA (max) at Ta = 25°C • Wide operating voltage range: VCC (opr) = 1.8 V to 5.5 V • Ouput current: |IOH|/IOL = 16 mA (min) (VCC = 4.5 V) • Available in 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.) 240/244 type 1 2010-07-09 TC74VHCV240,244FT/FK Pin Assignment TC74VHCV240 TC74VHCV244 1G 1 20 VCC 1G 1 20 VCC 1A1 2 19 2G 1A1 2 19 2G 3 18 1Y1 2Y4 3 18 1Y1 1A2 4 17 2A4 1A2 4 17 2A4 2Y3 5 16 1Y 2 2Y3 5 16 1Y2 1A3 6 15 2A3 1A3 6 15 2A3 2Y 2 7 14 1Y3 2Y2 7 14 1Y3 1A4 8 13 2A2 1A4 8 13 2A2 2Y1 9 12 1Y 4 2Y1 9 12 1Y4 GND 10 11 2A1 GND 10 11 2A1 2Y 4 (top view) (top view) Truth Table Inputs Outputs G An Yn Yn L L L H L H H L H X Z Z X: Don’t care Z: High impedance Yn: TC74VHCV244 Y n : TC74VHCV240 2 2010-07-09 TC74VHCV240,244FT/FK Absolute Maximum Ratings (Note1) Characteristics Symbol Rating Unit Supply voltage range VCC −0.5 to 7.0 V DC input voltage VIN −0.5 to 7.0 V −0.5 to 7.0 (Note 2) −0.5 to VCC + 0.5 (Note 3) V 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 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 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: Output in off-state Note 3: High or low state. IOUT absolute maximum rating must be observed. Note 4: VOUT < GND, VOUT > VCC Operating Ranges (Note1) Characteristics Symbol Rating Unit Power supply voltage VCC 1.8 to 5.5 V Input voltage VIN 0 to 5.5 V Output voltage VOUT 0 to 5.5 (Note 2) 0 to VCC (Note 3) V Operating temperature Topr −40 to 85 °C Input rise and fall time dt/dv 0 to 20(Vcc=3.3 ± 0.3V) 0 to 1(Vcc=5 ± 0.5V) ms/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: Output in off-state Note 3: High or low state. 3 2010-07-09 TC74VHCV240,244FT/FK Electrical Characteristics DC Characteristics Test Condition Characteristics Positive threshold voltage Negative threshold voltage Hysteresis voltage Symbol VP VN VH VCC (V) Min Typ. Max Min Max ― 1.8 2.3 3.0 4.5 5.5 ― ― ― ― ― ― ― ― ― ― 1.65 1.85 2.20 3.15 3.85 ― ― ― ― ― 1.65 1.85 2.20 3.15 3.85 ― 1.8 2.3 3.0 4.5 5.5 0.15 0.45 0.90 1.35 1.65 ― ― ― ― ― ― ― ― ― ― 0.15 0.45 0.90 1.35 1.65 ― ― ― ― ― ― 1.8 2.3 3.0 4.5 5.5 0.15 0.20 0.30 0.40 0.50 ― ― ― ― ― 1.05 1.10 1.20 1.40 1.60 0.15 0.20 0.30 0.40 0.50 1.05 1.10 1.20 1.40 1.60 1.8 3.0 4.5 1.7 2.9 4.4 1.8 3.0 4.5 ― ― ― 1.7 2.9 4.4 ― ― ― 3.0 2.58 ― ― 2.48 ― 4.5 3.94 ― ― 3.80 ― IOL = 50 μA VIN = VIH or IOL = 8 mA VIL 1.8 3.0 4.5 ― ― ― 0.0 0.0 0.0 0.1 0.1 0.1 ― ― ― 0.1 0.1 0.1 3.0 ― ― 0.36 ― 0.44 IOL = 16 mA 4.5 ― ― 0.44 ― 0.55 IOH = −50 μA High-level output voltage VOH VIN = VIH or IOH = −8 mA VIL IOH = −16 mA Low-level output voltage VOL Ta = −40 to 85°C Ta = 25°C Unit V V V 3-state output off-state current IOZ VIN = VIH or VIL VOUT = 0 to 5.5V 1.8 to 5.5 ― ― ±0.5 ― ±5.0 μA Power-off leakage current IOFF VIN/VOUT = 5.5 V 0 ― ― 0.5 ― 5.0 μA 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 ― ― 2.0 ― 20.0 μA 4 2010-07-09 TC74VHCV240,244FT/FK AC Characteristics (input: tr = tf = 3 ns) Characteristics VCC (V) CL (pF) Min Typ. Max Min Max 15 ⎯ 6.4 11.6 1.0 14.0 50 ⎯ 9.2 14.4 1.0 17.0 15 ⎯ 5.0 7.5 1.0 9.0 50 ⎯ 7.0 11.0 1.0 12.5 15 ⎯ 3.9 5.5 1.0 6.5 50 ⎯ 5.4 7.5 1.0 8.5 15 ⎯ 6.7 12.5 1.0 15.0 50 ⎯ 9.5 15.3 1.0 18.0 15 ⎯ 5.0 8.4 1.0 10.0 50 ⎯ 7.2 11.9 1.0 13.5 15 ⎯ 3.8 5.5 1.0 6.5 50 ⎯ 5.4 7.5 1.0 8.5 15 ⎯ 7.8 14.6 1.0 17.0 50 ⎯ 11.1 17.8 1.0 21.0 15 ⎯ 5.7 10.6 1.0 12.5 50 ⎯ 8.4 14.1 1.0 16.0 15 ⎯ 4.1 7.3 1.0 8.5 50 ⎯ 6.2 9.3 1.0 10.5 2.5 ± 0.2 50 ⎯ 14.3 19.2 1.0 21.0 3.3 ± 0.3 50 ⎯ 10.9 14.0 1.0 16.0 5.0 ± 0.5 50 ⎯ 8.7 9.2 1.0 10.5 2.5 ± 0.2 50 ⎯ ― 2.0 ― 2.0 3.3 ± 0.3 50 ⎯ ― 1.5 ― 1.5 5.0 ± 0.5 50 ⎯ ― 1.0 ― 1.0 2.5 ± 0.2 Propagation delay time tpLH (TC74VHCV240) tpHL ⎯ 3.3 ± 0.3 5.0 ± 0.5 2.5 ± 0.2 Propagation delay time tpLH (TC74VHCV244) tpHL ⎯ 3.3 ± 0.3 5.0 ± 0.5 2.5 ± 0.2 3-state output enable time tpZL tpZH RL = 1 kΩ 3.3 ± 0.3 5.0 ± 0.5 3-state output disable time Output to output skew Input capacitance Output capacitance Power dissipation capacitance (Note 2) tpLZ tpHZ tosLH tosHL RL = 1 kΩ (Note 1) Ta = −40 to 85°C Ta = 25°C Test Condition Symbol Unit ns ns ns ns ns CIN ⎯ ⎯ 4 10 ⎯ 10 pF COUT ⎯ ⎯ 6 ⎯ ⎯ ⎯ pF TC74VHCV240 ⎯ 20 ⎯ ⎯ ⎯ TC74VHCV244 ⎯ 21 ⎯ ⎯ ⎯ CPD pF Note 1: Parameter guaranteed by design. tosLH = |tpLHm − tpLHn|, tosHL = |tpHLm − tpHLn| Note 2: 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 / 8 (per bit) 5 2010-07-09 TC74VHCV240,244FT/FK Noise Characteristics (input: tr = tf = 3 ns) Characteristics Ta = 25°C Test Condition Symbol VCC (V) Typ. Limit 3.3 0.45 ⎯ 5.0 0.9 ⎯ 3.3 −0.1 ⎯ 5.0 −0.3 ⎯ Unit Quiet output maximum dynamic VOL VOLP CL = 50 pF Quiet output minimum dynamic VOL VOLV CL = 50 pF Minimum high level dynamic input voltage VIHD CL = 50 pF 5.0 ⎯ 3.5 V Maximum low level dynamic input voltage VILD CL = 50 pF 5.0 ⎯ 1.5 V 6 V V 2010-07-09 TC74VHCV240,244FT/FK Package Dimensions Weight: 0.08 g (typ.) 7 2010-07-09 TC74VHCV240,244FT/FK Package Dimensions Weight: 0.03 g (typ.) 8 2010-07-09 TC74VHCV240,244FT/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. 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