TC74VHC9541P/FT/FK TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74VHC9541P,TC74VHC9541FT,TC74VHC9541FK Octal Universal Schmitt Buffer with 3-State Outputs The TC74VHC9541 is an ultra-high-speed octal Schmitt buffer fabricated using silicon-gate CMOS technology. The TC74VHC9541 combines low power consumption of CMOS with Schottky TTL speeds. The outputs can be put in the high-impedance state by placing a logic HIGH on the Enable ( G ) input. The CONT input determines the logical inversion of data. A logic LOW on the CONT input configures the TC74VHC9541 as an inverter; a logic HIGH on the CONT input configures the TC74VHC9541 as a buffer. All the inputs have hysteresis between the positive-going and negative-going thresholds. Thus the TC74VHC9541 is capable of squaring up transitions of slowly changing input signals and provides an improved noise immunity. Additionally, all the inputs have a newly developed protection circuit without a diode returned to VCC. This enables the inputs to be tolerant of up to 5 volts even when power supply is down. The input power-down protection capability makes the TC74VHC9541 ideal for a wide range of applications, such as interfacing between different voltages, voltage translation from 5 V to 3 V and battery back-up circuits. TC74VHC9541P TC74VHC9541FT TC74VHC9541FK Features • High speed: tpd = 5.0 ns (typ.) (VCC = 5 V) • Low supply current: ICC = 4 μA (max) (Ta = 25°C) • High noise immunity: VNIH = VNIL = 28% VCC (min) • All inputs are provided with power-down protection. • Symmetrical rise and fall delays: tpLH ≈ tpHL • Wide operating voltage range: VCC (opr) = 2 to 5.5 V • Pin-compatible with TC74VHC540 and TC74VHC541 Weight DIP20-P-300-2.54A: 1.30 g (typ.) TSSOP20-P-0044-0.65A: 0.08 g (typ.) VSSOP20-P-0030-0.50: 0.03 g (typ.) 1 2009-02-01 TC74VHC9541P/FT/FK Pin Assignment CONT CONT 1 20 VCC A1 A1 2 19 G A2 3 18 Y1 A2 A3 4 17 Y2 A3 A4 5 16 Y3 A4 A5 15 6 Y4 A6 7 14 Y5 A5 A7 8 13 Y6 A6 A8 9 12 Y7 A7 GND 10 11 Y8 A8 1 2 3 4 19 18 17 G Y1 Y2 16 Y3 5 15 6 14 7 13 8 12 9 11 Y4 Y5 Y6 Y7 Y8 (top view) Truth Table Inputs Outputs G CONT An Yn H X X Z L L L H L L H L L H L L L H H H X: Don’t care Z: High impedance 2 2009-02-01 TC74VHC9541P/FT/FK Absolute Maximum Ratings (Note) Characteristics Symbol Rating Unit Supply voltage range VCC −0.5 to 7.0 V DC input voltage VIN −0.5 to 7.0 V 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 500 (DIP) (Note 2)/180(TSSOP/VSSOP) mW Storage temperature Tstg −65 to 150 °C DC output voltage 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: 500 mW in the range of Ta = −40 to 65°C. From Ta = 65 to 85°C a derating factor of −10 mW/°C shall be applied until 300 mW. Operating Ranges (Note) Characteristics Symbol Rating Unit Supply voltage VCC 2.0 to 5.5 V Input voltage VIN 0 to 5.5 V VOUT 0 to VCC V Topr −40 to 85 °C Output voltage Operating temperature 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 2009-02-01 TC74VHC9541P/FT/FK Electrical Characteristics DC Characteristics Characteristics Positive threshold voltage Negative threshold voltage Hysteresis voltage Symbol Test Condition VH Typ Max Min Max 3.0 ― ― 2.20 ― 2.20 4.5 ― ― 3.15 ― 3.15 5.5 ― ― 3.85 ― 3.85 3.0 0.90 ― ― 0.90 ― 4.5 1.35 ― ― 1.35 ― 5.5 1.65 ― ― 1.65 ― 3.0 0.30 ― 1.20 0.30 1.20 4.5 0.40 ― 1.40 0.40 1.40 5.5 0.50 ― 1.60 0.50 1.60 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 5.5 ― ― ±0.25 ― ±2.50 μA ― IOH = −50 μA High-level output voltage VOH VIN = VIH or VIL IOL = 50 μA Low-level output voltage VOL Unit Min ― VN Ta = −40~85°C VCC (V) ― VP Ta = 25°C VIN = VIH or VIL VIN = VIH or VIL V V V V V 3-state output off-state current IOZ 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 VOUT = VCC or GND 4 2009-02-01 TC74VHC9541P/FT/FK AC Characteristics (input: tr = tf = 3 ns) Characteristics Test Condition Symbol VCC (V) Propagation delay time tpLH (An-Yn) tpHL Propagation delay time tpLH (CONT-Yn) tpHL 3-state output enable time 3-state output disable time Output to output skew Input capacitance Output capacitance Power dissipation capacitance (Note 2) tpZL tpZH tpLZ tpHZ tosHL tosLH CL (pF) Min Typ. Max Min Max 15 ― 6.0 8.0 1.0 10.0 50 ― 9.0 12.5 1.0 15.0 15 ― 5.0 5.5 1.0 7.0 50 ― 7.0 8.5 1.0 10.0 15 ― 8.5 11.5 1.0 13.5 50 ― 13.0 17.0 1.0 20.5 15 ― 6.5 8.0 1.0 9.5 50 ― 10.5 12.5 1.0 15.0 15 ― 6.0 8.0 1.0 9.5 50 ― 10.5 13.5 1.0 16.5 15 ― 4.5 5.5 1.0 6.5 50 ― 9.0 10.5 1.0 12.5 3.3 ± 0.3 50 ― 12.5 13.5 1.0 16.0 5.0 ± 0.5 50 ― 9.0 9.5 1.0 11.0 3.3 ± 0.3 50 ― ― 1.5 ― 1.5 5.0 ± 0.5 50 ― ― 1.0 ― 1.0 3.3 ± 0.3 ― 5.0 ± 0.5 3.3 ± 0.3 ― 5.0 ± 0.5 3.3 ± 0.3 RL = 1 kΩ 5.0 ± 0.5 RL = 1 kΩ (Note 1) Ta = −40 to 85°C Ta = 25°C Unit ns ns ns ns ns CIN ― ― 4 10 ― 10 pF COUT ― ― 6 ― ― ― pF ― 11 ― ― ― pF CPD fIN = 1 MHz 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 2009-02-01 TC74VHC9541P/FT/FK Input Equivalent Circuit INPUT 6 2009-02-01 TC74VHC9541P/FT/FK Package Dimensions Weight: 1.30 g (typ.) 7 2009-02-01 TC74VHC9541P/FT/FK Package Dimensions Weight: 0.08 g (typ.) 8 2009-02-01 TC74VHC9541P/FT/FK Package Dimensions Weight: 0.03 g (typ.) 9 2009-02-01 TC74VHC9541P/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. 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