L74VHC1GT14

LESHAN RADIO COMPANY, LTD. Schmitt-Trigger Inverter/ CMOS Logic Level Shifter with LSTTL–Compatible Inputs L74VHC1GT14 The L74VHC1GT14 is a single gate CMOS Schmitt–trigger inverter fabricated with silicon gate CMOS technology. It achieves high speed operation similar to equivalent Bipolar Schottky TTL while maintaining CMOS low power dissipation. The internal circuit is composed of three stages, including a buffer output which provides high noise immunity and stable output. The device input is compatible with TTL–type input thresholds and the output has a full 5 V CMOS level output swing. The input protection circuitry on this device allows overvoltage tolerance on the input, allowing the device to be used as a logic–level translator from 3.0 V CMOS logic to 5.0 V CMOS Logic or from 1.8 V CMOS logic to 3.0 V CMOS Logic while operating at the high–voltage power supply. The L74VHC1GT14 input structure provides protection when voltages up to 7 V are applied, regardless of the supply voltage. This allows the L74VHC1GT14 to be used to interface 5 V circuits to 3 V circuits. The output structures also provide protection when V CC = 0 V. These input and output structures help prevent device destruction caused by supply voltage – input/output voltage mismatch, battery backup, hot insertion, etc. The LMC74VHC1GT14 can be used to enhance noise immunity or to square up slowly changing waveforms. • High Speed: t PD = 4.5 ns (Typ) at V CC = 5 V • Low Power Dissipation: I CC = 2 mA (Max) at T A = 25°C • TTL–Compatible Inputs: V IL = 0.8 V; V IH = 2.0 V • CMOS–Compatible Outputs: V OH > 0.8 V CC ; V OL < 0.1 V CC @ Load • Power Down Protection Provided on Inputs and Outputs • Balanced Propagation Delays • Pin and Function Compatible with Other Standard Logic Families • Chip Complexity: FETs = 100; Equivalent Gates = 25 MARKING DIAGRAMS 5 4 1 2 3 VCd SC–70/SC–88A/SOT–353 DF SUFFIX Pin 1 d = Date Code 5 4 Figure 1. Pinout (Top View) 1 2 3 VCd Figure 2. Logic Symbol Pin 1 d = Date Code SOT–23/TSOP–5/SC–59 DT SUFFIX PIN ASSIGNMENT 1 2 3 4 5 NC IN A GND OUT Y V CC FUNCTION TABLE Inputs A L H Output Y H L ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 5 of this data sheet. 1/6 LESHAN RADIO COMPANY, LTD. L74VHC1GT14 MAXIMUM RATINGS Value Unit – 0.5 to + 7.0 V – 0.5 to +7.0 V V CC=0 – 0.5 to +7.0 V High or Low State –0.5 to V cc + 0.5 I IK Input Diode Current –20 mA I OK Output Diode Current V OUT < GND; V OUT > V CC +20 mA I OUT DC Output Current, per Pin + 25 mA I CC DC Supply Current, V CC and GND +50 mA PD Power dissipation in still air SC–88A, TSOP–5 200 mW θ JA Thermal resistance SC–88A, TSOP–5 333 °C/W TL Lead Temperature, 1 mm from Case for 10 s 260 °C TJ Junction Temperature Under Bias + 150 °C T stg Storage temperature –65 to +150 °C V ESD ESD Withstand Voltage Human Body Model (Note 2) >2000 V Machine Model (Note 3) > 200 Charged Device Model (Note 4) N/A I LATCH–UP Latch–Up Performance Above V CC and Below GND at 125°C (Note 5) ± 500 mA 1. Maximum Ratings are those values beyond which damage to the device may occur. Exposure to these conditions or conditions beyond those indicated may adversely affect device reliability. Functional operation under absolute–maximum–rated conditions is not implied. Functional operation should be restricted to the Recommended Operating Conditions. 2. Tested to EIA/JESD22–A114–A 3. Tested to EIA/JESD22–A115–A 4. Tested to JESD22–C101–A 5. Tested to EIA/JESD78 DC Supply Voltage DC Input Voltage DC Output Voltage RECOMMENDED OPERATING CONDITIONS Symbol Parameter DC Supply Voltage V CC V IN DC Input Voltage V OUT DC Output Voltage TA t r ,t f Operating Temperature Range Input Rise and Fall Time Symbol V CC V IN V OUT Parameter V CC = 0 High Low State V CC = 3.3 ± 0.3 V V CC = 5.0 ± 0.5 V NORMALIZED FAILURE RATE Min 3.0 0.0 0.0 0.0 – 55 0 0 Max 5.5 5.5 5.5 V CC + 125 100 20 Unit V V V °C ns/V DEVICE JUNCTION TEMPERATURE VERSUS TIME TO 0.1% BOND FAILURES Junction Temperature °C 80 90 100 110 120 130 140 Time, Hours 1,032,200 419,300 178,700 79,600 37,000 17,800 8,900 Time, Years 117.8 47.9 20.4 9.4 4.2 2.0 1.0 1 1 10 100 1000 TIME, YEARS Figure 3. Failure Rate vs. Time Junction Temperature 2/6 LESHAN RADIO COMPANY, LTD. L74VHC1GT14 DC ELECTRICAL CHARACTERISTICS Symbol V T+ Parameter Positive Threshold Voltage Negative Threshold Voltage VH Hysteresis Voltage Test Conditions T A = 25°C T A < 85°C –55°C