Total power consumption can be calculated using the information provided in the CMOS Power Consumption

and Cpd Calculation application note.

Thermal increase can be calculated using the information provided in the Thermal Characteristics of Standard

Linear and Logic (SLL) Packages and Devices application note.

CAUTION

The maximum junction temperature, TJ(max) listed in the Absolute Maximum Ratings, is an additional

limitation to prevent damage to the device. Do not violate any values listed in the Absolute Maximum

Ratings. These limits are provided to prevent damage to the device.

8.2.1.2 Input Considerations

Input signals must cross VIL(max) to be considered a logic LOW, and VIH(min) to be considered a logic HIGH. Do

not exceed the maximum input voltage range found in the Absolute Maximum Ratings.

Unused inputs must be terminated to either VCC or ground. The unused inputs can be directly terminated if the

input is completely unused, or the inputs can be connected with a pullup or pulldown resistor if the input is used

sometimes, but not always. A pullup resistor is used for a default state of HIGH, and a pulldown resistor is used

for a default state of LOW. The drive current of the controller, leakage current into the SN74LVC1G08B-EP (as

specified in the Electrical Characteristics), and the desired input transition rate limits the resistor size. A 10kΩ

resistor value is often used due to these factors.

The SN74LVC1G08B-EP has CMOS inputs and thus requires fast input transitions to operate correctly, as

defined in the Electrical Characteristics table. Slow input transitions can cause oscillations, additional power

consumption, and reduction in device reliability.

Refer to the Feature Description for additional information regarding the inputs for this device.

8.2.1.3 Output Considerations

The positive supply voltage is used to produce the output HIGH voltage. Drawing current from the output

decreases the output voltage as specified by the VOH specification in the Electrical Characteristics. The ground

voltage is used to produce the output LOW voltage. Sinking current into the output increases the output voltage

as specified by the VOL specification in the Electrical Characteristics.

Push-pull outputs that can be in opposite states, even for a very short time period, must never be connected

directly together. This can cause excessive current and damage to the device.

Two channels within the same device with the same input signals can be connected in parallel for additional

output drive strength.

Unused outputs can be left floating. Do not connect outputs directly to VCC or ground.

Refer to the Feature Description section for additional information regarding the outputs for this device.

8.2.2 Detailed Design Procedure

1. Recommended input conditions:

• For rise time and fall time specifications, see Δt/Δv in the Recommended Operating Conditions table.

• For specified high and low levels, see VIH and VIL in the Recommended Operating Conditions table.

• Inputs and outputs are overvoltage tolerant and can therefore go as high as 5.5V at any valid VCC.

2. Recommended output conditions:

• Load currents not exceeding ±50mA.

3. Frequency selection criterion:

• The effects of frequency upon the device's power consumption should be studied in the CMOS Power

Consumption and CPD Calculation application note.

• Added trace resistance and capacitance can reduce maximum frequency capability; follow the layout

practices listed in the Layout section.

SN74LVC1G08B-EP

SLVSLC4 – JUNE 2026

www.ti.com

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