SN74HCS573 datasheet(14/28 Pages) TI

Il numero della parte	SN74HCS573

Spiegazioni elettronici	SN74HCS573-Q1 Automotive Octal Transparent D-Type Latches with Schmitt-Trigger Inputs, 3-State Outputs, and Flow-Through Pinout

PDF	28 Pages

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Produttore elettronici	TI [Texas Instruments]

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9.2.2 Detailed Design Procedure

1. Add a decoupling capacitor from VCC to GND. The capacitor needs to be placed physically close to the

device and electrically close to both the VCC and GND pins. An example layout is shown in the Layout

section.

2. Ensure the capacitive load at the output is ≤ 50 pF. This is not a hard limit, however it will ensure

optimal performance. This can be accomplished by providing short, appropriately sized traces from the

SN74HCS573-Q1 to one or more of the receiving devices.

3. Ensure the resistive load at the output is larger than (VCC / IO(max)) Ω. This will ensure that the maximum

output current from the Absolute Maximum Ratings is not violated. Most CMOS inputs have a resistive load

measured in MΩ; much larger than the minimum calculated above.

4. Thermal issues are rarely a concern for logic gates; the power consumption and thermal increase, however,

can be calculated using the steps provided in the application report, CMOS Power Consumption and Cpd

Calculation.

9.2.3 Application Curve

Figure 9-2. Example timing diagram for one channel

SN74HCS573-Q1

SCLS852 – DECEMBER 2021

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SN74HCS573 Scheda tecnica(PDF) 14 Page - Texas Instruments