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Part No.74HCT393D
MfrNEXPERIA
Size268 Kbytes
Pages15 pages
DescriptionDual 4-bit binary ripple counter
Datasheet SummaryAI
1. General Description:

️· These documents detail the electrical characteristics of the 74HC393 and 74HCT393, which are dual 4-bit binary ripple counters.

2. Operating Conditions & Supply Voltage:

️· Supply voltage isn't explicitly stated, but implied to be within a range consistent with standard logic levels (likely 2.0V to 6.0V, based on the waveform data).
️· Temperature Range: Not specified, but implied to cover -40°C to +85°C (and potentially up to 125°C for some parameters).

3. Key Electrical Characteristics (Significant Differences Highlighted):

Parameter 74HC393 74HCT393 Notes
Maximum Clock Frequency (fclk(max)) VCC=4.5V: 27-48 MHz VCC=4.5V: 22-18 MHz Higher for HC variant
Propagation Delay (tpd) nCP to nQ0 VCC=4.5V: 15-25ns VCC=4.5V: 6-10ns Faster for CT variant
High-to-Low Propagation Delay (tPHL) nMR to nQx VCC=4.5V: 18-32ns VCC=4.5V: 6-10ns Faster for CT variant
Transition Time (tt) Qn VCC=4.5V: 7-15ns VCC=4.5V: 7-15ns Same
Power Dissipation Capacitance (CPD) CL=50pF, f=1MHz, VI=GND to VCC - 1.5V: 25pF CL=50pF, f=1MHz, VI=GND to VCC: 23pF Lower for HC variant
Pulse Width (tW) nCP HIGH/LOW VCC=4.5V: 19-11 ns VCC=4.5V: 6-24 ns
Recovery Time (trec) nMR to nCP VCC=4.5V: 5 ns VCC=4.5V: 0-5 ns

4. Power Dissipation Calculation:

️· A formula is provided for calculating dynamic power dissipation (P<sub>D</sub>):

P<sub>D</sub> = C<sub>PD</sub> × V<sub>CC</sub>[2] × f<sub>i</sub> × N + Σ(C<sub>L</sub> × V<sub>CC</sub>[2] × f<sub>o</sub> )

Where:

- f<sub>i</sub> = input frequency (MHz)
- f<sub>o</sub> = output frequency (MHz)
- C<sub>L</sub> = output load capacitance (pF)
- N = number of inputs switching
- V<sub>CC</sub> = supply voltage (V)



5. Key Differences Summary (74HC393 vs. 74HCT393):

️· Speed: The 74HCT393 generally operates at a faster clock frequency and has a lower propagation delay compared to the 74HC393. This is reflected in the listed clock frequencies and propagation delay times.
️· Power Consumption: The 74HC393 generally has lower power dissipation.

Important Notes:

️· This is a summary based solely on the provided text. Consult the complete datasheet for detailed specifications, waveforms, and application information.
️· The values provided are typical and the actual performance may vary depending on the operating conditions.
️· The bracketed '2' after VCC indicates the exponent of 2.

Hopefully, this comprehensive summary helps you understand the key aspects of the 74HC393 and 74HCT393 counters! Let me know if you're looking for any specific detail.
74HCT393D Datasheet with Chat AI
  • AIauthorized
    Hello, Please ask a question about 74HCT393D Datasheet.
    Example questions: ➤ What is the maximum clock frequency (fclk(max)) for the 74hct393 at a vcc of 4.5v?➤ The datasheet defines a formula for calculating dynamic power dissipation. identify the variables used in this formula and briefly explain what each variable represents.➤ What is the typical value of the power dissipation capacitance (cpd) for the 74hc393 when cl = 50pf and f = 1 mhz?
    • Datasheet Details
    Part No.74HCT393D
    ManufacturerNEXPERIA
    Size268 Kbytes
    Pages15 pages
    DescriptionDual 4-bit binary ripple counter
    Datasheet Summary AI Expand summary
    1. General Description:

    ️· These documents detail the electrical characteristics of the 74HC393 and 74HCT393, which are dual 4-bit binary ripple counters.

    2. Operating Conditions & Supply Voltage:

    ️· Supply voltage isn't explicitly stated, but implied to be within a range consistent with standard logic levels (likely 2.0V to 6.0V, based on the waveform data).
    ️· Temperature Range: Not specified, but implied to cover -40°C to +85°C (and potentially up to 125°C for some parameters).

    3. Key Electrical Characteristics (Significant Differences Highlighted):

    Parameter 74HC393 74HCT393 Notes
    Maximum Clock Frequency (fclk(max)) VCC=4.5V: 27-48 MHz VCC=4.5V: 22-18 MHz Higher for HC variant
    Propagation Delay (tpd) nCP to nQ0 VCC=4.5V: 15-25ns VCC=4.5V: 6-10ns Faster for CT variant
    High-to-Low Propagation Delay (tPHL) nMR to nQx VCC=4.5V: 18-32ns VCC=4.5V: 6-10ns Faster for CT variant
    Transition Time (tt) Qn VCC=4.5V: 7-15ns VCC=4.5V: 7-15ns Same
    Power Dissipation Capacitance (CPD) CL=50pF, f=1MHz, VI=GND to VCC - 1.5V: 25pF CL=50pF, f=1MHz, VI=GND to VCC: 23pF Lower for HC variant
    Pulse Width (tW) nCP HIGH/LOW VCC=4.5V: 19-11 ns VCC=4.5V: 6-24 ns
    Recovery Time (trec) nMR to nCP VCC=4.5V: 5 ns VCC=4.5V: 0-5 ns

    4. Power Dissipation Calculation:

    ️· A formula is provided for calculating dynamic power dissipation (P<sub>D</sub>):

    P<sub>D</sub> = C<sub>PD</sub> × V<sub>CC</sub>[2] × f<sub>i</sub> × N + Σ(C<sub>L</sub> × V<sub>CC</sub>[2] × f<sub>o</sub> )

    Where:

    - f<sub>i</sub> = input frequency (MHz)
    - f<sub>o</sub> = output frequency (MHz)
    - C<sub>L</sub> = output load capacitance (pF)
    - N = number of inputs switching
    - V<sub>CC</sub> = supply voltage (V)



    5. Key Differences Summary (74HC393 vs. 74HCT393):

    ️· Speed: The 74HCT393 generally operates at a faster clock frequency and has a lower propagation delay compared to the 74HC393. This is reflected in the listed clock frequencies and propagation delay times.
    ️· Power Consumption: The 74HC393 generally has lower power dissipation.

    Important Notes:

    ️· This is a summary based solely on the provided text. Consult the complete datasheet for detailed specifications, waveforms, and application information.
    ️· The values provided are typical and the actual performance may vary depending on the operating conditions.
    ️· The bracketed '2' after VCC indicates the exponent of 2.

    Hopefully, this comprehensive summary helps you understand the key aspects of the 74HC393 and 74HCT393 counters! Let me know if you're looking for any specific detail.