NLV14541BDR2G

Programmable Timers And Oscillators Overview

The NLV14541BDR2G is an automotive-grade programmable timer IC manufactured by onsemi. It integrates a 16-stage binary counter, an internal RC oscillator, and automatic power-on reset logic. The device operates within a supply voltage range of 3.0 Vdc to 18 Vdc. Key electrical parameters include a maximum clock pulse frequency of 6.0 MHz at 15 V, propagation delays ranging from 0.9 ns to 10.5 ns depending on the output stage, and a quiescent current of up to 20 µA with auto-reset disabled. It is housed in a SOIC-14 package.

Programmable Timers And Oscillators Feature Summary

• Automotive qualification: AEC-Q100 certified and PPAP capable for unique site requirements.
• Integrated low-power RC oscillator with ±2% accuracy over temperature (< 10 kHz).
• Flexible outputs selectable via Mode pins (2^8, 2^10, 2^13, or 2^16 stages).
• Automatic power-on reset initializes counters; external master reset available.

Programmable Timers And Oscillators Applications

• Automotive timing circuits requiring AEC-Q100 compliance.
• Frequency division applications using the 16-stage binary counter.
• Single-cycle timers or one-shot pulse generators.
• Clock conditioning for slow rise/fall time signals.

Programmable Timers And Oscillators Procurement Notes

Verify that the specific order includes the 'NLV' prefix to ensure AEC-Q100 qualification and PPAP capability. Confirm the suffix 'D' indicates the SOIC-14 package and 'R2G' denotes tape and reel shipping. Check for discontinuation notices regarding related variants like the NLV14541BDG rail-pack version.

Programmable Timers And Oscillators Selection Notes

Select this component when automotive reliability standards are mandatory. Ensure the application voltage stays between 3.0 V and 18 V. For precise timing, utilize the external RC network on Pins 1 and 2, or bypass the internal oscillator by applying an external clock to Pin 3 if higher accuracy than the built-in RC is required.

Programmable Timers And Oscillators Part Context

This part belongs to the MC14541B family of programmable timers. The 'NLV' prefix specifically designates devices intended for automotive and other applications requiring unique site and control change requirements, distinguishing it from standard commercial grade parts.

Programmable Timers And Oscillators Replacement Considerations

Standard commercial equivalents include MC14541BDR2G (same package) or MC14541BDTR2G (TSSOP-14). Note that non-NLV versions lack the specific automotive qualification and PPAP documentation required for regulated automotive supply chains.

Programmable Timers And Oscillators FAQ

How is the internal oscillator frequency determined?

The frequency is set by an external resistor (Rtc) and capacitor (Ctc) connected to Pins 1 and 2. For frequencies between 1 kHz and 100 kHz, the formula is f ≈ 1 / (2.3 * Rtc * Ctc).

What is the function of the Q/Q Select pin?

Pin 9 controls the initial output logic level after a reset. Setting it high makes the Q output initially high; setting it low makes the Q output initially low.

Can the internal oscillator be bypassed?

Yes. An external clock signal can be applied directly to Pin 3 (RS/RTC Output) to bypass the internal RC oscillator circuit.