Is there a pin-compatible replacement for RX8025T-UB?

Yes, the EPSON RX8025T-UC is a pin-compatible replacement in the same SOP-14 package. However, it has a slightly higher minimum operating voltage (1.8V vs 1.6V) and lower frequency stability, which requires engineering review.

What risks should I check before replacing RX8025T-UB?

Key risks include: 1) Electrical: Ensure your system tolerates a higher minimum voltage and current. 2) Performance: Verify if the application can handle lower frequency stability, as many alternatives lack the target's DTCXO. 3) Package: Always confirm the replacement's footprint matches the SOP-14 layout.

RX8025T-UB Alternatives, Datasheet & Cross Reference | EPSON

The EPSON RX8025T-UB is a high-stability Real-Time Clock (RTC) module in a SOP-14 package, featuring a temperature-compensated crystal oscillator (DTCXO) for precise timekeeping. Finding a replacement requires careful attention to frequency stability.

AI replacement insight

Electrical risklow

Minor differences in voltage and current are unlikely to cause issues in most designs.

Package risklow

The SOP-14 package is common, and direct family variants exist.

Performance riskhigh

The target's key feature is high stability (DTCXO); many alternatives lack this, impacting application timing accuracy.

Can it be replaced directly?

The EPSON RX8025T-UC is a pin-compatible alternative to the RX8025T-UB, but it has slightly lower frequency stability and requires a minimum of 1.8V to operate.

Best replacement path

The most direct path is the RX8025T-UC, a variant in the same series. It is pin-compatible but a slight parametric downgrade.

Main risk

The primary risk is performance degradation, specifically the loss of high frequency stability if a non-DTCXO part is chosen.

Recommended alternatives

Pin-compatible variant from the same family with slightly relaxed voltage, current, and stability specifications.

View details

Alternative comparison matrix

Feature / factor	RX8025T-UB	RX8025T-UC	Q418025510002	Compatibility / risk
Package	SOP-14	SOP-14	SOP-14	SOP-14 — Package matches.; Q418025510002: Package matches.
Pin Count	14	14	-	14 — Pin count matches.
Voltage	1.6V to 5.5V	1.8V to 5.5V	1.7V to 5.5V	1.8V to 5.5V / 1.7V to 5.5V — Minimum supply voltage is higher.; Q418025510002: Minimum supply voltage is higher.
Current	0.8µA	1.2µA	0.48µA	1.2µA / 0.48µA — Typical current consumption is higher.; Q418025510002: Lower current consumption is an improvement.
Stability	±3.4ppm	±5.0ppm	Standard RTC (No DTCXO)	±5.0ppm / Standard RTC (No DTCXO) — Frequency stability is lower than target's ±3.4ppm.; Q418025510002: Lacks temperature compensation, significant downgrade.

Application & sourcing insights

Questions & answers

The RX8025T-UC is a close variant from the same family, offering pin compatibility but with slightly relaxed stability and power specs. For less critical applications, the RX-8025SA is an option, but it lacks temperature compensation.