1. The “N” vs. “T” suffix in the part number: This typically indicates internal design revisions or minor performance grading adjustments, which may affect: - Tuning characteristics: Although both are VCXOs and do not specify exact APR values, the “T” version may offer optimized tuning linearity or tuning voltage range, influencing PLL tracking accuracy. - Output signal quality: Subtle differences may exist in HCMOS output rise/fall times and jitter (e.g., phase jitter), which can impact timing margins in high-speed digital systems. - Internal reference crystal: Different crystal cut types or Q‑values may be used, leading to variations in long‑term aging rate and temperature drift characteristics—even when frequency stability is specified as ±20ppm. 2. Implied electrical compatibility: Critical parameters for the Enable/Disable function—such as enable/disable voltage thresholds and shutdown current—are not explicitly specified. Minor differences between variants could result in unstable state switching in low‑power control logic.