SLLSFQ5A january 2023 – july 2023 THVD1454
PRODUCTION DATA
THVD1454 has integrated termination resistor of nominal 120 Ω across A/B bus terminals. Termination resistor is enabled or disabled using the TERM pin described in Table 8-3.
Signal state | Function | Comments |
---|---|---|
TERM = VCC | 120 Ω enabled between A and B | |
TERM = GND or floating | 120 Ω disabled between A and B | Termination is disabled by default |
On-chip 120 Ω termination resistor variation with temperature and across common mode voltage is shown in Figure 8-1 and Figure 8-2.
THVD1454 on-chip termination resistor has been designed so the termination block offers a resistive load to the bus, and does not alter the magnitude or phase of the bus signals from DC to 20Mbps signaling. See Figure 8-3 and Figure 8-4 with the bus voltage swept from -6 V to +6 V. Current into the bus changes linearly in both conditions of termination ON or OFF.