The SP3070E - SP3078E family is a ±15kV ESD-protected, 3.3V low-power RS-485/RS-422 transceiver. It features advanced receiver-failsafe protection for open, shorted, or terminated lines. Up to 256 transceivers can share the bus. It has a very low load for 8x greater fanout and hot swap glitch protection. The transceivers also have thermal shutdown to protect against driver contention. They are available in three industry-standard footprints and support three applications-optimized speed grades. The small form factor packages are suitable for industrial control, utility meters, building automation, instrumentation, and point of sale applications.
The SP3070E‑SP3078E family provides RS‑485/RS‑422 transceivers with +15 kV ESD protection, 3.3 V operation and advanced failsafe receiver protection for open, shorted or terminated lines. Devices are offered in three standard footprints (8‑pin and 14‑pin NSOIC) and three speed grades ranging from 250 kbps to 16 Mbps.
These transceivers are intended for industrial control, utility meters, building automation and point‑of‑sale applications. They feature hot‑swap glitch protection, thermal shutdown, and low load allowing up to 256 devices to share a common bus without repeaters.
| ESD protection (RS‑485 pins) | +15 kV |
|---|---|
| Operating temperature (MN grade) | -40 °C to +125 °C |
| Maximum data rate (low‑speed grades) | 250 kbps |
| Maximum data rate (high‑speed grades) | 16 Mbps |
| Input impedance (receiver) | 10 kΩ |
| Maximum number of transceivers on bus | 256 |
Each device provides +15 kV ESD protection on the RS‑485 pins.
The family allows up to 256 transceivers to be connected to a common bus.