The MAX3093E/MAX3094E are rugged, low-power, quad, RS-422/RS-485 receivers featuring electrostatic discharge (ESD) protection for use in harsh environments. All receiver inputs are protected to ±15kV using IEC 1000-4-2 Air-Gap Discharge, ±8kV using IEC 1000-4-2 Contact Discharge, and ±15kV using the Human Body Model. The MAX3093E operates from a +5V supply, while the MAX3094E operates from a +3.3V supply. Receiver propagation delays are guaranteed to within ±8ns of a predetermined value, thereby ensuring device-to-device matching across production lots. The devices feature a 1nA low-power shutdown mode in which the receiver outputs are high impedance. When active, these receivers have a fail-safe feature that guarantees a logic-high output if the input is open circuit. They also have a quarter-unit-load input impedance that allows 128 receivers on a bus. The MAX3093E/MAX3094E are pin-compatible, low-power upgrades to the industry-standard ’34C86. They are available in space-saving TSSOP, narrow SO, and PDIP packages.
The MAX3093E and MAX3094E are rugged, low‑power quad RS‑422/RS‑485 receivers featuring up to +15 kV ESD protection and a low‑power shutdown mode. The MAX3093E runs from a +5 V supply, while the MAX3094E runs from a +3.3 V supply, and both guarantee propagation‑delay matching within a few nanoseconds.
These devices are pin‑compatible upgrades to the industry‑standard ’34C86 and are offered in 16‑pin TSSOP, narrow SO, and PDIP packages. They support data rates up to 10 Mbps and allow up to 128 receivers on a single bus, making them suitable for telecommunications and other harsh‑environment applications.
| ESD Protection (Air‑Gap) | +15 kV |
|---|---|
| ESD Protection (Contact) | +8 kV |
| ESD Protection (Human Body Model) | +15 kV |
| Propagation‑Delay (MAX3093E) | 8 ns |
| Propagation‑Delay (MAX3094E) | 10 ns |
| Supply Voltage (MAX3093E) | +5 V |
| Supply Voltage (MAX3094E) | +3.3 V |
| Operating Temperature Range | -40 °C to +85 °C |
| Operating Supply Current (no load, output enabled) | 2.4 mA |
| Maximum Receivers on Bus | 128 |
They are protected to +15 kV using the IEC 1000‑4‑2 Air‑Gap method, +8 kV using IEC 1000‑4‑2 Contact discharge, and +15 kV with the Human Body Model.
The MAX3093E requires a +5 V supply, while the MAX3094E requires a +3.3 V supply.
Up to 128 receivers can be connected on the bus.
Propagation‑delay matching is guaranteed within ±8 ns for the MAX3093E and ±10 ns for the MAX3094E.