Features: ` ESD Protection
±15kV-IEC 1000-4-2 Air-Gap Discharge
±8kV-IEC 1000-4-2 Contact Discharge
±15kV-Human Body Model
` Guaranteed Propagation-Delay Tolerance Between All ICs
±8ns (MAX3093E)
±10ns (MAX3094E)
` Single +3V Operation (MAX3094E) Single +5V Operation (MAX3093E)
` 16-Pin TSSOP
`10Mbps Data Rate
` Allow up to 128 Receivers on the Bus
` 1nA Low-Power Shutdown Mode
` 2.4mA Operating Supply Current
` Pin-Compatible Upgrades to '34C86Application·Telecommunications Equipment
·Rugged RS-422/RS-485/RS-423 Bus Receiver
·Receivers for ESD-Sensitive Applications
·Level TranslatorsPinout
SpecificationsSupply Voltage (VCC)...........................................................+7V
Control Input Voltage (ENAC, ENBD).........-0.3V to (VCC + 0.3V)
Receiver Input Voltage (_+, _-).........................................±25V
Receiver Output Voltage (Y_).....................-0.3V to (VCC + 0.3V)
Output Short-Circuit Duration (Y_, one output) ........Continuous
Continuous Power Dissipation (TA = +70°C)
TSSOP (derate 9.4mW/°C above +70°C) ....................755mW
SO (derate 8.7mW/°C above +70°C)...........................696mW
Plastic DIP (derate 10.5mW/°C above +70°C) ............762mW
Operating Temperature Ranges
MAX309_EC_ _ ..................................................0°C to +70°C
MAX309_EE_ _ ...............................................-40°C to +85°C
Junction Temperature...................................................+150°C
Storage Temperature Range .......................-65°C to +160°C
Lead Temperature (soldering, 10s) .............................+300°C
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
DescriptionThe 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, lowpower upgrades to the industry-standard '34C86. They are available in space-saving TSSOP, narrow SO, and PDIP packages.
MAX3093E Data Sheet
