Features: • Dual 2x2 Crosspoint/Repeater Switch
• Meets or Exceeds the Requirements of ANSI TIA/EIA-644-1995
• Designed for Signaling Rates up to 650 Mbit/s (325Mhz)
• Operates from a single 3.3V Supply: 40°C to 85°C
• Low-Voltage Differential Signaling with Output Voltages of ±350mV into:- 100 load (PI90LV044)- 50 load Bus LVDS Signaling (PI90LVB044)
• Accepts ±350mV differential inputs
• Wide common mode input range: 0.2V to 2.7V
• Output drivers are high impedance when disabled or when VCC 1.5V
• Inputs are open, short, and terminated fail safe
• Propagation Delay Time: 3.5ns
• ESD protection is 10kV on bus pins
• Bus Pins are High Impedance when disabled or with VCC less than 1.5V
• TTL Inputs are 5V Tolerant
• Power Dissipation at 400 Mbit/s of 250mW
• Packaging (Pb-free & Green available): - 28-pin QSOP (Q)- 28-pin TSSOP (L)Pinout
SpecificationsSupply Voltage Range, VCC(1).......................................................................0.5V to 4V
Voltage Range (DE, S0, S1) ...............................................................0.5 to 6V
Input Voltage Range, VI (A or B)..................................... 0.5V to VCC + 0.5V
Electrostatic Discharge: A, B, Y, Z, and GND(2).........Class 3, A: 16kV, B:600V
All Pins..................................................... Class 3, A: 7kV, B:500V
Storage Temperature Range ......................................................65°C to 150°C
Lead Temperature 1, 6 mm (1/16 inch) from case for 10 seconds........... 260°C
Notes:
1. 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 ndicated under "Recommended Operating Conditions" is not implied. Exposure to Absolute-Maximum-Rated conditions for extended periods may affect device reliability.
2. All voltage values, except differential I/O bus voltages, are with respect to ground terminal.
3. Tested in accordance with MIL-STD-883C Method 3015.7
DescriptionThe PI90LV044 and PI90LVB044 are monolithic dual 2x2 asynchronous crosspoint/repeater switches. The crosspoint function is based on a multiplexer tree architecture. Each 2x2 switch can be considered as a pair of 2:1 multiplexers that share the same inputs. The signal path through each switch is fully differential with minimal propagation delay. The signal path is unregistered, so no clock is required for the data inputs. The signal line drivers and receivers use Low Voltage Differential Signaling (LVDS) to achieve signaling rates as high as 650Mbps.
The LVDS standard PI90LV044 and PI90LVB044 provides a minimum differential output voltage magnitude of 247 mV into a 100 load and receipt of 100 mV signals with up to 1V of ground potential difference between a transmitter and receiver. The PI90LVB044 doubles the output drive current to achieve LVDS levels with a 50 ohm load.
The intended application of PI90LV044 and PI90LVB044 is for loop-through and redundant channel switching for both point-to-point baseband (PI90LV044) and multipoint (PI90LVB044) data transmissions over controlled impedance media.
PI90LV044 Data Sheet
