The DS4550 is a 9-bit, nonvolatile (NV) I/O expander
with 64 bytes of NV user memory controlled by either
an I²C-compatible serial interface or an IEEE® 1149.1
JTAG port. The DS4550 offers a digitally programmable
alternative to hardware jumpers and mechanical
switches that are being used to control digital logic
nodes. Each I/O pin is independently configurable. The
outputs are open drain with selectable pullups. Each
output has the ability to sink up to 16mA, and since the
device is NV, it powers up in the desired state allowing
it to control digital logic inputs immediately on powerup
without having to wait for the host CPU to initiate
control.
Key Features
Applications/Uses
Programmable Replacement for Mechanical
Jumpers and Switches
Nine NV Inputs/Outputs
64-Byte NV User Memory (EEPROM)
I²C-Compatible Serial Interface and JTAG
Up to 8 Devices can be Multidropped on the Same
I²C Bus
IEEE 1149.1 Boundary Scan Compliant
Open-Drain Outputs with Configurable Pullups
Outputs Capable of Sinking 16mA
Low Power Consumption
Wide Operating Voltage Range: 2.7V to 5.5V
Operating Temperature Range: -40°C to +85°C
Network Storage
PC Peripherals
RAM-Based FPGA Bank Switching for Multiple Profiles
Notes: *This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
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