Product category:
Analogue and Mixed Signal ICs
News Release from: Catalyst Semiconductor | Subject: CAT9555
Edited by the Electronicstalk Editorial
Team on 29 September 2006
Companion device expands I/O for 16bit
MCUs
The CAT9555 provides a simple and cost-effective method to enable 16bit I2C or SMBus general purpose I/O expansion for microcontrollers.
Catalyst Semiconductor has announced the next addition to its recently introduced I/O bus expander product line Similar to the recently announced CAT9554, which is an 8bit I/O expander, the new CAT9555 provides a simple and cost-effective method to enable 16bit I2C or SMBus general purpose I/O expansion for microcontrollers
This article was originally published on Electronicstalk on 7 Feb 2002 at 8.00am (UK)
Related stories
Digitally programmable potentiometers to take over
Catalyst Semiconductor has added two new digitally programmable potentiometer (DPP) ICs to its AE2 (analogue EEPROM) mixed-signal product line.
EEPROM provides more secure MPU supervision
Catalyst Semiconductor has expanded its AE2 analogue EEPROM mixed-signal product strategy with the CAT116x series of microprocessor supervisory circuits with serial 16Kbit EEPROM.
These new Catalyst I/O expanders help designers balance system performance, processor, and board costs for sensor, control, and LED applications in white goods, digital cameras, cellphones, PDAs, satellite radios, routers, hubs and servers.
The CAT9555 consists of two 8bit ports, which power up as inputs and can be configured as an input or output by writing to a register.
The fixed part of the I2C slave address is the same as the 8bit CAT9554 device, allowing any combination of up to eight of these devices to be connected on the same bus.
This gives designers the flexibility to control the exact number of functions their system requires.
An internal power-on reset circuit initialises the device and sets the registers to their default values.
Each I/O port is 5V input tolerant, with a high current I/O drive sink of up to 25mA and an I/O source of up to 10mA, maximum.
Additionally, each I/O port is compatible with logic thresholds of 2.5, 3.3 and 5V.
The CAT9555 is available in three RoHS-compliant package options: 24-lead SOIC, 24-pin TSSOP, and 24-pad 4 x 4mm TQFN.
Pricing for 10,000 piece quantities is $0.75 each.
Samples are now available.
Projected lead-times for production quantities are currently 6 to 8 weeks ARO.
• Catalyst Semiconductor: contact details and other news
• Email this article to a colleague
• Register for the free Electronicstalk email newsletter
• Electronicstalk Home Page
Search the Pro-Talk network of sites
