(Hong Kong)
Product Summary
The CA95C09-25CN is an 8-bit I/O expander with an on-board 2-kbit EEPROM. The I/O expander’s eight quasi bidirectional data pins can be independently assigned as inputs or outputs to monitor board level status or activate indicator devices such as LEDs. The system master writes to the I/O configuation bits in the same way as for the PCF8574. The data for each Input or Output is kept in the corresponding Input or Output register. The system master can read all registers. It is ideal for: (1)board version tracking and configuration; (2)board health monitoring and status reporting; (3)multi-card systems in telecom, networking, and base station infrastructure equipment; (4)field recall and troubleshooting functions for installed boards; (5)general-purpose integrated i/o with memory; (6)drop in replacement for pcf8574 with integrated 2-kbit eeprom; (7)bus master sees gpio and eeprom as two separate devices; (8)three hardware address pins allow up to 8 pca9500s to be located in the same i2c/smbus.
Parametrics
CA95C09-25CN absolute maximum ratings: (1)vcc supply voltage: –0.5 4.0 v; (2)vi input voltage: vss – 0.5 to 5.5 v; (3)ii dc input current: –20 to 20 ma; (4)io dc output current: –25 to 25 ma; (5)idd supply current: –100 to 100 ma; (6)iss supply current: –100 to 100 ma; (7)ptot total power dissipation: 400 mw; (8)po total power dissipation per output: 100 mw; (9)tstg storage temperature: –65 to +150 °C; (10)tamb operating temperature: –40 to +85 °C.
Features
CA95C09-25CN features: (1)8 general purpose input/output expander/collector; (2)drop in replacement for pcf8574 with integrated 2-kbit eeprom; (3)internal 256 × 8 eeprom; (4)self timed write cycle; (5)4 byte page write operation; (6)i2c and smbus interface logic; (7)internal power-on reset; (8)noise filter on scl/sda inputs; (9)3 address pins allowing up to 8 devices on the i2c/smbus; (10)no glitch on power-up; (11)supports hot insertion; (12)power-up with all channels configured as inputs; (13)low standby current; (14)operating power supply voltage range of 2.5 v to 3.6 v; (15)5 v tolerant inputs/outputs; (16)0 khz to 400 khz clock frequency; (17)esd protection exceeds 2000 v hbm per jesd22-a114, 200 v mm per jesd22-a115 and 1000 v cdm per jesd22-c101; (18)latch-up testing is done to jesdec standard jesd78 which exceeds 100 ma; (19)package offerred: so16, tssop16, hvqfn16.
Diagrams
