MAX7321ATE Maxim Integrated, MAX7321ATE Datasheet
MAX7321ATE
Specifications of MAX7321ATE
Related parts for MAX7321ATE
MAX7321ATE Summary of contents
Page 1
... Between Read Operations ♦ INT Output Alerts Change on Inputs ♦ AD0 and AD2 Inputs Select from 16 Slave Addresses ♦ Low 0.6µA (typ) Standby Current ♦ -40°C to +125°C Operating Temperature PART MAX7321AEE+ MAX7321ATE+ **EP = Exposed paddle. +Denotes lead-free package. Applications PART MAX7319 MAX7320 MAX7321 ...
Page 2
I C Port Expander with 8 Open-Drain I/Os ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND.) Supply Voltage V+....................................................-0.3V to +6V SCL, SDA, AD0, AD2, RST, INT, P0–P7 ...................-0.3V to +6V P0–P7 Sink Current ............................................................ 25mA SDA Sink Current ...
Page 3
I C Port Expander with 8 Open-Drain I/Os PORT AND INTERRUPT INT TIMING CHARACTERISTICS (V+ = +1.71V to +5.5V -40°C to +125°C, unless otherwise noted. Typical values are +3.3V PARAMETER SYMBOL Port ...
Page 4
I C Port Expander with 8 Open-Drain I/ +25°C, unless otherwise noted.) A STANDBY CURRENT vs. TEMPERATURE 2 0kHz SCL 1.8 1.6 1.4 1 +5.0V 1 +3. +2.5V 0.8 ...
Page 5
I C Port Expander with 8 Open-Drain I/Os Detailed Description MAX7319–MAX7329 Family Comparison The MAX7319–MAX7323 family consists of five pin- compatible, eight-port expanders. Each version is opti- mized for different applications. The MAX7328 and MAX7329 are industry standard parts. ...
Page 6
I C Port Expander with 8 Open-Drain I/Os Table 1. MAX7319–MAX7329 Family Comparison (continued PART SLAVE INPUTS INTERRUPT ADDRESS MAX7323 110xxxx MAX7328 0100xxx MAX7329 0111xxx 16-PORT EXPANDERS MAX7324 8 101xxxx ...
Page 7
I C Port Expander with 8 Open-Drain I/Os Table 2. Read and Write Access to Eight-Port Expander Family SLAVE INTERRUPT PART INPUTS ADDRESS MAX7319 110xxxx 8 MAX7320 101xxxx — MAX7321 110xxxx MAX7322 110xxxx ...
Page 8
I C Port Expander with 8 Open-Drain I/Os Table 3. MAX7321 Address Map PIN CONNECTION AD2 AD0 A6 A5 SCL GND 1 1 SCL SCL SCL 1 1 SCL SDA 1 1 SDA GND 1 1 ...
Page 9
I C Port Expander with 8 Open-Drain I/Os SDA t SU,DAT t LOW t SCL HIGH t HD,STA t R START CONDITION Figure 1. 2-Wire Serial Interface Timing Details The MAX7321 operates as a slave that sends and 2 ...
Page 10
I C Port Expander with 8 Open-Drain I/Os Accessing the MAX7321 The MAX7321 is accessed through an I transition flags are cleared, and INT is deasserted each time the device acknowledges the I A single-byte read from the MAX7321 ...
Page 11
I C Port Expander with 8 Open-Drain I/ SDA MSB SCL Figure 5. Slave Address MAX7321 SLAVE ADDRESS SCL PORT I INT OUTPUT Figure 6. Reading the MAX7321 (1 Data ...
Page 12
I C Port Expander with 8 Open-Drain I/ SCL SLAVE ADDRESS S SDA START CONDITION INTERNAL WRITE TO PORT DATA OUT FROM PORT S = START CONDITION P = STOP CONDITION Figure 8. Writing ...
Page 13
I C Port Expander with 8 Open-Drain I/Os AD0 AD2 SCL SDA RST Driving LED Loads When driving LEDs, a resistor must be fitted in series with the LED to limit the LED current to no more than 20mA. ...
Page 14
I C Port Expander with 8 Open-Drain I/Os Driving Load Currents Higher than 20mA The MAX7321 can be used to drive loads, such as relays, that draw more than 20mA by paralleling out- puts. Use at least one output ...
Page 15
I2C Port Expander with 8 Open-Drain I/Os (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) ______________________________________________________________________________________ Package Information 15 ...
Page 16
I2C Port Expander with 8 Open-Drain I/Os (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) E MARKING E/2 AAAA D 0.10 C ...
Page 17
... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 17 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2006 Maxim Integrated Products ...