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Part: MAX7311AWG
Category:
Microcontrollers
Description: MAX7311 2-Wire-Interfaced 16-Bit I/o Port Expander With Interrupt
Company: Maxim Integrated Products
Datasheet: Download MAX7311AWG datasheet File size : 502 kB
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19-2747; Rev 0; 1/03
2-Wire-Interfaced 16-Bit I/O Port Expander with Interrupt
General Description
The MAX7311 2-wire-interfaced expander provides 16b i t parallel input/output (I/O) port expansion for SMBusTM-compatible and I2C-compatible applications. The MAX7311 consists of input port registers, output port registers, polarity inversion registers, configuration registers, a bus timeout register, and an SMBus/I2Cc o m p a t i b l e serial interface. The system master can invert the MAX7311 input data by writing to the activehigh polarity inversion register. The system master can enable or disable bus timeout by writing to the bus timeout register. Any of the 16 I/O ports can be configured as an input or output. A power-on reset (POR) initializes the 16 I/Os as inputs. Three address select pins configure one of 64 slave ID addresses. The MAX7311 is available in 24-pin SO, SSOP, TSSOP, and thin QFN packages and is specified over the -40°C to +125°C automotive temperature range. o 400kbps I2C-Compatible o 2V to 5.5V Operation o 5V Overvoltage Tolerant I/Os o 16 I/O Pins that Default to Inputs on Power-Up o Open-Drain Interrupt Output (INT) o Bus Timeout for Lock-Up-Free Operation o 64 Slave ID Addresses Available o Low Standby Current (2.9µA typ) o Polarity Inversion o 4mm 4mm, 0.8mm Thin QFN Package o -40°C to +125°C Operation
Features
Serial Interface
MAX7311
Ordering Information
PART MAX7311AAG MAX7311ATG MAX7311AUG TEMP RANGE PIN-PACKAGE MAX7311AWG -40°C to +125°C 24 Wide SO -40°C to +125°C 24 SSOP -40°C to +125°C 24 Thin QFN (4mm 4mm) -40°C to +125°C 24 TSSOP
Applications
Servers RAID Systems Industrial Control Medical Equipment PLCs Instrumentation and Test Measurement
SMBus is a trademark of Intel Corp.
Pin Configurations
TOP VIEW
INT 1 AD1 2 AD2 3 I/O0 4 I/O1 5 I/O2 6 I/O3 7 I/O4 8 I/O5 9 I/O6 10 I/O7 11 GND 12 24 V+ I/O0 23 SDA I/O1 22 SCL I/O2 21 AD0 3 4 5 6 7 8 9 10 11 12 16 I/O14 I/O3 20 I/O15 I/O4 19 I/O14 I/O5 18 I/O13 17 I/O12 16 I/O11 15 I/O10 14 I/O9 13 I/O8 I/O6 I/O7 GND I/O8 I/O9 I/O10 13 I/O11 14 I/O12 2 17 I/O15 1 AD2 AD1 INT V+ SDA SCL 24 23 22 21 20 19 18 AD0
MAX7311
MAX7311
15 I/O13
THIN QFN
TSSOP/SSOP/SO
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com.
2-Wire-Interfaced 16-Bit I/O Port Expander with Interrupt MAX7311
ABSOLUTE MAXIMUM RATINGS
V+ to GND .......-0.3V to +6V I/O0I/O15 as Inputs ...(GND - 0.3V) to +6V SCL, SDA, AD0, AD1, AD2, INT..........(GND - 0.3V) to +6V Maximum V+ Current ......+250mA Maximum GND Current .........-250mA DC Input Current on I/O0I/O15 ......±20mA DC Output Current on I/O0I/O15 ...±80mA Continuous Power Dissipation (TA = +70°C) 24-Pin Wide SO (derate 11.8mW/°C above +70°C) ....941mW 24-Pin SSOP (derate 8.0mW/°C above +70°C) ..640mW 24-Pin TSSOP (derate 12.2mW/°C above +70°C) .......975mW 24-Pin Thin QFN (derate 20.8mW/°C above +70°C) .1668mW Operating Temperature Range .......-40°C to +125°C Junction Temperature ......+150°C Storage Temperature Range .....-65°C to +150°C Lead Temperature (soldering, 10s) .........+300°C
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 indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
DC ELECTRICAL CHARACTERISTICS
(V+ = 2V to 5.5V, TA = -40°C to +125°C, unless otherwise noted. Typical values are at V+ = 3.3V, TA = +25°C.) (Note 1)
PARAMETER Supply Voltage Supply Current SYMBOL V
+
CONDITIONS V+ = 2V
MIN 2
TYP 23 43 80 2.3 2.9 3.8 1.4
MAX 5.5 35 60 120 11 12 15.5 1.7 0.3 V+
UNITS V µA
I+
All I/Os unloaded, fSCL = 400kHz All I/Os unloaded, fSCL = 0
V+ = 3.3V V = 5.5V V+ = 2V V+ = 3.3V V+ = 5.5V
+
Standby Current Power-On Reset Voltage SCL, SDA Input Voltage Low Input Voltage High Low-Level Output Voltage Leakage Current Input Capacitance I/O_ Input Voltage Low Input Voltage High Input Leakage Current Internal Pullup Current Low-Level Output Current
ISTBY V POR VIL VIH VOL IL
µA V V V V µA pF
0.7 V ISINK = 6mA -1
+
0.4 +1 10
VIL VIH TA = -40°C to +85°C; includes internal pullup current, VIO = V+ TA = -40°C to +85°C, VIO = 0 V+ = 2V, VOL = 0.5V ISINK V+ = 3.3V, VOL = 0.5V V+ = 5V, VOL = 0.5V V+ = 3.3V, VOH = 2.4V V+ = 5V, VOH = 4.5V 8.5 17 29 34 17 32 43 41 31 1.8
0.8
V V
1 100
µA µA mA
High Output Current AD0, AD1, AD2 Input Voltage Low Input Voltage High
ISOURCE
mA
VIL VIH 0.7 V
+
0.3 V+
V V
2
_______________________________________________________________________________________
2-Wire-Interfaced 16-Bit I/O Port Expander with Interrupt
DC ELECTRICAL CHARACTERISTICS (continued)
(V+ = 2V to 5.5V, TA = -40°C to +125°C, unless otherwise noted. Typical values are at V+ = 3.3V, TA = +25°C.) (Note 1)
PARAMETER Leakage Current Input Capacitance INT Low-Level Output Current IOL VOL = 0.4V 6 mA SYMBOL CONDITIONS MIN -1 4 TYP MAX +1 UNITS µA pF
MAX7311
AC ELECTRICAL CHARACTERISTICS
(V+ = 2V to 5.5V, TA = -40°C to +125°C, unless otherwise noted.) (Note 1)
PARAMETER SCL Clock Frequency Bus Timeout Bus Free Time Between STOP and START Conditions Hold Time (Repeated) START Condition Repeated START Condition Setup Time STOP Condition Setup Time Data Hold Time Data Setup Time SCL Low Period SCL High Period SDA Fall Time Pulse Width of Spike Suppressed PORT TIMING Output Data Valid Input Data Setup Time Input Data Hold Time INTERRUPT TIMING Interrupt Valid Interrupt Reset tIV tIR Figure 9 Figure 9 30.5 2 µs µs tPV Figure 7 27 0 3 µs µs µs SYMBOL fSCL t TIMEOUT tBUF tH D , S T A tS U , S T A tSU,STO tH D , D A T tSU,DAT tL O W tH I G H tF tSP Figure 2 Figure 2 Figure 2 Figure 2 Figure 2 (Note 3) Figure 2 Figure 2 Figure 2 Figure 2 (Notes 4, 5) (Note 6) V+ < 3.3V V+ 3.3V 50 100 1.3 0.7 500 250 (Note 2) 29 1.3 0.6 0.6 0.6 0.9 CONDITIONS MIN TYP MAX 400 61 UNITS kHz ms µs µs µs µs µs ns µs µs ns ns
Note 1: All parameters are 100% production tested at TA = +25°C. Specifications over temperature are guaranteed by design. Note 2: Minimum SCL clock frequency is limited by the MAX7311 bus timeout feature, which resets the serial bus interface if either SDA or SCL is held low for a minimum of 25ms. Disable bus timeout feature for DC operation. Note 3: A master device must internally provide a hold time of at least 300ns for the SDA signal (referred to the VIL of the SCL signal) in order to bridge the undefined region SCL's falling edge. Note 4: CB = total capacitance of one bus line in pF. Note 5: The maximum tF for the SDA and SCL bus lines is specified at 300ns. The maximum fall time for the SDA output stage tF is specified at 250ns. This allows series protection resistors to be connected between the SDA and SCL pins and the SDA/SCL bus lines without exceeding the maximum specified tF. Note 6: Input filters on the SDA and SCL inputs suppress noise spikes less than 50ns. _______________________________________________________________________________________ 3
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