View MAX7317_4355030.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

19-3380; Rev 2; 4/05
10-Port SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection
General Description
The MAX7317 serial-interfaced peripheral provides microprocessors with 10 I/O ports rated to 7V. Each port can be individually configured as either an opendrain output, or an overvoltage-protected Schmitt input. The MAX7317 supports hot insertion. All port pins remain high impedance in power-down (V+ = 0V) with up to 8V asserted on them. The MAX7317 is available in 16-pin thin QFN and QSOP packages and operates in the -40C to +125C range. For a similar part with constant-current outputs and 8-bit PWM controls, refer to the MAX6966/MAX6967 data sheet.
Features
High-Speed, 26MHz SPITM-/QSPI-TM/MICROWIRETMCompatible Serial Interface 2.25V to 3.6V Operation I/O Port Inputs are Overvoltage Protected to 7V I/O Port Outputs are 7V-Rated Open Drain I/O Ports Support Hot Insertion 0.7A (typ), 1.9A (max) Standby Current Tiny 3mm x 3mm, 0.8mm High Thin QFN Package -40C to +125C Temperature Range
MAX7317
Applications
Portable Equipment Cellular Phones White Goods Industrial Controllers Automotive System Monitoring
MAX7317ATE PART
Ordering Information
TEMP RANGE -40C to +125C -40C to +125C PINPACKAGE 16 Thin QFN 3mm x 3mm x 0.8mm 16 QSOP TOP MARK ACH PKG CODE T1633-4
SPI and QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp.
MAX7317AEE
--
--
Typical Application Circuit
+3.3V
Pin Configurations
P9
P8 10
SCLK MOSI MISO CS
SCLK MAX7317 DIN DOUT CS P0 P1 P2 P3 P4 P5 P6 P7 P8 P9 DIN 13 V+ 14 SCLK 15 I/O PORTS CS 16
12
11
P7 9 8 7 P6 P5 GND P4 6 5 4 P3
C
DOUT 1 P0
TOP VIEW
MAX7317ATE
2 P1
3 P2
THIN QFN
GND
Pin Configurations continued at end of data sheet.
________________________________________________________________ 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.
10-Port SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection MAX7317
ABSOLUTE MAXIMUM RATINGS
Voltage (with respect to GND) V+ .............................................................................-0.3V to +4V SCLK, DIN, CS, DOUT .................................-0.3V to (V+ + 0.3V) P_ .............................................................................-0.3V to +8V DC Current into P_ .............................................................24mA DC Current into DOUT ........................................................10mA Total GND Current ............................................................200mA Continuous Power Dissipation (TA = +70C) 16-Pin Thin QFN (derate 14.7mW/C above +70C) .........................1176mW 16-Pin QSOP (derate 8.3mW/C above +70C)...........667mW Operating Temperature Range (TMIN to TMAX) ..............................................-40C to +125C Junction Temperature ......................................................+150C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10s) .................................+300C
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.
ELECTRICAL CHARACTERISTICS
(Typical Operating Circuit, V+ = 2.25V to 3.6V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at V+ = 3.3V, TA = +25C.) (Note 1)
PARAMETER Operating Supply Voltage Output Load External Supply Voltage P0-P9 Standby Current (Interface Idle) SYMBOL V+ VEXT All digital inputs at V+ or GND fSCLK = 26MHz; other digital inputs at V+ or GND; DOUT unloaded TA = +25C TA = TMIN to +85C TA = TMIN to TMAX TA = +25C TA = TMIN to +85C TA = TMIN to TMAX 0.7 x V+ 0.3 x V+ -0.2 (Note 2) VOLP_ ISINK = 0.5mA, output register set to 0x00 VOLPOUT = 5V VOHDOUT VOLDOUT VPOR ISOURCE = -6mA ISINK = 6mA 2 V+ - 0.3V 0.3 10.8 10 0.4 20 +0.2 385 Supply Current Input High Voltage (P0-P9, DIN, SCLK, CS) Input Low Voltage (P0-P9, DIN, SCLK, CS) Input Leakage Current (P0-P9, DIN, SCLK, CS) Input Capacitance (P0-P9, DIN, SCLK, CS Output Low Voltage (P0-P9) Output Low Short-Circuit Current (P0-P9) Output High Voltage (DOUT) Output Low Voltage (DOUT) Power-On Reset Voltage I+ 0.70 CONDITIONS MIN 2.25 TYP MAX 3.60 7 1.5 1.7 1.9 620 680 730 V V A pF V mA V V V A A UNITS V V
ISTBY
VIH VIL IIH, IIL
P0-P9 output register set to 0x01 P0-P9 output register set to 0x01
2
_______________________________________________________________________________________
10-Port SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection
TIMING CHARACTERISTICS
(Typical Operating Circuit, V+ = 2.25V to 3.6V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at V+ = 3.3V, TA = +25C.) (Note 1)
PARAMETER SCLK Clock Period SCLK Pulse-Width High SCLK Pulse-Width Low CS Fall to SCLK Rise Setup SCLK Rise to CS Rise Hold DIN Setup Time DIN Hold Time Output Data Propagation Delay DOUT Output Rise and Fall Times Minimum CS Pulse High SYMBOL tCP tCH tCL tCSS tCSH tDS tDH tDO tFT tCSW CLOAD = 20pF (Note 2) 38.4 CONDITIONS MIN 38.4 19 19 9.5 2.5 9.5 2.5 19 10 TYP MAX UNITS ns ns ns ns ns ns ns ns ns ns
MAX7317
Note 1: All parameters are tested at TA = +25C. Specifications over temperature are guaranteed by design. Note 2: Guaranteed by design.
MAX7317 Block Diagram
MAX7317
I/O REGISTER P0 P1 P2 I/O PORTS SCLK CS DIN DOUT P3 P4 P5 P6 P7 P8 P9
4-WIRE SERIAL INTERFACE
_______________________________________________________________________________________
3
10-Port SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection MAX7317
Typical Operating Characteristics
(TA = +25C, unless otherwise noted.)
PORT SINK CURRENT vs. PORT VOLTAGE
MAX7317 toc01
STANDBY CURRENT vs. TEMPERATURE
MAX7317 toc02
SUPPLY CURRENT (I+) vs. TEMPERATURE
MAX7317 toc03
15 TA = -40C PORT SINK CURRENT (mA) 12 TA = +25C TA = +85C TA = +125C 6
1.0 0.9 STANDBY CURRENT (A) V+ = 3.6V 0.8 V+ = 3.3V 0.7 0.6 0.5 0.4 V+ = 2.25V V+ = 2.7V
0.5 V+ = 3.3V V+ = 3.6V
STANDBY CURRENT (mA)
0.4
9
0.3
0.2 V+ = 2.7V 0.1 V+ = 2.25V
3
0 0 2 4 PORT VOLTAGE (V) 6 8
0 -40 -25 -10 5 20 35 50 65 80 95 110 125 TEMPERATURE (C) -40 -25 -10 5 20 35 50 65 80 95 110 125 TEMPERATURE (C)
Pin Description
PIN QSOP 1 2 QFN 15 16 NAME SCLK CS FUNCTION Serial-Clock Input. On SCLK's rising edge, data shifts into the internal shift register. On SCLK's falling edge, data is clocked out of DOUT. SCLK is active only while CS is low. Chip-Select Input. Serial data is loaded into the shift register while CS is low. The most recent 16 bits of data latch on CS's rising edge. I/O Ports. P0 to P9 can be configured as open-drain, current-sink outputs rated at 20mA maximum, or as CMOS inputs, or as open-drain outputs. Loads should be connected to a supply voltage no higher than 7V. Ground Serial-Data Output. The data into DIN is valid at DOUT 15.5 clock cycles later. Use this pin to daisy-chain several devices or allow data readback. Output is push-pull. Serial-Data Input. Data from DIN loads into the internal 16-bit shift register on SCLK's rising edge. Positive Supply Voltage. Bypass V+ to GND with a 0.047F ceramic capacitor. Exposed Pad on Package Underside. Connect to GND.
3-7, 9-13 8 14 15 16 --
1-5, 7-11 6 12 13 14 PAD
P0-P9 GND DOUT DIN V+ Exposed pad
4
_______________________________________________________________________________________
10-Port SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection
Detailed Description
The MAX7317 is a general-purpose input/output (GPIO) peripheral that provides 10 I/O ports, P0 to P9, controlled through a high-speed SPI-compatible serial interface. The 10 I/O ports can be used as inputs or open-drain outputs in any combination. Ports withstand 7V independent of the MAX7317's supply voltage whether used as inputs or outputs. Figure 1 shows the I/O port structure of the MAX7317. same value with a single command by writing the same data to multiple output registers.
MAX7317
Serial Interface
The MAX7317 communicates through an SPI-compatible 4-wire serial interface. The interface has three inputs: clock (SCLK), chip select (CS), and data in (DIN), and one output, data out (DOUT). CS must be low to clock data into or out of the device, and DIN must be stable when sampled on the rising edge of SCLK. DOUT is stable on the rising edge of SCLK. SCLK and DIN can be used to transmit data to other peripherals. The MAX7317 ignores all activity on SCLK and DIN except when CS is low. Note that the SPI protocol expects DOUT to be high impedance when the MAX7317 is not being accessed; DOUT on the MAX7317 is never high impedance. Go to www.maxim-ic.com/an1879 for ways to convert the MAX7317 to tri-state, if required.
Register Structure
The MAX7317 contains 10 internal registers, addressed as 0x00-0x09, which control the peripheral (Table 2). Two further addresses, 0x0E and 0x0F, do not store data but return the port input status when read. Four virtual addresses, 0x0A-0x0D, allow more than one register to be written with the same data to simplify software. The RAM register provides 1 byte of memory that can be used for any purpose. The no-op address, 0x20, causes no action when written or read, and is used as a dummy register when accessing one MAX7317 out of multiple cascaded devices. Initial Power-Up On power-up, all control registers are reset (Table 2). Power-up status sets I/O ports P0 to P9 high impedance, and puts the device into shutdown mode.
Control and Operation Using the 4-Wire Interface
Controlling the MAX7317 requires sending a 16-bit word. The first byte, D15 through D8, is the command, and the second byte, D7 through D0, is the data byte (Table 5).
RAM Register
The RAM register provides a byte of memory that can be used for any purpose.
GPIO Port Direction Configuration
The 10 I/O ports P0 through P9 can be configured to any combination of inputs and outputs. Ports withstand 7V independent of the MAX7317's supply voltage, whether used as inputs or outputs. Configure a port as an input by setting its output register to 0x01, which sets the port output high impedance (Table 4).
DATA FROM SHIFT REGISTER D
OUTPUT PORT REGISTER Q FF WRITE PULSE CK Q N OUTPUT PORT REGISTER DATA I/O PIN
Input Port Registers
Reading an input port register returns the logic levels at the I/O port pins. The input port registers are read only. A write to an input port register is ignored.
INPUT PORT REGISTER D FF READ PULSE CK Q Q INPUT PORT REGISTER DATA GND
Output Registers
The MAX7317 uses one 8-bit register to control each output port (Table 4). Each port can be configured as an input or open-drain output. Write 0x00 to the output register to set the port as a logic-low output, or 0x01 to set the port as a logic-high output or logic input. The 10 registers, 0x00 through 0x09, control an I/O port each (Table 4). Four pseudo-register addresses, 0x0A through 0x0D, allow groups of outputs to be set to the
Figure 1. Simplified Schematic of I/O Ports
_______________________________________________________________________________________
5
10-Port SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection MAX7317
Table 1. Register Address Map
COMMAND ADDRESS REGISTER D15 Port P0 output level Port P1 output level Port P2 output level Port P3 output level Port P4 output level Port P5 output level Port P6 output level Port P7 output level Port P8 output level Port P9 output level Write ports P0 through P9 with same output level Read port P0 output level Write ports P0 through P3 with same output level Read port P0 output level Write ports P4 through P7 with same output level Read port P4 output level Write ports P8 or P9 with same output level Read port P8 output level Read ports P7 through P0 inputs Read ports P9 and P8 inputs RAM No-op Factory reserved; do not write to this register R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W 0 1 0 1 0 1 0 1 1 1 R/W R/W R/W D14 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 D13 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 D12 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 D11 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 1 D10 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 1 D9 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 1 0 0 D8 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 1 0 1 CODE (hex) 0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0A 0x0B 0x0C 0x0D 0x0E 0x0F 0x13 0x20 0x7D
Table 2. Initial Power-Up Register Status
REGISTER Port P0 output level Port P1 output level Port P2 output level Port P3 output level Port P4 output level Port P5 output level Port P6 output level Port P7 output level Port P8 output level Port P9 output level RAM POWER-UP CONDITION Port 0 high impedance Port 1 high impedance Port 2 high impedance Port 3 high impedance Port 4 high impedance Port 5 high impedance Port 6 high impedance Port 7 high impedance Port 8 high impedance Port 9 high impedance 0x00 ADDRESS CODE (hex) 0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x13 REGISTER DATA D7 1 1 1 1 1 1 1 1 1 1 0 D6 1 1 1 1 1 1 1 1 1 1 0 D5 1 1 1 1 1 1 1 1 1 1 0 D4 1 1 1 1 1 1 1 1 1 1 0 D3 1 1 1 1 1 1 1 1 1 1 0 D2 1 1 1 1 1 1 1 1 1 1 0 D1 1 1 1 1 1 1 1 1 1 1 0 D0 1 1 1 1 1 1 1 1 1 1 0
6
_______________________________________________________________________________________
10-Port SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection
Connecting Multiple MAX7317s to the 4-Wire Bus
Multiple MAX7317s can be interfaced to a common SPI bus by connecting DIN inputs together, SCLK inputs together, and providing an individual CS per the MAX7317 device (Figure 2). This connection works regardless of the configuration of DOUT/OSC, but does not allow the MAX7317s to be read.
MAX7317
Table 3. Input Ports Register
REGISTER R/W ADDRESS CODE (hex) 0X0E REGISTER DATA D7 Port P7 0 D6 Port P6 0 D5 Port P5 0 D4 Port P4 0 D3 Port P3 0 D2 Port P2 0 D1 Port P1 Port P9 D0 Port P0 Port P8
Read input ports P7-P0
1
Read input ports P9, P8
1
0X0F
Table 4. Output Registers Format
REGISTER Port P0 level Port P0 is open-drain logic low Port P0 is open-drain logic high (high impedance without external pullup) or logic input R/W -- -- 0x00 -- 0 0 0 0 0 0 0 1 0x01 ADDRESS CODE (hex) REGISTER DATA BINARY D5 D4 D3 D2 Output P0 level and PWM 0 0 0 0 hex
D7 MSB 0
D6 0
D1 0
D0 LSB 0
0x00
Port P1 level Port P2 level Port P3 level Port P4 level Port P5 level Port P6 level Port P7 level Port P8 level Port P9 level Writes ports P0 through P9 with same level Reads port P0 level Writes ports P0 through P3 with same level Reads port P0 level Writes ports P4 through P7 with same level Reads port P4 level Write ports P8 and P9 with same level Read port P8 level
-- -- -- ---- -- -- -- -- 0 1 0 1 0 1 0 1
0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0A
MSB Port P1 level MSB Port P2 level MSB Port P3 level MSB Port P4 level MSB Port P5 level MSB Port P6 level MSB Port P7 level MSB Port P8 level MSB Port P9 level MSB Ports P0 through P9 level MSB Port P0 level
LSB LSB LSB LSB LSB LSB LSB LSB LSB LSB LSB LSB LSB LSB LSB LSB LSB
0x00 or 0x01
0x0B
MSB Ports P0 through P3 level MSB Port P0 level
0x0C
MSB Ports P4 through P7 level MSB Port P4 level
0x0D
MSB Ports P8, P9 level MSB Port P8 level
_______________________________________________________________________________________
7
10-Port SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection
Alternatively, MAX7317s can be daisy-chained by connecting the DOUT of one device to the DIN of the next, and driving SCLK and CS lines in parallel (Figure 3). This connection allows the MAX7317s to be read. Data at DIN propagates through the internal shift registers and appears at DOUT 15.5 clock cycles later, clocked out on the falling edge of SCLK. When sending commands to daisy-chained MAX7317s, all devices are accessed at the same time. An access requires (16 x n) clock cycles, where n is the number of MAX7317s connected together. The serial interface speed (maximum SCLK) is limited to 10MHz when multiple devices are daisy-chained due to the DOUT propagation delay and DIN setup time. The MAX7317 is written to using the following sequence (Figure 5): 1) Take SCLK low. 2) Take CS low. This enables the internal 16-bit shift register. 3) Clock 16 bits of data into DIN, D15 first to D0 last, observing the setup and hold times. Bit D15 is low, indicating a write command. 4) Take CS high (either while SCLK is still high after clocking in the last data bit, or after taking SCLK low). 5) Take SCLK low (if not already low).
MAX7317
If fewer or greater than 16 bits are clocked into the MAX7317 between taking CS low and taking CS high again, the MAX7317 stores the last 16 bits received, including the previous transmission(s). The general case is when n bits (where n > 16) are transmitted to the MAX7317. The last bits comprising bits {n-15} to {n}, are retained, and are parallel loaded into the 16-bit latch as bits D15 to D0, respectively (Figure 6).
Reading Device Registers
Any register data within the MAX7317 can be read by sending a logic high to bit D15. The sequence is: 1) Take SCLK low. 2) Take CS low. This enables the internal 16-bit shift register. 3) Clock 16 bits of data into DIN, D15 first to D0 last. D15 is high, indicating a read command and bits D14 through D8 contain the address of the register to read. Bits D7 to D0 contain dummy data, which is discarded. 4) Take CS high (either while SCLK is still high after clocking in the last data bit, or after taking SCLK low). Positions D7 through D0 in the shift register are now loaded with the register data addressed by bits D15 through D8. 5) Take SCLK low (if not already low). 6) Issue another read or write command, and examine the bit stream at DOUT; the second 8 bits are the contents of the register addressed by bits D14 through D8 in step 3.
Table 5. Serial-Data Format
D15 R/ W D14 MSB D13 D12 D11 ADDRESS D10 D9 D8 LSB D7 MSB D6 D5 D4 D3 D2 D1 D0 LSB DATA
CS3 CS2 C CS1 MOSI SCLK CS1 DIN SCLK
MAX7317
CS2 DIN SCLK
MAX7317
CS3 DIN SCLK
MAX7317
Figure 2. MAX7317 Multiple CS Connection 8 _______________________________________________________________________________________
10-Port SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection MAX7317
MOSI CS C SCLK
DIN CS
DOUT
DIN CS
DOUT
DIN CS
DOUT
MAX7317
SCLK SCLK
MAX7317
SCLK
MAX7317
MISO
Figure 3. MAX7317 Daisy-Chain Connection
CS tCSW tCL tCSS SCLK tCH tCP tCSH
tDS tDH DIN D15 D14 D1 D0
tDO
DOUT
D15
Figure 4. Timing Diagram
CS
SCLK
D15 =0
DIN
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
DOUT
.
D15 = 0
Figure 5. 16-Bit Write Transmission to the MAX7317 _______________________________________________________________________________________ 9
10-Port SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection MAX7317
CS
SCLK
BIT 1 BIT 2
DIN
N-15
N-14
N-13
N-12
N-11
N-10
N-9
N-8
N-7
N-6
N-5
N-4
N-3
N-2
N-1
N
DOUT
N-31
N-30
N-29
N-28
N-27
N-26
N-25
N-24
N-23
.
N-22
N-21
N-20
N-19
N-18
N-17
N-16
Figure 6. Transmission of More than 16 Bits to the MAX7317
Applications Information
Hot Insertion
The I/O ports P0-P9 remain high impedance with up to 8V asserted on them when the MAX7317 is powered down (V+ = 0V). The MAX7317 can therefore be used in hot-swap applications.
improve noise immunity in applications where power consumption is less critical, or where a faster rise time is needed for a given capacitive load.
Power-Supply Considerations
The MAX7317 operates with a power-supply voltage of 2.25V to 3.6V. Bypass the power supply to GND with a 0.047F ceramic capacitor as close to the device as possible. For the QFN version, connect the underside exposed pad to GND.
SPI Routing Considerations
The MAX7317's SPI interface is guaranteed to operate at 26Mbps on a 2.5V supply, and on a 3.3V supply typically operates at 35Mbps. This means that transmission line issues should be considered when the interface connections are longer than 100mm, particularly with higher supply voltages. Avoid running long adjacent tracks for SCLK, DIN, and CS without interleaving GND traces; otherwise, the signals may cross-couple, giving false clock or chip-select transitions. Ringing may manifest itself as communication issues, often intermittent, typically due to double clocking caused by ringing at the SCLK input. Fit a 1k to 10k parallel termination resistor to either GND or V+ at the DIN, SCLK, and CS inputs to damp ringing for moderately long interface runs. Use line-impedance-matching terminations when making connections between boards.
Chip Information
TRANSISTOR COUNT: 14,865 PROCESS: BiCMOS
Pin Configurations (continued)
TOP VIEW
SCLK 1 CS 2 P0 3 P1 4 P2 5 P3 6 P4 7 GND 8 16 V+ 15 DIN 14 DOUT
Output-Level Translation
The open-drain output architecture allows the ports to level translate the outputs to higher or lower voltages than the MAX7317 supply. An external pullup resistor can be used on any output to convert the high-impedance logic-high condition to a positive voltage level. The resistor can be connected to any voltage up to 7V. When using a pullup on a constant-current output, select the resistor value to sink no more than a few hundred A in logic-low condition. This ensures that the current sink output saturates close to GND. For interfacing CMOS inputs, a pullup resistor value of 220k is a good starting point. Use a lower resistance to
10
MAX7317AEE
13 P9 12 P8 11 P7 10 P6 9 P5
QSOP
______________________________________________________________________________________
10-Port SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.)
QSOP.EPS
MAX7317
PACKAGE OUTLINE, QSOP .150", .025" LEAD PITCH
21-0055
E
1
1
______________________________________________________________________________________
11
10-Port SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection MAX7317
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.)
12x16L QFN THIN.EPS
E
1 2
D2 b
0.10 M C A B
D D/2
D2/2
E/2
E2/2
C L
E
(NE - 1) X e
E2
L
C L
e
k (ND - 1) X e
C L
0.10 C 0.08 C A A2 A1 L
C L
L
e
e
PACKAGE OUTLINE 12, 16L, THIN QFN, 3x3x0.8mm
21-0136
PKG REF. A b D E e L N ND NE A1 A2 k 0.25 0 MIN. 0.70 0.20 2.90 2.90 0.45
12L 3x3 NOM. 0.75 0.25 3.00 3.00 0.50 BSC. 0.55 12 3 3 0.02 0.20 REF 0.05 0 0.25 0.65 0.30 MAX. 0.80 0.30 3.10 3.10 MIN. 0.70 0.20 2.90 2.90
16L 3x3 NOM. 0.75 0.25 3.00 3.00 0.50 BSC. 0.40 16 4 4 0.02 0.20 REF 0.05 0.50 MAX. 0.80 0.30 3.10 3.10 PKG. CODES T1233-1 T1233-3 T1633-1 T1633-2 T1633F-3 T1633-4
EXPOSED PAD VARIATIONS
D2 MIN. 0.95 0.95 0.95 0.95 0.65 0.95 NOM. 1.10 1.10 1.10 1.10 0.80 1.10 MAX. 1.25 1.25 1.25 1.25 0.95 1.25 MIN. 0.95 0.95 0.95 0.95 0.65 0.95 E2 NOM. MAX. 1.10 1.10 1.10 1.10 0.80 1.10 1.25 1.25 1.25 1.25 0.95 1.25 PIN ID 0.35 x 45 0.35 x 45 0.35 x 45 0.35 x 45 JEDEC WEED-1 WEED-1 WEED-2 WEED-2
DOWN BONDS ALLOWED
NO YES NO YES N/A NO
0.225 x 45 WEED-2 0.35 x 45 WEED-2
NOTES: 1. DIMENSIONING & TOLERANCING CONFORM TO ASME Y14.5M-1994. 2. ALL DIMENSIONS ARE IN MILLIMETERS. ANGLES ARE IN DEGREES. 3. N IS THE TOTAL NUMBER OF TERMINALS. 4. THE TERMINAL #1 IDENTIFIER AND TERMINAL NUMBERING CONVENTION SHALL CONFORM TO JESD 95-1 SPP-012. DETAILS OF TERMINAL #1 IDENTIFIER ARE OPTIONAL, BUT MUST BE LOCATED WITHIN THE ZONE INDICATED. THE TERMINAL #1 IDENTIFIER MAY BE EITHER A MOLD OR MARKED FEATURE. 5. DIMENSION b APPLIES TO METALLIZED TERMINAL AND IS MEASURED BETWEEN 0.20 mm AND 0.25 mm FROM TERMINAL TIP. 6. ND AND NE REFER TO THE NUMBER OF TERMINALS ON EACH D AND E SIDE RESPECTIVELY. 7. DEPOPULATION IS POSSIBLE IN A SYMMETRICAL FASHION. 8. COPLANARITY APPLIES TO THE EXPOSED HEAT SINK SLUG AS WELL AS THE TERMINALS. 9. DRAWING CONFORMS TO JEDEC MO220 REVISION C.
PACKAGE OUTLINE 12, 16L, THIN QFN, 3x3x0.8mm
21-0136
E
2
2
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.
12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 (c) 2005 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products, Inc.

▲Up To Search▲

Price & Availability of MAX7317

	To Download MAX7317 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .