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鍙冩暩(sh霉)璩囨枡
| 鍨嬭櫉锛� | MAX7321ATE+T |
| 寤犲晢锛� | Maxim Integrated Products |
| 鏂囦欢闋佹暩(sh霉)锛� | 6/15闋� |
| 鏂囦欢澶�?銆�?/td> | 0K |
| 鎻忚堪锛� | IC I/O EXPANDER I2C 8B 16TQFN-EP |
| 鐢�(ch菐n)鍝佸煿瑷�(x霉n)妯″锛� | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 妯�(bi膩o)婧�(zh菙n)鍖呰锛� | 2,500 |
| 鎺ュ彛锛� | I²C |
| 杓稿叆/杓稿嚭鏁�(sh霉)锛� | 8 |
| 涓柗杓稿嚭锛� | 鏄� |
| 闋荤巼 - 鏅傞悩锛� | 400kHz |
| 闆绘簮闆诲锛� | 1.71 V ~ 5.5 V |
| 宸ヤ綔婧害锛� | -40°C ~ 125°C |
| 瀹夎椤炲瀷锛� | 琛ㄩ潰璨艰 |
| 灏佽/澶栨锛� | 16-WFQFN 瑁搁湶鐒婄洡 |
| 渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁濓細 | 16-TQFN-EP锛�3x3锛� |
| 鍖呰锛� | 甯跺嵎 (TR) |
| 鍖呮嫭锛� | POR |
MAX7321
I2C Port Expander with 8 Open-Drain I/Os
14
Maxim Integrated
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 per 20mA of load current;
for example, a 5V, 330mW relay draws 66mA, and
therefore, requires four paralleled outputs. Any combi-
nation of outputs can be used as part of a load-sharing
design because any combination of ports can be set or
cleared at the same time by writing the MAX7321. Do
not exceed a total sink current of 100mA for the device.
The MAX7321 must be protected from the negative
voltage transient generated when switching off induc-
tive loads (such as relays), by connecting a reverse-
biased diode across the inductive load. Choose the
peak current for the diode to be greater than the induc-
tive load鈥檚 operating current.
Power-Supply Considerations
The MAX7321 operates with a supply voltage of +1.71V
to +5.5V over the -40掳C to +125掳C temperature range.
Bypass the supply to GND with a ceramic capacitor of
at least 0.047F as close to the device as possible. For
the TQFN version, additionally connect the exposed
pad to GND.
Issue: I2C Flag Clearing
De-Assertion Anomaly
Description of Problem
The MAX7321 clears data stored in the interrupt flag
and deasserts the corresponding interrupt only when
the I2C master reads a different I2C slave on the same
bus.
Workaround
To keep the interrupt flag data valid, the user must read
the MAX7321 device BEFORE any other device on the
I2C bus, after a pending interrupt. This limits the bus to
only one MAX7321 device.
Pin Configurations (continued)
MAX7321
P2
P7
P6
P5
P4
V+
+3.3V
+5V
C
SCL
SDA
SCL
AD0
P1
P0
SDA
P3
I/O
AD2
GND
I/O
RST
INT
0.047
F
Typical Application Circuit
15
16
14
13
5
6
7
P1
P2
8
AD2
P7
P6
SCL
13
V+
4
12
10
9
AD0
RST
P5
P4
GND
P3
MAX7321
P0
INT
2
11
SDA
TQFN
TOP VIEW
*EP
*EXPOSED PAD, CONNECTED TO GND
+
Package Information
For the latest package outline information and land patterns (foot-
prints), go to www.maximintegrated.com/packages. Note that a
鈥�+鈥�, 鈥�#鈥�, or 鈥�-鈥� in the package code indicates RoHS status only.
Package drawings may show a different suffix character, but the
drawing pertains to the package regardless of RoHS status.
PACKAGE
TYPE
PACKAGE
CODE
OUTLINE NO.
LAND
PATTERN NO.
16 QSOP
E16-4
16 TQFN-EP
T1633-4
鐩搁棞(gu膩n)PDF璩囨枡 |
PDF鎻忚堪 |
|---|---|
| MAX7320AEE+T | IC I/O EXPANDER I2C 8B 16QSOP |
| ATMEGA8U2-MUR | MCU AVR 8K FLASH 16MHZ 32VQFN |
| MAX7325ATG+T | IC I/O EXPANDER I2C 8B 24TQFN-EP |
| IS82C55A96 | IC I/O EXPANDER 24B 44PLCC |
| IS82C55A | IC I/O EXPANDER 24B 44PLCC |
鐩搁棞(gu膩n)浠ｇ悊鍟�/鎶€琛�(sh霉)鍙冩暩(sh霉) |
鍙冩暩(sh霉)鎻忚堪 |
|---|---|
| MAX7321AUP | 鍒堕€犲晢:MAXIM 鍒堕€犲晢鍏ㄧū:Maxim Integrated Products 鍔熻兘鎻忚堪:I2C Port Expander with 8 Open-Drain I/Os |
| MAX7322 | 鍒堕€犲晢:MAXIM 鍒堕€犲晢鍏ㄧū:Maxim Integrated Products 鍔熻兘鎻忚堪:I2C Port Expander with 4 Push-Pull Outputs |
| MAX7322AEE | 鍔熻兘鎻忚堪:鎺ュ彛-I/O鎿�(ku貌)灞曞櫒 RoHS:鍚� 鍒堕€犲晢:NXP Semiconductors 閭忚集绯诲垪: 杓稿叆/杓稿嚭绔暩(sh霉)閲�: 鏈€澶у伐浣滈牷鐜�:100 kHz 宸ヤ綔闆绘簮闆诲:1.65 V to 5.5 V 宸ヤ綔婧害鑼冨湇:- 40 C to + 85 C 瀹夎棰�(f膿ng)鏍�:SMD/SMT 灏佽 / 绠遍珨:HVQFN-16 灏佽:Reel |
| MAX7322AEE+ | 鍔熻兘鎻忚堪:鎺ュ彛-I/O鎿�(ku貌)灞曞櫒 I2C Port Expander w/4 P-P Out & 4 In RoHS:鍚� 鍒堕€犲晢:NXP Semiconductors 閭忚集绯诲垪: 杓稿叆/杓稿嚭绔暩(sh霉)閲�: 鏈€澶у伐浣滈牷鐜�:100 kHz 宸ヤ綔闆绘簮闆诲:1.65 V to 5.5 V 宸ヤ綔婧害鑼冨湇:- 40 C to + 85 C 瀹夎棰�(f膿ng)鏍�:SMD/SMT 灏佽 / 绠遍珨:HVQFN-16 灏佽:Reel |
| MAX7322AEE+T | 鍔熻兘鎻忚堪:鎺ュ彛-I/O鎿�(ku貌)灞曞櫒 I2C Port Expander w/4 P-P Out & 4 In RoHS:鍚� 鍒堕€犲晢:NXP Semiconductors 閭忚集绯诲垪: 杓稿叆/杓稿嚭绔暩(sh霉)閲�: 鏈€澶у伐浣滈牷鐜�:100 kHz 宸ヤ綔闆绘簮闆诲:1.65 V to 5.5 V 宸ヤ綔婧害鑼冨湇:- 40 C to + 85 C 瀹夎棰�(f膿ng)鏍�:SMD/SMT 灏佽 / 绠遍珨:HVQFN-16 灏佽:Reel |
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