参数资料
| 型号： | SX1508IULTRT |
| 厂商： | Semtech |
| 文件页数： | 2/41页 |
| 文件大小： | 0K |
| 描述： | IC GPIO EXPANDER I2C 8CH 20QFN |
| 特色产品： | SX1508/SX1509 GPIO Expanders |
| 标准包装： | 1 |
| 接口： | I²C |
| 输入/输出数： | 8 |
| 中断输出： | 是 |
| 频率 - 时钟： | 400kHz |
| 电源电压： | 1.2 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-UFQFN 裸露焊盘 |
| 供应商设备封装： | 20-QFN-UT（3x3） |
| 包装： | 标准包装 |
| 包括： | LED 驱动器 / 小键盘引擎 |
| 其它名称： | SX1508IULDKR |
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ADVANCED COMMUNICATIONS & SENSING
Rev 1 – 30
th Oct. 2009
10
www.semtech.com
SX1507/SX1508/SX1509
World’s Lowest Voltage Level Shifting GPIO
with LED Driver and Keypad Engine
Symbol
Description
Conditions
Min
Typ
Max
Unit
Interface complies with slave F/S mode I
2C interface as described by Philips I2C specification version 2.1
dated January, 2000. Please refer to that document for more detailed I
2C specifications.
VOL
Low level output voltage
-
-0.4
-
0.3
V
VDDM >= 2V
-
8
IOLM
Low level output sink current
VDDM < 2V
-
4
mA
VCC1,2 >= 2V
0.7*
VDDM
-
3.6
VIHMR
High level input voltage
VCC1,2 < 2V
0.8*
VDDM
-
3.6
V
VCC1,2 >= 2V
-0.4
-
0.3*
VDDM
VILM
Low level input voltage
VCC1,2 < 2V
-0.4
-
0.2*
VDDM
V
fSCL
SCL clock frequency
-
400
kHz
tHD;STA
Hold time (repeated) START
condition
-
0.6
-
s
tLOW
LOW period of the SCL clock
-
1.3
-
s
tHIGH
HIGH period of the SCL clock
-
0.6
-
s
tSU;STA
Set-up time for a repeated
START condition
-
0.6
-
s
tHD;DAT
Data hold time
-
0
(4)
-
0.9
(5)
s
tSU;DAT
Data set-up time
-
100
(6)
-
ns
tr
Rise time of both SDA and SCL
-
20+0.1Cb
(7)
-
300
ns
tf
Fall time of both SDA and SCL
-
20+0.1Cb
(7)
-
300
ns
tSU;STO
Set-up time for STOP condition
-
0.6
-
s
tBUF
Bus free time between a STOP
and START condition
-
1.3
-
s
Cb
Capacitive load for each bus line
-
400
pF
VnL
Noise margin at the LOW level
for each connected device
(including hysteresis)
-
0.1*
VDDM
-
V
VnH
Noise margin at the HIGH level
for each connected device
(including hysteresis)
-
0.2*
VDDM
-
V
tSP
Pulse width of spikes
suppressed by the input filter
-
50
ns
Miscellaneous
RPULL
Programmable pull-up/down
resistors for IO[0-7]
-
42
-
k
Internal
1.3
2
2.6
fOSC
Oscillator frequency
External from OSCIN
-
2.6
MHz
(1) Assuming no load connected to outputs and inputs fixed to VCC1,2 or GND.
(2) Can be increased by tying together and driving simultaneously several I/Os.
(3) All values referred to VIHMR min and VILM max levels.
(4) A device must internally provide a hold time of at least 300ns for the SDA signal (referred to VIHMR min) to bridge the undefined region of
the falling edge of SCL.
(5) The maximum tHD;DAT has only to be met if the device does not stretch the LOW period (tLOW) of the SCL signal.
(6) A Fast-mode I
2C-bus device can be used in a Standard-mode I2C-bus system, but the requirement t
SU;DAT
≥ 250 ns must then be met.
This will automatically be the case if the device does not stretch the LOW period of the SCL signal.
If such a device does stretch the LOW period of the SCL signal, it must output the next data bit to the SDA line tr max+ tSU;DAT = 1000 + 250
= 1250 ns (according to the Standard-mode I2C-bus specification) before the SCL line is released.
(7) Cb = total capacitance of one bus line in pF. If mixed with Hs-mode devices, faster fall-times are allowed.
(8) With RegHighInput bit enabled (VCCx min =1.65V), else 3.6V (VCCx min = 1.2V)
Table 6 – Electrical Specifications
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| SX1508QB | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:World’s Lowest Voltage Level Shifting GPIO with LED Driver and Keypad Engine |
| SX1508QBIULTRT | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:World’s Lowest Voltage Level Shifting GPIO with LED Driver and Keypad Engine |
| SX1509BEVK | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:World’s Lowest Voltage Level Shifting GPIO with LED Driver and Keypad Engine |
| SX1509BIULTRT | 制造商:Semtech Corporation 功能描述: 制造商:Semtech Corporation 功能描述:IC GPIO EXPANDER I2C 16CH 28QFN 制造商:Semtech Corporation 功能描述:Low Voltage Level Shifting GPIO with LED Driver and Keypad Engine 制造商:Semtech Corporation 功能描述:16 CHAN LOW VOLT I2C GPIO +PWM |
| SX1509BULTRT | 功能描述:IC GPIO EXPANDER I2C 16CH 28QFN RoHS:是 类别:集成电路 (IC) >> 接口 - I/O 扩展器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:74 系列:- 接口:I²C，JTAG 输入/输出数:9 中断输出:无 频率 - 时钟:400kHz 电源电压:2.7 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:20-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:20-TSSOP 包装:管件 包括:EEPROM |
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