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參數(shù)資料
| 型號： | TPS9125PW |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 5 V/3 V SIM SUPPLY AND LEVEL SHIFTERS |
| 中文描述： | 5伏/ 3伏SIM卡供應(yīng)及電平轉(zhuǎn)換器 |
| 文件頁數(shù)： | 4/24頁 |
| 文件大小： | 338K |
| 代理商： | TPS9125PW |
TPS9125
5 V/3 V SIMSUPPLY AND LEVEL SHIFTERS
SLVS244A – SEPTEMBER 1999 – REVISED NOVEMBER 1999
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
detailed description (continued)
level shifters
The level shifters on TSP9125, when operating in the 5-V mode, convert a 3-V compatible logic signal from a
digital control chip (SIM Controller) into a 5-V compatible logic signal for the SIM Card.
Operating in the 3-V mode, the level shifters are disabled and only pass the signal through.
The level shifters for reset and clock signal are unidirectional (RST to SIMRST, CLK to SIMCLK). The level
shifter for the data signal is bidirectional, enabling signal exchange in both directions (DATA to SIMDATA and
SIMDATA to DATA).
During power up and power down of the TSP9125, the voltage level on the SIMRST, SIMCLK, and SIMDATA
terminals is kept below 0.4 V for currents less than 1 mA flowing into the TSP9125, provided V
DD
is applied.
pullup resistors
The DATA and SIMDATA I/O pullup resistors are integrated in the device. The DATA resistor is 20 k
and the
SIMDATA resistor is 10 k
.
oscillator
An integrated RC oscillator provides the charge pump with a nominal clock frequency of 800 kHz.
voltage reference
An integrated bandgap reference provides a reference voltage of 1.192 V to the charge pump to control and
regulate the output voltage.
ESD protection
In a cellular telephone (GSM phone) the SIMRST, SIMCLK, and SIMDATA terminals are connected directly to
the contacts of the SIM reader. This means they are accessible from the outside and therefore require increased
ESD protection. The terminals withstand 10 kV ESD when tested according to human body model (HBM),
100 pF through 1500
.
DISSIPATION RATING TABLE
TA < 25
°
C
POWER RATING
PACKAGED
OPERATING FACTOR
ABOVE TA = 25
°
C
5.56 mW/
°
C
TA = 70
°
C
POWER RATING
PW
556 mW
306 mW
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS9125PWR | 制造商:Rochester Electronics LLC 功能描述:SIM-CARD INTERFACE - Bulk 制造商:Texas Instruments 功能描述: |
| TPS92 | 制造商:Vishay Sprague 功能描述:SEMICONDUCTOR TRANSISTOR |
| TPS92001 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:GENERAL PURPOSE LED LIGHTING PWM CONTROLLER |
| TPS92001D | 功能描述:LED照明驅(qū)動器 Gen Pur LED Lighting PWM Controller RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
| TPS92001DGK | 功能描述:LED照明驅(qū)動器 Gen Pur LED Lighting PWM Controller RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
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