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參數(shù)資料
| 型號(hào)： | ISL88694IH5-TK |
| 廠商： | Intersil |
| 文件頁數(shù)： | 6/7頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC SMBUS ACCELERATOR SOT23-5 |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 類型： | SMBus 加速器 |
| Tx/Rx類型： | I²C Logic |
| 電源電壓： | 2.7 V ~ 5.5 V |
| 電流 - 電源： | 80µA |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | SC-74A，SOT-753 |
| 供應(yīng)商設(shè)備封裝： | SOT-5 |
| 包裝： | 帶卷 (TR) |
6
FN8239.1
January 21, 2005
ISL88694 Operation
To improve the operation of the SMBus where larger bus
capacitance exists, the ISL88694 provides active pull-up
using switched current sources. When the bus is idle and
both lines are HIGH, a standby pull-up current of 100A is
used to maintain the signal level while minimizing power
consumption. When either of the two signals is pulled LOW,
an active pull-up current of 275A maintains a good VOL
noise margin.
When the bus line is released, it is pulled high by the
ISL88694 active current until the voltage exceeds the
VTRIPL level for a period of time. This voltage-time
combination filters out noise on the signal line. Once the
ISL88694 detects a valid rising edge, a 2.2mA boost current
pulls the bus line high very quickly (see Figure 8). This boost
current turns off when the input level reaches the VTRIPH
threshold and the pull-up current returns to the active level. If
both inputs are HIGH, the pull-up current drops to the
standby level of 100A.
FIGURE 8. ISL88694 SMBus SYSTEM BOOST PULL-UP
COMPARED TO RESISTOR PULL-UP (VDD =
5.5V).
FIGURE 9. ISL88694 SMBus SYSTEM BOOST PULL-UP
COMPARED TO RESISTOR PULL-UP (VDD =
2.7V).
FIGURE 10. NOISE SUPPRESSION. BOOST CURRENT
APPLIED WHEN INPUT SIGNAL EXCEEDS 20Vns
(TYPICAL).
VTRIPL
With RC
Pullup
With ISL88694 SMA
VTRIPH
R=15.8K
C= 200pF
VTRIPL
With RC
Pullup
With ISL88694 SMA
VTRIPH
R=15.8K
C= 200pF
VTRIPL
Gnd
t
SMBus1
>20Vns
SMBus2
VDD
With SMA
Without SMA
(Typical)
VTRIPH
ISL88694
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ISL88694IH5Z | 制造商:Intersil Corporation 功能描述:SMBUS ACCELERATOR 5PIN SOT-23 - Tape and Reel |
| ISL88694IH5Z-TK | 功能描述:I2C 接口集成電路 ISL88694IH5Z SMBUS S IGNAL BOOSTER 5LD RoHS:否 制造商:NXP Semiconductors 電源電壓-最大:5.5 V 電源電壓-最小:2.3 V 最大工作頻率:400 KHz 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-16 |
| ISL88705EVAL1 | 功能描述:EVAL BOARD 1 FOR ISL88705 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評(píng)估演示板和套件 系列:* 標(biāo)準(zhǔn)包裝:1 系列:PSoC® 主要目的:電源管理，熱管理 嵌入式:- 已用 IC / 零件:- 主要屬性:- 次要屬性:- 已供物品:板，CD，電源 |
| ISL88705IB846Z | 功能描述:IC SUPERVISOR 4.64V 8-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:簡單復(fù)位/加電復(fù)位 監(jiān)視電壓數(shù)目:1 輸出:開路漏極或開路集電極 復(fù)位:低有效 復(fù)位超時(shí):最小為 600 ms 電壓 - 閥值:3.8V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應(yīng)商設(shè)備封裝:SOT-23-5 包裝:帶卷 (TR) |
| ISL88705IB846Z-TK | 功能描述:IC SUPERVISOR MPU 4.64V 8-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:簡單復(fù)位/加電復(fù)位 監(jiān)視電壓數(shù)目:1 輸出:開路漏極或開路集電極 復(fù)位:低有效 復(fù)位超時(shí):最小為 600 ms 電壓 - 閥值:3.8V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應(yīng)商設(shè)備封裝:SOT-23-5 包裝:帶卷 (TR) |
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