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參數(shù)資料
| 型號： | ADG3242BRJ-R2 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 4/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC SW BUS CTRL 2.5/3.3V SOT23-8 |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 類型： | 總線開關(guān) |
| 電路： | 2 x 1:1 |
| 獨立電路： | 1 |
| 電壓電源： | 單電源 |
| 電源電壓： | 2.5V, 3.3V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | SOT-23-8 |
| 供應(yīng)商設(shè)備封裝： | SOT-23-8 |
| 包裝： | 剪切帶 (CT) |
| 其它名稱： | ADG3242BRJ-R2CT |
ADG3242
Rev. A | Page 12 of 16
BUS SWITCH APPLICATIONS
MIXED VOLTAGE OPERATION, LEVEL
TRANSLATION
Bus switches provide an ideal solution for interfacing between
mixed voltage systems. The ADG3242 is suitable for applications
where voltage translation from 3.3 V technology to a lower voltage
technology is needed. This device translates from 3.3 V to 1.8 V,
from 2.5 V to 1.8 V, or from a bidirectional 3.3 V directly to 2.5 V.
Figure 28 shows a block diagram of a typical application in which a
user needs to interface between a 3.3 V ADC and a 2.5 V micro-
processor. The microprocessor does not have 3.3 V tolerant inputs,
therefore, placing the ADG3242 between the two devices allows
the devices to communicate easily. The bus switch directly connects
the two blocks, therefore introducing minimal propagation delay,
timing skew, or noise.
3.3V ADC
2.5V
3.3V
2.5V
MICROPROCESSOR
A
D
G3242
3.3V
04
30
9-
02
7
Figure 28. Level Translation Between a 3.3 V ADC and a 2.5 V Microprocessor
3.3 V TO 2.5 V TRANSLATION
When VCC is 3.3 V (SEL = 3.3 V) and the input signal range is
0 V to VCC, the maximum output signal is clamped to within a
voltage threshold below the VCC supply. In this case, the output
is limited to 2.5 V, as shown in Figure 30. This device can be used
for translation from 2.5 V to 3.3 V devices and also between two
3.3 V devices.
ADG3242
2.5V
3.3V
2.5V
3.3V
04
30
9-
02
8
Figure 29. 3.3 V to 2.5 V Voltage Translation, SEL = VCC
VIN
2.5V
VOUT
0V
3.3V
SWITCH
INPUT
SW
IT
C
H
OU
T
P
U
T
3.3V SUPPLY
SEL = 3.3V
04
30
9-
02
9
Figure 30. 3.3 V to 2.5 V Voltage Translation, SEL = VCC
2.5 V TO 1.8 V TRANSLATION
When VCC is 2.5 V (SEL = 2.5 V) and the input signal range is
0 V to VCC, the maximum output signal is also clamped within
a voltage threshold below the VCC supply. In this case, the output
is limited to approximately 1.8 V, as shown in Figure 32.
ADG3242
1.8V
2.5V
04
30
9-
03
0
Figure 31. 2.5 V to 1.8 V Voltage Translation, SEL = 2.5 VCC
VIN
1.8V
VOUT
0V
2.5V
SWITCH
INPUT
SW
IT
C
H
OU
T
P
U
T
2.5V SUPPLY
SEL = 2.5V
04
30
9-
03
1
Figure 32. 2.5 V to 1.8 V Voltage Translation, SEL = VCC
3.3 V TO 1.8 V TRANSLATION
The ADG3242 offers the option of interfacing between a 3.3 V
device and a 1.8 V device. This is possible through use of the SEL
pin. The SEL pin is an active low control pin. SEL activates inter-
nal circuitry in the ADG3242 that allows voltage translation
between 3.3 V devices and 1.8 V devices.
When VCC is 3.3 V and the input signal range is 0 V to VCC, the
maximum output signal is clamped to 1.8 V, as shown in Figure 34.
To do this, the SEL pin must be tied to Logic 0. If SEL is unused,
it can be tied directly to VCC.
ADG3242
1.8V
3.3V
04
30
9-
0
32
Figure 33. 3.3 V to 1.8 V Voltage Translation, SEL = 0 V
VIN
1.8V
VOUT
0V
3.3V
SWITCH
INPUT
SW
IT
C
H
OU
T
P
U
T
3.3V SUPPLY
SEL = 0V
04
30
9-
03
3
Figure 34. 3.3 V to 1.8 V Voltage Translation, SEL = 0 V
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADG3243BRJ-R2 | IC SW BUS CTRL 2.5/3.3V SOT23-8 |
| ADG3245BRU | IC SW BUS 2.5/3.3V 8BIT 20TSSOP |
| ADG3246BCPZ-REEL7 | IC SW BUS 10BIT 2.5/3.3V 24LFCSP |
| ADG3247BRU | IC SW BUS 2.5/3.3V 16BIT 38TSSOP |
| ADG3257BRQ-REEL7 | IC MUX QUAD 3.3/5V HS 16-QSOP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADG3242BRJ-REEL | 制造商:AD 制造商全稱:Analog Devices 功能描述:2.5 V/3.3 V, 2-Bit Common Control Level Translator Bus Switch |
| ADG3242BRJ-REEL7 | 制造商:Analog Devices 功能描述:Bus Switch 1-Element CMOS 2-IN 8-Pin SOT-23 T/R 制造商:Rochester Electronics LLC 功能描述:2.5/3.3V,2 BIT COMMON CTRL,BUS SWITCH IC - Tape and Reel |
| ADG3242BRJZ | 制造商:Analog Devices 功能描述: |
| ADG3242BRJZ-REEL7 | 功能描述:IC SW BUS CTRL 2.5/3.3V SOT23-8 RoHS:是 類別:集成電路 (IC) >> 邏輯 - 信號開關(guān)，多路復(fù)用器，解碼器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:74LVC 類型:解碼器/多路分解器 電路:1 x 2:4 獨立電路:2 輸出電流高，低:24mA，24mA 電壓電源:單電源 電源電壓:1.65 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:16-SO 包裝:Digi-Reel® 其它名稱:296-28947-6 |
| ADG3243 | 制造商:AD 制造商全稱:Analog Devices 功能描述:2.5 V/3.3 V, 2-Bit, Individual Control Level Translator Bus Switch |
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