参数资料
| 型号： | ADG3257BRQ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 1/12页 |
| 文件大小： | 0K |
| 描述： | IC MUX QUAD 3.3/5V HS 16-QSOP |
| 标准包装： | 98 |
| 类型： | 多路复用器/多路分解器 |
| 电路： | 4 x 1:2 |
| 独立电路： | 1 |
| 电压电源： | 单电源 |
| 电源电压： | 3.3V，5V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-QSOP |
| 包装： | 管件 |
High Speed, 3.3 V/5 V Quad 2:1 Mux/Demux
(4-Bit, 1 of 2) Bus Switch
ADG3257
Rev. E
Information furnished by Analog Devices is believed to be accurate and reliable. However, no re-
sponsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
2002–2008 Analog Devices, Inc. All rights reserved.
02
91
4-
00
1
FEATURES
100 ps propagation delay through the switch
2 Ω switches connect inputs to outputs
Data rates up to 933 Mbps
Single 3.3 V/5 V supply operation
Level translation operation
Ultralow quiescent supply current (1 nA typical)
3.5 ns switching
Switches remain in the off state when power is off
Standard 3257 type pinout
APPLICATIONS
Bus switching
Bus isolation
Level translation
Memory switching/interleaving
FUNCTIONAL BLOCK DIAGRAM
1A
2A
3A
4A
S
LOGIC
1B1
1B2
2B1
2B2
3B1
3B2
4B1
4B2
BE
Figure 1.
GENERAL DESCRIPTION
The ADG3257 is a CMOS bus switch comprised of four 2:1
multiplexers/demultiplexers with high impedance outputs. The
device is manufactured on a CMOS process. This provides low
power dissipation yet high switching speed and very low on
resistance, allowing the inputs to be connected to the outputs
without adding propagation delay or generating additional
ground bounce noise.
The ADG3257 operates from a single 3.3 V/5 V supply. The
control logic for each switch is shown in Table 1. These switches
are bidirectional when on. In the off state, signal levels are blocked
up to the supplies. When the power supply is off, the switches
remain in the off state, isolating Port A and Port B.
This bus switch is suited to both switching and level translation
applications. It can be used in applications requiring level trans-
lation from 3.3 V to 2.5 V when powered from 3.3 V. Additionally,
with a diode connected in series with 5 V VDD, the ADG3257
may also be used in applications requiring 5 V to 3.3 V level
translation.
Table 1. Truth Table
BE
S
Function
H
X
Disable
L
A = B1
L
H
A = B2
PRODUCT HIGHLIGHTS
1.
0.1 ns propagation delay through switch.
2.
2 Ω switches connect inputs to outputs.
3.
Bidirectional operation.
4.
Ultralow power dissipation.
5.
16-lead QSOP package.
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| ADG3257BRQ-REEL | 功能描述:IC MUX QUAD 3.3/5V HS 16-QSOP RoHS:否 类别:集成电路 (IC) >> 逻辑 - 信号开关，多路复用器，解码器 系列:- 标准包装:48 系列:74VHC 类型:多路复用器 电路:4 x 2:1 独立电路:1 输出电流高，低:8mA，8mA 电压电源:单电源 电源电压:2 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC 包装:管件 |
| ADG3257BRQ-REEL7 | 功能描述:IC MUX QUAD 3.3/5V HS 16-QSOP RoHS:否 类别:集成电路 (IC) >> 逻辑 - 信号开关，多路复用器，解码器 系列:- 标准包装:25 系列:74HC 类型:解码器 电路:1 x 2:4 独立电路:2 输出电流高，低:5.2mA，5.2mA 电压电源:单电源 电源电压:2 V ~ 6 V 工作温度:-40°C ~ 85°C 安装类型:通孔 封装/外壳:16-DIP（0.300"，7.62mm） 供应商设备封装:16-DIP 包装:管件 |
| ADG3257BRQZ | 功能描述:IC MUX QUAD 3.3/5V HS 16-QSOP RoHS:是 类别:集成电路 (IC) >> 逻辑 - 信号开关，多路复用器，解码器 系列:- 标准包装:48 系列:74VHC 类型:多路复用器 电路:4 x 2:1 独立电路:1 输出电流高，低:8mA，8mA 电压电源:单电源 电源电压:2 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC 包装:管件 |
| ADG3257BRQZ-REEL | 功能描述:IC MUX/DEMUX QUAD 3.3-5V 16QSOP RoHS:是 类别:集成电路 (IC) >> 逻辑 - 信号开关，多路复用器，解码器 系列:- 标准包装:48 系列:74VHC 类型:多路复用器 电路:4 x 2:1 独立电路:1 输出电流高，低:8mA，8mA 电压电源:单电源 电源电压:2 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC 包装:管件 |
| ADG3257BRQZ-REEL7 | 功能描述:IC MUX/DEMUX QUAD 3.3-5V 16QSOP RoHS:是 类别:集成电路 (IC) >> 逻辑 - 信号开关，多路复用器，解码器 系列:- 标准包装:48 系列:74VHC 类型:多路复用器 电路:4 x 2:1 独立电路:1 输出电流高，低:8mA，8mA 电压电源:单电源 电源电压:2 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC 包装:管件 |
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