Datasheet > MAX14978

MAX14978

更新时间： 2024-11-15 11:18:35

品牌	Logo	应用领域
美信 - MAXIM		开关
页数	文件大小	规格书
15页	1853K
描述
SuperSpeed USB Passive Switch (Low/Full/Hi/SuperSpeed)

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MAX14978 数据手册

19-5573; Rev 1; 4/11

SuperSpeed USB Passive Switch

(Low/Full/Hi/SuperSpeed)

General Description

Features

The MAX14978 high-performance, passive analog switch

is ideal for switching Hi-Speed USB and SuperSpeed USB

data between one source and two loads, or vice versa. The

device can be used in desktop and notebook applications

where SuperSpeed USB ports are in limited supply. The

device consists of two sets of analog switches with one

set used for USB low-speed, full-speed, and Hi-Speed

signals and the second set used for USB SuperSpeed.

The device operates from a single +3.3V supply.

S Designed for SuperSpeed USB Applications:

Low/Full/Hi-Speed (1.5/12/480Mbps)

SuperSpeed (5.0Gbps)

S Superior Return Loss and Insertion Loss for

SuperSpeed Analog Switches

S Low Quiescent Current: 36µA (typ)

S All Link Training is Preserved (SuperSpeed)

S LVCMOS Control (1.4V P V P 3.6V)

The device features low insertion loss for all speeds. It

has Q6kV Human Body Model (HBM) ESD protection

on all I/O pins. In addition, the low/full/Hi-Speed COM_

ports have ESD protection to Q15kV HBM and Q8kV IEC

61000-4-2 contact.

S Operation from a Single +3.3V Power Supply

S Small, 3.5mm x 9.0mm, 42-Pin TQFN Package

The device is available in a small, 3.5mm x 9.0mm,

42-pin TQFN package and is specified over the extend-

ed -40NC to +85NC temperature range.

Ordering Information

PART

TEMP RANGE

PIN-PACKAGE

MAX14978ETO+

-40NC to +85NC

42 TQFN-EP*

Applications

Desktop PCs

+Denotes a lead(Pb)-free/RoHS-compliant package.

*EP = Exposed pad.

Laptop PCs

Industrial USB Switching

Typical Operating Circuit

+3.3V

USB SWITCH

CONTROLLER

0.1µF

SEL1 SEL2

NCD+

D+

NCD-

NOD+

NOD-

D-

SUPERSPEED

USB

PORT1

D+

D-

COMD+

COMD-

Tx+

Tx-

Rx+

Rx-

SUPERSPEED

USB

CONTROLLER

MAX14978

Tx+

Tx-

Rx+

Rx-

COM0+

COM0-

COM1+

COM1-

NC0+

NC0-

NC1+

NC1-

D+

D-

SUPERSPEED

USB

PORT2

NO0+

NO0-

NO1+

NO1-

Tx+

Tx-

Rx+

Rx-

GND

_______________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...15

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与MAX14978相关器件

型号	品牌	获取价格	描述	数据表
MAX14978ETO	MAXIM	获取价格	SuperSpeed USB Passive Switch (Low/Full/Hi/SuperSpeed)
MAX14979E	MAXIM	获取价格	High-Bandwidth, ±15kV ESD Protection LVDS Swi
MAX14979E	ADI	获取价格	宽带、具有±15kV ESD保护的LVDS开关
MAX14979E_11	MAXIM	获取价格	High-Bandwidth, ±15kV ESD Protection LVDS Swi
MAX14979EETX	MAXIM	获取价格	High-Bandwidth, ±15kV ESD Protection LVDS Swi
MAX14979EETX+	MAXIM	获取价格	High-Bandwidth,±15kV ESD Protection LVDS Swit
MAX14979EETX+T	MAXIM	获取价格	Multiplexers/Switches, 7 Func, BICMOS, PQCC36,
MAX1497EAI	MAXIM	获取价格	3.5- and 4.5-Digit, Single-Chip ADCs with LED
MAX1497EAI+	MAXIM	获取价格	ADC, Proprietary Method, 1 Func, 1 Channel, BICMOS, PDSO28, 5.30 MM, MO-150, SSOP-28
MAX1497EAI+T	MAXIM	获取价格	ADC, Proprietary Method, 1 Func, 1 Channel, BICMOS, PDSO28, 5.30 MM, MO-150, SSOP-28

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