參數(shù)資料
型號(hào)： MAX3450EETE+
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 14/14頁(yè)
文件大?。?/td> 0K
描述： TXRX USB +/-15KV ESD PROT 16TQFN
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 100
類型： 收發(fā)器
驅(qū)動(dòng)器/接收器數(shù)： 1/1
規(guī)程： USB 2.0
電源電壓： 3 V ~ 3.6 V
安裝類型： 表面貼裝
封裝/外殼： 16-WFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝： 16-TQFN-EP（3x3）
包裝： 管件
Device Control
OE
OE controls the direction of communication. Drive OE
low to transfer data from the logic side to the USB side.
For
OE = low, VP and VM serve as differential driver
inputs to the USB transmitter.
Drive
OE high to transfer data from the USB side to the
logic side. For
OE = high, VP and VM serve as single-
ended receiver outputs from the USB inputs
(D+ and D-). RCV serves as a differential receiver out-
put, regardless of the state of
OE.
ENUM (MAX3451E)
The MAX3451E features an enumerate function that
allows software control of USB enumeration. USB proto-
col requires a 1.5kΩ pullup resistor to D+ or D- to indi-
cate the transmission speed to the host (see the
SPD
section). The MAX3451E provides an internal 1.5kΩ
pullup resistor. Remove the pullup resistor from the cir-
cuit to simulate a device disconnect from the USB. Drive
ENUM low to disconnect the internal pullup resistor.
Drive ENUM high to connect the internal pullup resistor.
The SPD state determines whether the pullup resistor
connects to D+ or D-. For ENUM = high, the internal
1.5kΩ pullup resistor connects to D+ when SPD = VL
(full speed) or to D- when SPD = GND (low speed).
SPD
SPD sets the transceiver speed. Connect SPD to GND to
select the low-speed data rate (1.5Mbps). Connect SPD
to VL to select the full-speed data rate (12Mbps). The
MAX3451E provides an internal pullup resistor for
selecting the bus speed. The MAX3450E and
MAX3452E require an external pullup resistor to D+ or
D- to set the bus speed. Connect the 1.5kΩ resistor
between D+ and VTRM to set the full-speed (12Mbps)
data rate, or connect the 1.5kΩ resistor between D- and
VTRM to set the low-speed (1.5 Mbps) data rate.
SUS
The SUS state determines whether the MAX3450E/
MAX3451E/MAX3452E operate in normal mode or in
suspend mode. Connect SUS to GND to enable normal
operation. Drive SUS high to enable suspend mode.
RCV asserts low and VP and VM remain active in sus-
pend mode (Tables 3 and 4). Supply current decreases
in suspend mode (see the
Electrical Characteristics).
MAX3450E/MAX3451E/MAX3452E
±15kV ESD-Protected USB Transceivers
_______________________________________________________________________________________
9
Figure 1. Rise and Fall Times
VOHD
VOLD
90%
10%
90%
10%
tFR, tLR
tFF, tLF
Table 3a. Transmit Truth Table
(
OE = 0, SUS = 0)
INPUTS
OUTPUTS
VP
VM
D+
D-
RCV
OUTPUT STATE
00
00X
SE0
01
0
Logic 0
10
1
Logic 1
1
X
Undefined
X = Undefined.
Table 3b. Transmit Truth Table
(OE = 0, SUS = 1)
INPUTS
OUTPUTS
VP
VM
D+
D-
RCV
OUTPUT STATE
00
0
SE0
01
0
Logic 0
10
0
Logic 1
1
0
Undefined
Table 4a. Receive Truth Table
(OE = 1 and SUS = 0)
INPUTS
OUTPUTS
D+
D-
VP
VM
RCV
OUTPUT STATE
0
000
X
SE0
0
1010
Logic 0
1
0101
Logic 1
1
X
Undefined
X = Undefined.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX3450EETE+ 功能描述:USB 接口集成電路 USB Transceiver RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20
MAX3450EETE+T 功能描述:USB 接口集成電路 USB Transceiver RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20
MAX3450EETE-T 功能描述:USB 接口集成電路 RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20
MAX3450EEUD 功能描述:USB 接口集成電路 RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20
MAX3450EEUD+ 功能描述:USB 接口集成電路 USB Transceiver RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20
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