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參數(shù)資料
| 型號： | MAX3349EETE+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 2/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC TXRX USB 2.0 FS 16-TQFN |
| 標準包裝： | 75 |
| 類型： | 收發(fā)器 |
| 驅(qū)動器/接收器數(shù)： | 1/1 |
| 規(guī)程： | USB 2.0 |
| 電源電壓： | 4 V ~ 5.5 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-TQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 16-TQFN-EP（4x4） |
| 包裝： | 管件 |
MAX3349E
Hi-Speed USB 2.0 Full-Speed Transceiver
with UART Multiplexing Mode
10
______________________________________________________________________________________
with a 0.1F ceramic capacitor as close to the device
as possible.
Operating Modes
The MAX3349E operates in either USB mode or UART
mode, depending on the presence or absence of
VBUS. Bus detect output BD is logic-high when a volt-
age higher than VTH-VBUS is applied to VBUS, and
logic-low otherwise. The MAX3349E operates in USB
mode when BD is logic-high, and UART mode when
BD is logic-low.
USB Mode
In USB mode, the MAX3349E implements a full-speed
(12Mbps) USB interface on D+ and D-, with enumerate
and suspend functions. A differential USB receiver pre-
sents the USB state as a logic-level output RCV
(Table 3a). VP/VM are outputs of single-ended USB
receivers when OE is logic-high, allowing detection of
single-ended 0 (SE0) events. When OE is logic-low, VP
and VM serve as inputs to the USB transmitter. Drive
suspend input SUS logic-high to force the MAX3349E
into a low-power operating mode and disable the differ-
ential USB receiver (Table 3b).
UART Mode
The MAX3349E operates in UART mode when BD is
logic-low (VBUS not present). The Rx signal is the out-
put of a single-ended receiver on D+, and the Tx input
is driven out on D-. Signaling voltage thresholds for D+
and D- are determined by VUART, an externally applied
voltage between +2.7V and +3.3V.
Power-Supply Configurations
VL Logic Supply
In both USB and UART modes, the control interface is
powered from VL. The MAX3349E operates with logic-
side voltage (VL) as low as +1.4V, providing level shift-
ing for lower voltage ASICs and microcontrollers.
Timing Diagrams (continued)
IP 100%
90%
36.8%
tRL
TIME
tDL
CURRENT WAVEFORM
PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)
Ir
10%
0
AMPERES
Figure 10. Human Body Model Current Waveform
CHARGE-CURRENT-
LIMIT RESISTOR
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
Cs
150pF
RC
50M to 100M
RD
330
HIGH-
VOLTAGE
DC
SOURCE
DEVICE
UNDER
TEST
Figure 11. IEC61000-4-2 ESD Contact Discharge Test Model
tR = 0.7ns to 1ns
30ns
60ns
t
100%
90%
10%
I PEAK
I
Figure 12. IEC 61000-4-2 Contact Discharge Model Current
Waveform
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX3349EETE+ | 功能描述:IC TXRX USB 2.0 FS 16-TQFN RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:25 系列:- 類型:收發(fā)器 驅(qū)動器/接收器數(shù):2/2 規(guī)程:RS232 電源電壓:4.5 V ~ 5.5 V 安裝類型:通孔 封裝/外殼:16-DIP（0.300"，7.62mm） 供應(yīng)商設(shè)備封裝:16-PDIP 包裝:管件 |
| MAX3349EETE+T | 制造商:Maxim Integrated Products 功能描述:USB TRNSCVR 1TX 1RX 12MBPS 16TQFN EP - Tape and Reel |
| MAX334C/D | 制造商:Maxim Integrated Products 功能描述: |
| MAX334CJE | 功能描述:模擬開關(guān) IC RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:2 開關(guān)配置:SPDT 開啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開啟時間（最大值）: 關(guān)閉時間（最大值）: 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-16 |
| MAX334CPE | 功能描述:模擬開關(guān) IC RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:2 開關(guān)配置:SPDT 開啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開啟時間（最大值）: 關(guān)閉時間（最大值）: 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-16 |
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