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參數(shù)資料
| 型號(hào)： | MAX3679CTJ+ |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 時(shí)鐘產(chǎn)生/分配 |
| 英文描述： | 625 MHz, OTHER CLOCK GENERATOR, QCC32 |
| 封裝： | 5 X 5 MM, 0.80 MM HEIGHT, ROHS COMPLIANT, MO-220WHHD-2, TQFN-32 |
| 文件頁(yè)數(shù)： | 11/11頁(yè) |
| 文件大?。?/td> | 390K |
| 代理商： | MAX3679CTJ+ |
MAX3679
_______________________________________________________________________________________
9
+3.3V, Low-Jitter Crystal to LVPECL
Clock Generator
Interfacing with LVPECL Outputs
The equivalent LVPECL output circuit is given in Figure 8.
These outputs are designed to drive a pair of 50
Ω trans-
mission lines terminated with 50
Ω to VTT =VCC - 2V. If a
separate termination voltage (VTT) is not available, other
termination methods can be used such as shown in
Figures 5 and 6. Unused outputs should be disabled and
can be left open. For more information on LVPECL termi-
nations and how to interface with other logic families,
refer to Application Note 291:
HFAN-01.0: Introduction to
LVDS, PECL, and CML.
Interface Models
Figures 7, 8, and 9 show examples of interface models.
MAX3679 Qx
82
Ω
Z0 = 50
Ω
Qx
Z0 = 50
Ω
82
Ω
130
Ω
130
Ω
+3.3V
HIGH
IMPEDANCE
Figure 5. Thevenin Equivalent of Standard PECL Termination
MAX3679
Qx
150
Ω
100
Ω
Qx
Z0 = 50
Ω
Z0 = 50
Ω
HIGH
IMPEDANCE
150
Ω
0.1
μF
NOTE: AC-COUPLING IS OPTIONAL.
0.1
μF
Figure 6. AC-Coupled PECL Termination
14.5k
Ω
VB
ESD
STRUCTURES
VB
REF_IN
VB = 1.4V
VCC
Figure 7. Simplified REF_IN Pin Circuit Schematic
ESD
STRUCTURES
Qx
VCC
Qx
Figure 8. Simplified LVPECL Output Circuit Schematic
10
Ω
10
Ω
ESD
STRUCTURES
QA_C
IN
DISABLE
VDDO_A
Figure 9. Simplified LVCMOS Output Circuit Schematic
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX3679CTJ+ | 功能描述:時(shí)鐘發(fā)生器及支持產(chǎn)品 3.3V Low-Jitter Crystal to LVPECL RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-56 |
| MAX3679CTJ+T | 功能描述:時(shí)鐘發(fā)生器及支持產(chǎn)品 3.3V Low-Jitter Crystal to LVPECL RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-56 |
| MAX367C/D | 功能描述:TVS二極管陣列 Signal-Line Circuit Protector RoHS:否 制造商:Littelfuse 極性: 通道:4 Channels 擊穿電壓: 鉗位電壓:11.5 V 工作電壓:2.5 V 峰值浪涌電流:20 A 安裝風(fēng)格:SMD/SMT 端接類型:SMD/SMT 系列: 最小工作溫度:- 40 C 最大工作溫度:+ 85 C |
| MAX367C/D+ | 功能描述:TVS二極管陣列 RoHS:否 制造商:Littelfuse 極性: 通道:4 Channels 擊穿電壓: 鉗位電壓:11.5 V 工作電壓:2.5 V 峰值浪涌電流:20 A 安裝風(fēng)格:SMD/SMT 端接類型:SMD/SMT 系列: 最小工作溫度:- 40 C 最大工作溫度:+ 85 C |
| MAX367CPN | 功能描述:TVS二極管陣列 RoHS:否 制造商:Littelfuse 極性: 通道:4 Channels 擊穿電壓: 鉗位電壓:11.5 V 工作電壓:2.5 V 峰值浪涌電流:20 A 安裝風(fēng)格:SMD/SMT 端接類型:SMD/SMT 系列: 最小工作溫度:- 40 C 最大工作溫度:+ 85 C |
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