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NTE851 PDF预览

NTE851

更新时间: 2024-01-08 18:51:09
品牌 Logo 应用领域
NTE 预分频器多谐振动器逻辑集成电路光电二极管时钟
页数 文件大小 规格书
2页 25K
描述
Integrated Circuit VHF/UHF Prescaler

NTE851 技术参数

生命周期:Active零件包装代码:DIP
包装说明:DIP-14针数:14
Reach Compliance Code:unknownHTS代码:8542.39.00.01
风险等级:5.73Is Samacsys:N
JESD-30 代码:R-PDIP-T14逻辑集成电路类型:PRESCALER
数据/时钟输入次数:1功能数量:1
端子数量:14最高工作温度:70 °C
最低工作温度:输出极性:COMPLEMENTARY
封装主体材料:PLASTIC/EPOXY封装形状:RECTANGULAR
封装形式:IN-LINE认证状态:Not Qualified
标称供电电压 (Vsup):5 V表面贴装:NO
温度等级:COMMERCIAL端子形式:THROUGH-HOLE
端子位置:DUAL最小 fmax:1000 MHz
Base Number Matches:1

NTE851 数据手册

 浏览型号NTE851的Datasheet PDF文件第2页 
NTE851  
Integrated Circuit  
VHF/UHF Prescaler  
Description:  
The NTE851 is an integrated circuit prescaler in a 14–Lead DIP type package intended for use in TV  
frequency synthesis tuning systems over an input frequency range of 90 to 1000MHz. It performs  
division by 256 in he UHF mode and division by 64 in the VHF mode.  
The mode of operation can be selected by means of the bandswitch and the separate UHF and VHF  
input pins provided. The output is a complementary emitter–coupled stage with controlled slew rate  
for harmonic suppression.  
All input pins should be AC coupled to the appropriate input signal source. Because of high sensitivity,  
unbuffered coupling from the local oscillator is possible in most cases. In the UHF mode, which is  
activated by applying a high level to the bandswitch input pin, all eight divider stages are operative,  
resulting in division by 256. In the VHF mode, activated by a low level at the VHF input pin, two divider  
stages are bypassed, resulting in division by 64. As a result, approximately the same range of output  
frequencies are generated fo both the UHF and VHF TV bands. An internal amplifier/multiplexer pro-  
vides this control while isolating both inputs and amplifying the VHF signal. In addition, hrmonic output  
is reduced above 40MHz by limiting output signal rise and fall times and maintaining a balanced load.  
Features:  
D Broadband Operation: 90 to 1000MHz  
D High Sensitivity  
D Standard 5V Power Supply  
D Dual Mode Operation: VHF/UHF  
D Complementary ECL Outputs  
D Independent VHF & UHF Input Pins  
Absolute Maximum Ratings:  
DC Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5V  
DC bandswitch Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20V  
RMS Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500mV  
Device Dissipation (TA +70°C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600mW  
Derate Linearly Above 70°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.5mW/°C  
Operating Ambient Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0° to +70°C  
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +150°C  
Lead Temperature (During Soldering, 1/16” from case, 10sec max) . . . . . . . . . . . . . . . . . . . . +265°C  

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