Datasheet > 暂无类别数据> NTE2028

NTE2028

更新时间： 2024-09-14 22:50:51

品牌	Logo	应用领域
NTE		解码器驱动器高压
页数	文件大小	规格书
4页	34K
描述
Integrated Circuit 7-Segment High Voltage Decoder/Driver

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NTE2028 数据手册

NTE2028

Integrated Circuit

7–Segment High Voltage Decoder/Driver

Description:

The NTE2028 is an integrated circuit in a 16–Lead DIP type package custom designed to decode

four lines of BCD and drive a gas–filled seven–segment display tube.

Each output constitutes a switchable, adjustable current sink which provides constant current to the

tube segment, even with high tube anode supply tolerance or fluctuation. These current sinks have

a voltage compliance from 3V to at least 80V; typically the output current varies 1% for output voltage

changes of 3 to 50V. Each bit line of the decoder switches a current sink on or off as prescribed by

the input code. Each current sink is ratioed to the b–output current as required for even illumination

of all segments.

Output currents may be varied over the 0.2 to 1.5 mA range for driving various tube types or multiplex

operation. The output current is adjusted by connecting an external program resistor (R_p) from V_CC

to the Program input in accordance with the programming curve. The circuit design provides a one–

to–one correlation between program input current and b–segment output current.

The Blanking Input provides unconditional blanking of any output display, while the Ripple Blanking

pins allow simple leading or trailing zero blanking.

Features:

D Current Sink Outputs

D Adjustable Output Current: 0.2 to 1.5mA

D High Output Breakdown Voltage: 110V Typ

D Suitable for Multiplex Operation

D Blanking and Ripple Blanking Provisions

D Low Fan–In and Low Power

Absolute Maximum Raings: (Note 1)

Supply Voltage, V_CC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7V

Input Voltage (Except BI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6V

Input Voltage (BI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V_CC

Segment Output Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80V

Power Dissipation, P_D. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600mW

Transient Segment Output Current (Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50mA

Storage Temperature Range, T_stg. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C

Lead Temperature (During Soldering, 10sec), T_L. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +300°C

Note 1. “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot

be guaranteed. Except for “Operating Temperature Range” they are not meant to imply that

the device should be operated at these limits. The table of “Electrical Chracteristics” pro-

vides conditions for actual device operation.

Note 2. In all applications transient segment output current must be limited to 50mA. This may be

accomplished in DC applications by connecting a 2.2k resistor from the anode–supply filter

capacitor to the display anode, or by current limiting the anode driver in multiplex applica-

tions.

12 3 4

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与NTE2028相关器件

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NTE2051	NTE	获取价格	Integrated Circuit 31/2-Digit Single Chip A/D Converter
NTE2053	NTE	获取价格	Integrated Circuit 8-Bit MPU Compatible A/D Converter
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