MICROPAC INDUSTRIES, INC. OPTOELECTRONIC PRODUCTS DIVISION • 725 E. Walnut St., Garland, TX 75040 • (972) 272-3571 • Fax (972) 487-6918

www.micropac.com

E-MAIL:

optosales@micropac.com

2 - 4

4N51, 4N52

HERMETIC , NUMERIC AND HEXADECIMAL

DISPLAYS

Mii

OPTOELECTRONIC PRODUCTS

DIVISION

Features:

•

Conforms to MIL-PRF-87157

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Three character options

Numeric, Hexidecimal or Over range

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4 X 7 dot matrix character

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Memory latch/decoder/driver is TTL compatible

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Available in Red or Green

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Categorized for luminous intensity

Applications:

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High reliability systems

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Instrumentation panels

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Communication equipment

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Medical equipment

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Harsh environments

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IR blocking filter available

DESCRIPTION

The

an on-board decoder/driver and memory (except 4N53). These displays are hermetically sealed and conform to MIL-PRF-87157, the

general specification for light emitting diode displays. The character height is 7.4mm (.29”). The green LED version conforms to

MIL-D-87157 with exception of color.

The 4N51 is a numeric display which decodes positive BCD logic into the numbers “0-9”, a “-” sign, a right-hand decimal point, and a

test pattern (all LED’s on).

The 4N52 is the same as the 4N51, but the decimal point is located on the left side of the device.

The 4N53 is an over range device which displays “+1” and a right-hand decimal point. This display is typically driven using external

switching transistors.

The 4N54 is a hexidecimal display which decodes positive BCD logic into 16 characters “0-9, A-F”. An input is provided to blank the

display (all LED’s off) without losing the contents of the memory.

ABSOLUTE MAXIMUM RATINGS

Storage Temperature..........................................................................................................................................-65°C to +125°C

Operating Free-Air Temperature Range. ...........................................................................................................-55°C to +100°C

Lead Solder Temperature (1/16” [1.6mm] below seating plane for 10s) ........................................................................... 260°C

Voltage Applied to Input Logic, DP and Enable Pins ............................................................................................... . -0.5V to 7V

Voltage Applied to Blanking Input (4N54 only)........................................................................................................... -0.5V to 7V

Forward Current, Each LED (4N53 only) ............................................................................................................................10mA

Reverse Voltage, Each LED (4N53 only)................................................................................................................................. 4V