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HDSP0762中文资料

Hexadecimal and Numeric Displays for Industrial Applications

Technical Data

Features

? Three Colors

High-Efficiency Red

Yellow

High Performance Green

? Two High-Efficiency Red Options

Low Power

High Brightness

? Three Character Options

Numeric

Hexadecimal

Over Range

? Performance Guaranteed over Temperature ? Memory Latch/Decoder/ Driver

TTL Compatible

? 4 x 7 Dot Matrix Character ? Categorized for Luminous Intensity

? Yellow and Green Categorized for Color Typical Applications

? Industrial Equipment

? Computer Peripherals

? Instrumentation

? Telecommunication Equipment

Device Selection Guide

Part Number Front HDSP-Color Description View 0760High-Efficiency Numeric, Right Hand DP A

0761Red Numeric, Left Hand DP B

0762Low Power Hexadecimal C

0763Over Range ±1D

0770High-Efficiency

Numeric, Right Hand DP A 0771Red Numeric, Left Hand DP B 0772High Brightness Hexadecimal C 0763Over Range ±1D 0860Yellow Numeric, Right Hand DP A 0861Numeric, Left Hand DP B 0862Hexadecimal C 0863Over Range ±1D 0960Green Numeric, Right Hand DP A 0961Numeric, Left Hand DP B 0962Hexadecimal C 0963Over Range ±1D Description

These solid state display devices are designed and tested for use in adverse industrial environments. The character height is 7.4mm (0.29 inch). The numeric and hexadecimal devices incorporate an on-board IC that contains the data memory, decoder and display driver functions.

The numeric devices decode positive BCD logic into characters “0-9”, a “–” sign, decimal point, and a test pattern. The hexadeci-mal devices decode positive BCD logic into 16 characters, “0-9, A-F.”An input is provided on the hexa-decimal devices to blank the display (all LEDs off) without losing the contents of the memory. The over range device displays “±1” and right hand decimal point and is typically driven via external switching transistors.

HDSP-076X Series

HDSP-077X Series

HDSP-086X Series

HDSP-096X Series

Package Dimensions

Figure 2. Logic Block Diagram.

Figure 1. Timing Diagram

Absolute Maximum Ratings

Description Symbol Min.Max.Unit Storage Temperature, Ambient T S-65+100°C Operating Temperature, Ambient[1]T A-55+85°C Supply Voltage[2]V CC-0.5+7.0V Voltage Applied to Input Logic, dp and Enable Pins V I, V DP, V E-0.5V CC V Voltage Applied to Blanking Input[2]V B-0.5V CC V Maximum Solder Temperature at 1.59 mm (0.062 inch)260°C Below Seating Plane, t ≤ 5 seconds

Recommended Operating Conditions

Description Symbol Min.Nom.Max.Unit Supply Voltage[2]V CC 4.5 5.0 5.5V Operating Temperature, Ambient[1]T A-55+85°C Enable Pulse Width t W100nsec Time Data Must Be Held Before Positive t SETUP50nsec Transition of Enable Line

Time Data Must Be Held After Positive t HOLD50nsec Transition of Enable Line

Enable Pulse Rise Time t TLH 1.0msec Optical Characteristics at T A = 25°C, V CC = 5.0 V

Notes:

1. The nominal thermal resistance of a display mounted in a socket that is soldered onto a printed circuit board is RθJA = 50°C/W/

device. The device package thermal resistance is RθJ-PIN = 15°C/W/device. The thermal resistance device pin-to-ambient through the PC board should not exceed 35°C/W/device for operation at T A = +85°C.

2. Voltage values are with respect to device ground, pin 6.

3. These displays are categorized for luminous intensity with the intensity category designated by a letter code located on the back of

the display package. Case temperature of the device immediately prior to the light measurement is equal to 25°C.

Electrical Characteristics; T A = -55°C to +85°C

Notes:

4. The luminous intensity at a specific operating ambient temperature, I V (T A ) may be approximated from the following exponential equation: I (T = I (25°C) e [k (T - 25°C)].

d device.

6. The HDSP-0860 and HDSP-0960 series devices are categorized as to dominant wavelength with the category designated by a number on the back of the display package.

7. All typical values at V CC = 5.0 V and T A = 25°C.

Operational Considerations

Electrical

These devices use a modified

4x7 dot matrix light emitting diode to display decimal/hexa-decimal numeric information. The high efficiency red and yellow LEDs are GaAsP epitaxial layer on a GaP transparent substrate. The green LEDs are GaP epitaxial layer on a GaP transparent substrate. The LEDs are driven by constant current drivers, BCD information is accepted by the display memory when the enable line is at logic low and the data is latched when the enable is at logic high. Using the enable pulse width and data setup and hold times listed in the Recommended Operating Conditions allows data to be clocked into an array of displays at a 6.7 MHz rate.The decimal point input is active

low true and this data is latched

into the display memory in the

same fashion as the BCD data.

The decimal point LED is driven

by the on-board IC.

The blanking control input on the

hexadecimal displays blanks (turns

off) the displayed information

without disturbing the contents of

display memory. The display is

blanked at a minimum threshold

level of 2.0 volts. When blanked,

the display standby power is

nominally 250 mW at T A = 25°C.

Mechanical

The primary thermal path for

power dissipation is through the

device leads. Therefore, to insure

reliable operation up to an

ambient temperature of +85°C, it

is important to maintain a case-

to-ambient thermal resistance of

less than 35°C watt/device as

measured on top of display pin 3.

For information on soldering and

post solder cleaning see Applica-

tion Note 1027, Soldering LED

Components.

Contrast Enhancement

These display devices are

designed to provide an optimum

ON/OFF contrast when placed

behind an appropriate contrast

enhancement filter. For further

information, please refer to

Application Note 1015, Contrast

Enhancement Techniques for

LED Displays.

Over Range Display

The over range devices display

“±1” and decimal point. The

character height and package

configuration are the same as the

numeric and hexadecimal

devices. Character selection is

obtained via external switching

transistors and current limiting

resistors.

NOTE: 1. DIMENSIONS IN MILLIMETRES AND (INCHES).

Package Dimensions

Notes:

0: Line switching transistor in Figure 7 cutoff.

1: Line switching transistor in Figure 7 saturated.

X: 'don't care'

Absolute Maximum Ratings

Description

Symbol Min.Max.Unit Storage Temperature, Ambient T S

-65+100°C Operating Temperature, Ambient T A -55

+85°C Forward Current, Each LED I F 10mA Reverse Voltage, Each LED

V R

Recommended Operating Conditions V = 5.0 V

Luminous Intensity per LED

[3,4]Figure 3. Typical Driving Circuit.

Electrical Characteristics: T = -55°C to +85°C

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Data subject to change.

5963-7395E (11/99)