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Glass/Ceramic Numeric and Hexadecimal Displays for Industrial Applications Technical Data
4N51 4N52 4N53 4N54
Features
* Three Character Options Numeric, Hexadecimal, Over Range * 4 x 7 Dot Matrix Character * Performance Guaranteed Over Temperature * High Temperature Stabilized * Solder Dipped Leads * Memory Latch/Decoder/ Driver TTL Compatible * Categorized for Luminous Intensity
Description
These standard red solid state displays have a 7.4 mm (0.29 inch) dot matrix character and an on-board IC with data memory latch/decoder and LED drivers in a glass/ceramic package. These devices utilize a solder glass frit seal. The 4N51 numeric display decodes positive 8421 BCD logic inputs into characters 0-9, a "-" sign, a test pattern, and four blanks in the invalid BCD states. The unit employs a right-hand decimal point.
Package Dimensions*
4N51 4N52 4N54
4N54 (5082) (739X)
*JEDEC Registered Data.
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The 4N52 is the same as the 4N51 except that the decimal point is located on the left side of the digit. The 4N54 hexadecimal display decodes positive 8421 logic inputs into 16 states, 0-9 and A-F.
In place of the decimal point an input is provided for blanking the display (all LEDs off), without losing the contents of the memory. The 4N53 is a " 1." overrange display, including a right-hand decimal point.
Absolute Maximum Ratings*
Description Storage Temperature, Ambient Operating Temperature, Ambient[1,2] Supply Voltage[3] Voltage Applied to Input Logic, dp and Enable Pins Voltage Applied to Blanking Input[7] Maximum Solder Temperature at 1.59 mm (0.062 inch) Below Seating Plane; t 5 Seconds Symbol TS TA VCC VI, VDP, VE VB Min. -65 -55 -0.5 -0.5 -0.5 Max. +125 +100 +7.0 VCC VCC 260 Unit C C V V V C
Recommended Operating Conditions*
Description Supply Voltage Operating Temperature, Ambient [1,2] Enable Pulse Width Time Data Must Be Held Before Positive Transition of Enable Line Time Data Must Be Held After Positive Transition of Enable Line Enable Pulse Rise Time
*JEDEC Registered Data.
Symbol VCC TA tW tSETUP tHOLD tTLH
Min. 4.5 -55 100 50 50
Nom. 5.0
Max. 5.5 +100
Unit V C nsec nsec nsec
200
nsec
3
Electrical/Optical Characteristics*
TA = -55C to +100C, unless otherwise specified Description Supply Current Power Dissipation Luminous Intensity per LED (Digit Average)[5,6] Logic Low-Level Input Voltage Logic High-Level Input Voltage Enable Low-Voltage; Data Being Entered Enable High-Voltage; Data Not Being Entered Blanking Low-Voltage; Display Not Blanked[7] Blanking High-Voltage; Display Blanked[7] Blanking Low-Level Input Current[7] Blanking High-Level Input Current[7] Logic Low-Level Input Current Logic High-Level Input Current Enable Low-Level Input Current Enable High-Level Input Current Peak Wavelength Dominant Wavelength [8] Weight** Leak Rate Symbol ICC PT Iv VIL VIH VEL VEH VBL VBH IBL IBH IIL IIH IEL IEH PEAK d VCC = 5.5 V, VBL = 0.8 V VCC = 5.5 V, VBH = 4.5 V VCC VCC VCC VCC = 5.5 V, VIL = 0.4 V = 5.5 V, VIH = 2.4 V = 5.5 V, VEL = 0.4 V = 5.5 V, VEH = 2.4 V 655 640 1.0 5 x 10-8 3.5 50 1.0 -1.6 +100 -1.6 +130 Test Conditions VCC = 5.5 V (Characters "5." or "B") VCC = 5.0 V, TA = 25C VCC = 4.5 V 2.0 0.8 2.0 0.8 Min. Typ.[4] 112 560 85 Max. 170 935 Unit mA mW cd V V V V V V A mA mA A mA A nm nm gm cc/sec
40
0.8
TA = 25C TA = 25C
Notes: 1. Nominal thermal resistance of a display mounted in a socket which is soldered into a printed circuit board: JA = 50C/W; JC = 15C/W. 2. CA of a mounted display should not exceed 35C/W for operation up to TA = +100C. 3. Voltage values are with respect to device ground, pin 6. 4. All typical values at VCC = 5.0 Volts, TA = 25C. 5. These displays are categorized for luminous intensity with the intensity category designated by a letter located on the back of the display contiguous with the Hewlett-Packard logo marking. 6. The luminous intensity at a specific ambient temperature, Iv(TA), may be calculated from this relationship: I v(TA ) = Iv(25C)(0.985) (TA-25C). 7. Applies only to 4N54. 8. The dominant wavelength, d, is derived from the CIE chromaticity diagram and represents the single wavelength which defines the color of the device.
*JEDEC Registered Data. **Non-Registered Data.
4
Figure 1. Timing Diagram of 4N514N54 Series Logic.
Figure 2. Block Diagram of 4N514N54 Series Logic.
Figure 3. Typical Blanking Control Current vs. Voltage for 4N54.
Figure 4. Typical Blanking Control Input Current vs. Ambient Temperature for 4N54.
Figure 5. Typical Latch Enable Input Current vs. Voltage.
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Figure 6. Typical Logic and Decimal Point Input Current vs. Voltage.
Figure 7. Typical Logic and Enable Low Input Current vs. Ambient Temperature.
Figure 8. Typical Logic and Enable High Input Current vs. Ambient Temperature.
Operational Considerations
Electrical The 4N51-4N54 series devices use a modified 4 x 7 dot matrix of light emitting diodes (LEDs) to display decimal/hexadecimal numeric information. 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. To avoid the latching of erroneous information, the enable pulse rise time should not exceed 200 nanoseconds. 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 blanking control input on the 4N54 display blanks (turns off) the displayed hexadecimal information without disturbing the contents of display memory. The display is blanked at a
minimum threshold level of 3.5 volts. This may be easily achieved by using an open collector TTL gate and a pull-up resistor. For example, (1/6) 7416 hexinverter buffer/driver and a 120 ohm pullup resistor will provide sufficient drive to blank eight displays. The size of the blanking pull-up resistor may be calculated from the following formula, where N is the number of digits: Rblank = (VCC - 3.5 V)/[N (1.0 mA)] 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 ESD susceptibility of the IC devices is Class A of MIL-STD883 or Class 2 of DOD-STD-1686 and DOD-HDBK-263. Mechanical 4N51-4N54 series displays are hermetically tested for use in environments which require a
high reliability device. These displays are designed and tested to meet a helium leak rate of 5 x 10-8 cc/sec and a fluorocarbon gross leak bubble test. These displays may be mounted by soldering directly to a printed circuit board or inserted into a socket. The lead-to-lead pin spacing is 2.54 mm (0.100 inch) and the lead row spacing is 15.24 mm (0.600 inch). These displays may be end stacked with 2.54 mm (0.100 inch) spacing between outside pins of adjacent displays. Sockets such as Augat 324 AG2D (3 digits) or Augat 508 (one digit, right angle mounting) may be used. The primary thermal path for power dissipation is through the device leads. Therefore, to insure reliable operation up to an ambient temperature of +100C, it is important to maintain a caseto-ambient thermal resistance of less than 35C/watt as measured on top of display pin 3.
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Soldering For information on soldering and post solder cleaning, see Application Note 1027 Soldering LED Components. Preconditioning 4N51-4N54 series displays are 100% preconditioned by 24 hour storage at 125C.
Contrast Enhancement The 4N51-4N54 displays have been designed to provide the maximum possible ON/OFF contrast when placed behind an appropriate contrast enhancement filter. For further information see Agilent Application Note 1015, Contrast Enhancement for LED Displays.
Solid State Over Range Display
For display applications requiring a , 1, or decimal point designation, the 4N53 over range display is available. This display module comes in the same package as the 4N51-4N54 series numeric display and is completely compatible with it.
Package Dimensions*
4N53 (5082) (739X) SYYWW
COUNTRY CODE
*JEDEC registered data
7
Electrical/Optical Characteristics*
4N53 (TA = -55C to +100C, Unless Otherwise Specified) Description Forward Voltage per LED Power Dissipation Luminous Intensity per LED (Digit Average) Peak Wavelength Dominant Wavelength Weight** Symbol VF PT IF peak d Test Conditions IF = 10 mA IF = 10 mA, all diodes lit IF = 6 mA TC = 25C TC = 25C TC = 25C Min Typ 1.6 280 85 655 640 1.0 Max 2.0 320 Unit V mW cd nm nm gm
40
Recommended Operating Conditions*
Description LED Supply Voltage Forward Current, Each LED Sym VCC IF Min 4.5 Nom 5.0 5.0 Max Unit 5.5 V 10 mA
Absolute Maximum Ratings*
Description Storage Temperature, Ambient Operating Temperature, Ambient Forward Current, Each LED Reverse Voltage, Each LED Symbol TS TA IF VR Min -65 -55 Max +125 +100 10 4 Unit C C mA V
Note: LED current must be externally limited. Refer to Figure 9 for recommended resistor values. *JEDEC Registered Data. **Non-Registered Data.
www.semiconductor.agilent.com Data subject to change. Copyright (c) 1999 Agilent Technologies, Inc. Obsoletes 5954-0857E 5964-6389E (11/99)

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