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PDF MM5450 Data sheet ( Hoja de datos )
| Número de pieza | MM5450 | |
| Descripción | LED Display Drivers | |
| Fabricantes | National | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MM5450 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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February 1995
MM5450 MM5451 LED Display Drivers
General Description
The MM5450 and MM5451 are monolithic MOS integrated
circuits utilizing N-channel metal-gate low threshold en-
hancement mode and ion-implanted depletion mode devic-
es They are available in 40-pin molded or cavity dual-in-line
packages The MM5450 MM5451 is designed to drive com-
mon anode-separate cathode LED displays A single pin
controls the LED display brightness by setting a reference
current through a variable resistor connected to VDD
Applications
Y COPSTM or microprocessor displays
Y Industrial control indicator
Y Relay driver
Y Digital clock thermometer counter voltmeter
Y Instrumentation readouts
Features
Y Continuous brightness control
Y Serial data input
Y No load signal required
Y Enable (on MM5450)
Y Wide power supply operation
Y TTL compatibility
Y 34 or 35 outputs 15 mA sink capability
Y Alphanumeric capability
Y iJA DIP
Board e 49 C W
Socket e 54 C W
Block Diagram
FIGURE 1
TL F 6136–1
COPSTM is a trademark of National Semiconductor Corporation
C1995 National Semiconductor Corporation TL F 6136
RRD-B30M105 Printed in U S A
1 page  
Functional Description (Continued)
FIGURE 4 Input Data Format
Typical Performance Characteristics
TL F 6136–5
FIGURE 5
TL F 6136 – 6
Typical Applications
FIGURE 6
TL F 6136–7
FIGURE 7
TL F 6136–8
I19
e
DV
1k
TL F 6136–9
FIGURE 8 Typical Application of Constant Current Brightness Control
FIGURE 9 Brightness Control Varying the Duty Cycle
5
TL F 6136–10
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet MM5450.PDF ] | |
Hoja de datos destacado
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| MM5451 | LED Display Driver | Micrel |
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