M5451 ST Microelectronics, Inc., M5451 Datasheet

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M5451

Manufacturer Part Number
M5451
Description
Led Display Drivers
Manufacturer
ST Microelectronics, Inc.
Datasheet

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FEATURES SUMMARY
Application Examples:
DESCRIPTION
The M5450 and M5451 are monolithic MOS inte-
grated circuits produced with an N-channel silicon
gate technology. They are available in 40-pin dual
in-line plastic packages.
A single pin controls the LED display brightness by
setting a reference current through a variable re-
sistor connected to V
13.2V maximum.
April 2004
M5450 34 OUTPUTS/15mA SINK
M5451 35 OUTPUTS/15mA SINK
CURRENT GENERATOR OUTPUTS (NO
EXTERNAL RESISTORS REQUIRED)
CONTINUOUS BRIGHTNESS CONTROL
SERIAL DATA INPUT
ENABLE (ON M5450)
WIDE SUPPLY VOLTAGE OPERATION
TTL COMPATIBILITY
MICROPROCESSOR DISPLAYS
INDUSTRIAL CONTROL INDICATOR
RELAY DRIVER
INSTRUMENTATION READOUTS
DD
or to a separate supply of
Figure 1. Packages
LED DISPLAY DRIVERS
40
1
(Plastic Chip Carrier)
(Plastic Package)
PLCC44
PDIP40
REV. 2
M5450
M5451
1/12

Related parts for M5451

M5451 Summary of contents

Page 1

... RELAY DRIVER ■ INSTRUMENTATION READOUTS ■ DESCRIPTION The M5450 and M5451 are monolithic MOS inte- grated circuits produced with an N-channel silicon gate technology. They are available in 40-pin dual in-line plastic packages. A single pin controls the LED display brightness by setting a reference current through a variable re- ...

Page 2

... OUTPUT BIT 7 OUTPUT BIT 28 OUTPUT BIT 6 OUTPUT BIT 29 OUTPUT BIT 5 OUTPUT BIT 30 OUTPUT BIT 4 OUTPUT BIT 31 OUTPUT BIT 32 OUTPUT BIT 33 OUTPUT BIT 34 DATA ENABLE FOR M5450 OUTPUT BIT 35 FOR M5451 DATA IN CLOCK OUTPUT BIT 100kΩ OUTPUT BUFFERS ...

Page 3

... Exposure to absolute maximum rating conditions for extended periods may affect device reliability. FUNCTIONAL DESCRIPTION Both the M5450 and the M5451 are specially de- signed to operate 4 or 5-digit alphanumeric dis- plays with minimal interface with the display and the data source ...

Page 4

... M5450, M5451 Table 2. Static Electrical Characteristics (T within operating range, V amb Symbol Parameter V Supply Voltage DD I Supply Current DD V Input Voltage Logical "0" Level I Logical "1" Level I Brightness Input Current (note Brightness Input Voltage (pin 19) Input Current = 750µA, T ...

Page 5

... Figure (mA) 105 20 segments 30 segments 85 34 segments (mA) LED M5450, M5451 (W) tot 15mA/segment 34 segments SAFE OPERATING AREA amb I O (max 1. ...

Page 6

... M5450, M5451 TYPICAL APPLICATIONS Figure 9. Basic Electronically Tuned Radio Or Tv System KEYBOARD Figure 10. Duplexing 8 Digits With One M5450 CLOCK IN DATA IN BRIGHTNESS CONTROL 6/ SEGMENTS M5450 DISPLAY DRIVER ELECTRONIC TUNING CONTROLLER STATION DETEC. ETC. V LED . . . . . M5450 ...

Page 7

... The total power dissipation of the IC depends first approximation, only on the number of seg- ments activated. Figure 12. Figure this configuration V stant. The total power dissipation of the IC de- pends only on the number of segments activated. Figure 13. V OMIN D M5450, M5451 + con- OUT ...

Page 8

... M5450, M5451 PART NUMBERING Table 3. Order Codes Part Number M5450B7/M5451B7 M5451Q 8/12 Package PDIP40 PLCC44 Temperature Range - °C - °C ...

Page 9

... Figure 14. PDIP40 - Package Dimensions Note: Drawing is not to scale millimeters Min Max 0.63 0.45 0.31 1.27 52.58 16.68 2.54 48.26 14.1 4.445 3 M5450, M5451 inches Typ Min 0.025 0.018 0.009 0.050 0.598 0.100 1.900 0.175 0.130 b1 E Max 0.012 2.070 0.657 0.555 9/12 ...

Page 10

... M5450, M5451 Table 5. PLCC44 - Mechanical Data Symbol Typ A 17.4 B 16.51 C 3.65 D 4 14. Figure 15. PLCC44 - Package Dimensions Note: Drawing is not to scale. 10/12 millimeters Min Max 17.65 16.65 3.7 4.57 2.74 0.68 16 1.27 12.7 0.46 0.71 0.101 1.16 1. (Seating Plane Coplanarity) inches Typ Min 0.685 ...

Page 11

... REVISION HISTORY Table 6. Revision History Date Revision September-1993 1 14-Mar-2004 2 Description of Changes First Issue Stylesheet update. No content change. M5450, M5451 11/12 ...

Page 12

... M5450, M5451 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice ...

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