Datasheet

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MM5452, MM5453

www.ti.com

SNLS367C –FEBRUARY 1995–REVISED MARCH 2013

MM5452/MM5453 Liquid Crystal Display Drivers

Check for Samples: MM5452, MM5453

FEATURES

DESCRIPTION

The MM5452 is a monolithic integrated circuit utilizing

• Serial Data Input

CMOS metal gate, low threshold enhancement mode

• No Load Signal Required

devices. It is available in a 40-pin PDIP package. The

• DATA ENABLE (MM5452)

chip can drive up to 32 segments of LCD and can be

paralleled to increase this number. The chip is

• Wide Power Supply Operation

capable of driving a 4½-digit 7-segment display with

• TTL Compatibility

minimal interface between the display and the data

• 32 or 33 Outputs

source.

• Alphanumeric and Bar Graph Capability

The MM5452 stores display data in latches after it is

• Cascaded Operation Capability

clocked in, and holds the data until new display data

is received.

APPLICATIONS

• COPS™ or Microprocessor Displays

• Industrial Control Indicator

• Digital Clock, Thermometer, Counter,

Voltmeter

• Instrumentation Readouts

• Remote Displays

Block Diagram

Figure 1.

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (13 pages)

PAGE 1
MM5452, MM5453 www.ti.com SNLS367C – FEBRUARY 1995 – REVISED MARCH 2013 MM5452/MM5453 Liquid Crystal Display Drivers Check for Samples: MM5452, MM5453 FEATURES DESCRIPTION • • • • • • • • The MM5452 is a monolithic integrated circuit utilizing CMOS metal gate, low threshold enhancement mode devices. It is available in a 40-pin PDIP package. The chip can drive up to 32 segments of LCD and can be paralleled to increase this number.
PAGE 2
MM5452, MM5453 SNLS367C – FEBRUARY 1995 – REVISED MARCH 2013 Absolute Maximum Ratings www.ti.com (1) (2) Voltage at Any Pin, Referenced to Gnd -0.3V to +10V Storage Temperature -65°C to +150°C Power Dissipation at 25°C 350mW Power Dissipation at 70°C 300mW Junction Temperature +150°C Lead Temperature (1) (2) (Soldering, 10s) 300°C “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be ensured.
PAGE 3
MM5452, MM5453 www.ti.com SNLS367C – FEBRUARY 1995 – REVISED MARCH 2013 Connection Diagram Figure 2. Top View See Package Number NFJ0040A Figure 3. Top View See Package Number NFJ0040A Figure 4. Top View See Package Number FN0044A Figure 5.
PAGE 4
MM5452, MM5453 SNLS367C – FEBRUARY 1995 – REVISED MARCH 2013 www.ti.com FUNCTIONAL DESCRIPTION The MM5452 is specifically designed to operate 4½-digit 7-segment displays with minimal interface with the display and the data source. Serial data transfer from the data source to the display driver is accomplished with 2 signals, serial data and clock. Since the MM5452 does not contain a character generator, the formatting of the segment information must be done prior to inputting the data to the MM5452.
PAGE 5
MM5452, MM5453 www.ti.com SNLS367C – FEBRUARY 1995 – REVISED MARCH 2013 Consult LCD manufacturer’s data sheet for specific pinouts. Figure 8.
PAGE 6
MM5452, MM5453 SNLS367C – FEBRUARY 1995 – REVISED MARCH 2013 www.ti.com *The minimum recommended value for R for the oscillator input is 9 kΩ. An RC time constant of approximately 4.91 × 10−4 should produce a backplane frequency between 30 Hz and 150 Hz. Figure 9. Parallel Backplane Outputs Figure 10. External Backplane Clock Figure 11 shows a four wire remote display that takes advantage of the device’s serial input to move many bits of display information on a few wires.
PAGE 7
MM5452, MM5453 www.ti.com SNLS367C – FEBRUARY 1995 – REVISED MARCH 2013 With a buffer amplifier, the same staircase waveform can be used for many displays. The digital-to-analog converter need not be linear; logarithmic or other non-linear functions can be displayed by using weighted resistors or special DACs. This system can be used for status indicators, spectrum analyzers, audio level and power meters, tuning indicators, and other applications. Figure 11.
PAGE 8
MM5452, MM5453 SNLS367C – FEBRUARY 1995 – REVISED MARCH 2013 www.ti.com REVISION HISTORY Changes from Revision B (March 2013) to Revision C • 8 Page Changed layout of National Data Sheet to TI format ............................................................................................................
PAGE 9
PACKAGE OPTION ADDENDUM www.ti.
PAGE 10
PACKAGE OPTION ADDENDUM www.ti.com (4) 1-Nov-2013 There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device.
PAGE 11
MECHANICAL DATA NFJ0040A N0040A N40A (Rev E) www.ti.
PAGE 12
MECHANICAL DATA MPLC004A – OCTOBER 1994 FN (S-PQCC-J**) PLASTIC J-LEADED CHIP CARRIER 20 PIN SHOWN Seating Plane 0.004 (0,10) 0.180 (4,57) MAX 0.120 (3,05) 0.090 (2,29) D D1 0.020 (0,51) MIN 3 1 19 0.032 (0,81) 0.026 (0,66) 4 E 18 D2 / E2 E1 D2 / E2 8 14 0.021 (0,53) 0.013 (0,33) 0.007 (0,18) M 0.050 (1,27) 9 13 0.008 (0,20) NOM D/E D2 / E2 D1 / E1 NO. OF PINS ** MIN MAX MIN MAX MIN MAX 20 0.385 (9,78) 0.395 (10,03) 0.350 (8,89) 0.356 (9,04) 0.141 (3,58) 0.169 (4,29) 28 0.
PAGE 13
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