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CD4511BC Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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CD4511BC Datasheet(HTML) 1 Page - National Semiconductor (TI) |
1 / 8 page TLF5991 February 1988 CD4511BMCD4511BC BCD-to-7 Segment LatchDecoderDriver General Description The CD4511BMCD4511BC BCD-to-seven segment latch decoderdriver is constructed with complementary MOS (CMOS) enhancement mode devices and NPN bipolar out- put drivers in a single monolithic structure The circuit pro- vides the functions of a 4-bit storage latch an 8421 BCD-to- seven segment decoder and an output drive capability Lamp test (LT) blanking (BI) and latch enable (LE) inputs are used to test the display to turn-off or pulse modulate the brightness of the display and to store a BCD code respectively It can be used with seven-segment light emit- ting diodes (LED) incandescent fluorescent gas discharge or liquid crystal readouts either directly or indirectly Applications include instrument (eg counter DVM etc) display driver computercalculator display driver cockpit display driver and various clock watch and timer uses Features Y Low logic circuit power dissipation Y High current sourcing outputs (up to 25 mA) Y Latch storage of code Y Blanking input Y Lamp test provision Y Readout blanking on all illegal input combinations Y Lamp intensity modulation capability Y Time share (multiplexing) facility Y Equivalent to Motorola MC14511 Connection Diagram Dual-In-Line Package TLF5991 – 1 Top View Order Number CD4511B Segment Identification TLF5991 – 3 Truth Table Inputs Outputs LE BI LT D C B A a b c d e f g Display X X 0 X X X X 111 1 1 11 B X 0 1 X X X X 000 0 0 00 0 1 1 0 0 0 0 111 1 1 10 0 0 1 1 0 0 0 1 011 0 0 00 1 0 1 1 0 0 1 0 110 1 1 01 2 0 1 1 0 0 1 1 111 1 0 01 3 0 1 1 0 1 0 0 011 0 0 11 4 0 1 1 0 1 0 1 101 1 0 11 5 0 1 1 0 1 1 0 001 1 1 11 6 0 1 1 0 1 1 1 111 0 0 00 7 0 1 1 1 0 0 0 111 1 1 11 8 0 1 1 1 0 0 1 111 0 0 11 9 0 1 1 1 0 1 0 000 0 0 00 0 1 1 1 0 1 1 000 0 0 00 0 1 1 1 1 0 0 000 0 0 00 0 1 1 1 1 0 1 000 0 0 00 0 1 1 1 1 1 0 000 0 0 00 0 1 1 1 1 1 1 000 0 0 00 11 1 X X X X X e Don’t Care Depends upon the BCD code applied during the 0 to 1 transition of LE Display TLF5991 – 2 C1995 National Semiconductor Corporation RRD-B30M105Printed in U S A |
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