74HCT Series Logic – Texas Instruments CD74HCT4511E, This Texas Instruments 74HCT4511 BCD to 7-segment latch/decoder/drivers IC is available in a DIL-16 package. A part of the 74HCT range. A BCD-to-7 segment decoder/driver with four address inputs (D0-D3), an active-low blanking (BL) input, lamp-test (LT) input, and a latch-enable (LE) input that, when high, enables the latches to store the BCD inputs. When LE is low, the latches are disabled, making the outputs transparent to the BCD inputs. Texas Instruments CD74HCT4511E 4511 BCD to 7 Seg Decoder / Driver