BCD-to-Seven-Segment Decoder / Driver (with 15 V Outputs)
May 10, 2006
HD74LS47 features active-low outputs designed for driving incandescent indicators directly. This device has full
ripple-blanking input / output controls and a lamp test. Display patterns for BCD input counts above 9 are unique
symbols to authenticate input conditions. This circuit incorporates automatic leading and / or trailing-edge zero-
blanking control (RBI and RBO). Lamp test (LT) of these types may be performed at any time when the BI / RBO
node is at a high level. It contains an overriding blanking input (BI) which can be used to control the lamp intensity of
pulsing or to inhibit the outputs. Inputs and outputs are entirely compatible for use with TTL or DTL logic outputs.
• Ordering Information
HD74LS47FPEL SOP-16 pin (JEITA)
Note: Please consult the sales office for the above package availability.
EL (2,000 pcs/reel)
12 b Outputs
Rev.3.01, May 10, 2006, page 1 of 6