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AiP74HC/HCT48
The AiP74HC/HCT48 feature active-low outputs designed for driving common-anode LEDs or incandescent indicators directly. Display patterns for BCD input counts above 9 are unique symbols to authenticate input conditions.
The AiP74HC/HCT48 incorporate automatic leading and/or trailing-edge zero-blanking control (RBI andRBO). Lamp test (LT) of these types may be performed at any time when theBI/RBO node is at a high level. The AiP74HC/HCT48 contain an overriding blanking input (BI), which can be used to control the lamp intensity by pulsing or to inhibit the outputs.