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.