b) Carry Output (Note b) 1.0 U.L. 1.0 U.L. 0.5 U.L. 10 U.L. 10 U.L. ORDERING INFORMATION SN54LSXXXJ SN74LSXXXN SN74LSXXXD Ceramic Plastic SOIC NOTES: a) 1 TTL Unit Load (U.L.) = 40 µA HIGH/1.6 mA L.