onsemi 74ACT138
The AC138/ACT138 is a high−speed 1−of−8 decoder/demultiplexer. This device is ideally suited for high−speed bipolar memory chip select address decoding.GENERAL DESCRIPTION
The multiple input enables allow parallel expansion to a 1−of−24 decoder using just three AC138/ACT138 devices or a 1−of−32 decoder using four AC138/ACT138 devices and one inverterFEATURES
● ICC Reduced by 50%● Demultiplexing Capability
● Multiple Input Enable for Easy Expansion
● Active LOW Mutually Exclusive Outputs
● Outputs Source/Sink 24 mA
● ACT138 Has TTL Compatible Inputs
● These are Pb−Free Devices VCC O0 O1 O2 O3 O4 O5 O6 16 15 14 13 12 11 10 9 DATA SHEET 16 1 16 1 MARKING DIAGRAMS 16 SOIC−16 CASE 751BG 1 XXXXXX AWLYWW TSSOP−16 CASE 948AH 16 XXX XXX ALYWG G 1 XXX = Specific Device Code A = Assembly Location WL or L = Wafer Lot Y = Year WW or W = Work Week G or G = Pb−Free Package (Note: Microdot may be in either location) ORDERING INFORMATION See detailed ordering and shipping information on page 8 of this data sheet. 12345678 A0 A1 A2 E1 E2 E3 O7 GND Figure 1. Pinout: 16−Lead Packages Conductors (Top View) A0 A1 A2 E1 E2 E3 O0 O1 O2 O3 O4 O5 O6 O7 Figure 2.