74LVC138ADB,112 Nexperia

74LVC138A 3-to-8 line decoder/demultiplexer inverting Rev. 8 20 September 2021 Product data sheet 1. General description The 74LVC138A decodes three binary weighted address inputs (A0, A1 and A2) to eight mutually exclusive outputs (Y0 to Y7). The 74LVC138A features three enable inputs (E1, E2 and E3). Every output will be HIGH unless E1 and E2 are LOW and E3 is HIGH. This multiple enable function allows easy parallel expansion of the 74LVC138A to a 1-of-32 (5 to 32 lines) decoder with just four 74LVC138A ICs and one inverter. The 74LVC138A can be used as an eight output demultiplexer by using one of the active LOW enable inputs as the data input and the remaining enable inputs as strobes. Inputs can be driven from either 3.3 V or 5 V devices. This feature allows the use of these devices as translators in mixed 3.3 V and 5 V environments. Schmitt-trigger action at all inputs makes the circuit tolerant of slower input rise and fall times. 2. Features and benefits Overvoltage tolerant inputs to 5.5 V Wide supply voltage range from 1.2 V to 3.6 V CMOS low power consumption Direct interface with TTL levels Demultiplexing capability Multiple input enable for easy expansion Ideal for memory chip select decoding Mutually exclusive outputs Output drive capability 50 transmission lines at 125 C Complies with JEDEC standard: JESD8-7A (1.65 V to 1.95 V) JESD8-5A (2.3 V to 2.7 V) JESD8-C/JESD36 (2.7 V to 3.6 V) ESD protection: HBM JESD22-A114F exceeds 2000 V MM JESD22-A115-B exceeds 200 V CDM JESD22-C101E exceeds 1000 V Specified from -40 C to +85 C and from -40 C to +125 C 3. Ordering information Table 1. Ordering information Type number Package Temperature range Name Description Version 74LVC138AD -40 C to +125 C SO16 plastic small outline package 16 leads SOT109-1 body width 3.9 mm 74LVC138APW -40 C to +125 C TSSOP16 plastic thin shrink small outline package 16 leads SOT403-1 body width 4.4 mm 74LVC138ABQ -40 C to +125 C DHVQFN16 plastic dual in-line compatible thermal enhanced SOT763-1 very thin quad flat package no leads 16 terminals body 2.5 3.5 0.85 mmNexperia 74LVC138A 3-to-8 line decoder/demultiplexer inverting 4. Functional diagram DX 15 X/Y 15 0 0 1 1 14 14 0 1 1 1 2 13 2 13 0 G 2 1 A0 Y0 15 2 2 7 3 12 3 12 Y1 14 2 A1 2 3 4 3 11 11 3 A2 Y2 13 4 4 Y3 12 10 10 4 4 & & 5 5 11 E1 Y4 4 9 9 5 5 6 6 10 Y5 E2 EN 5 7 7 6 6 7 7 Y6 9 E3 6 7 Y7 mna371 mna370 (a) (b) Fig. 1. Logic symbol Fig. 2. IEC logic symbol Y0 15 1 A0 Y1 14 A1 2 Y2 13 A2 3 Y3 12 3-to-8 ENABLE Y4 11 DECODER EXITING Y5 10 Y6 9 Y7 7 4 E1 5 E2 6 E3 mna372 Fig. 3. Functional diagram 5. Pinning information 5.1. Pinning 74LVC138A A0 1 16 V CC 74LVC138A A1 2 15 Y0 A2 3 14 Y1 A0 1 16 V CC A1 2 15 Y0 4 13 E1 Y2 A2 3 14 Y1 E2 5 12 Y3 E1 4 13 Y2 E2 5 12 Y3 E3 6 11 Y4 E3 6 11 Y4 Y7 7 10 Y5 Y7 7 10 Y5 GND 8 9 Y6 GND 8 9 Y6 001aad033 aaa-029538 Fig. 4. Pin configuration SOT109-1 (SO16) Fig. 5. Pin configuration SOT403-1 (TSSOP16) 74LVC138A All information provided in this document is subject to legal disclaimers. Nexperia B.V. 2021. All rights reserved Product data sheet Rev. 8 20 September 2021 2 / 14