74LV138BQ

3-to-8 line decoder/demultiplexer; inverting

The 74LV138 decodes three binary weighted address inputs (A0, A1 and A2) to eight mutually exclusive outputs (Y0 to Y7). The 74LVC138A features three enable inputs (Y1, Y2 and E3). Every output will be HIGH unless Y1 and Y2 are LOW and E3 is HIGH. This multiple enable function allows easy parallel expansion of the 74LV138 to a 1-of-32 (5 to 32 lines) decoder with just four 74LV138 ICs and one inverter. The 74LV138 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 include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess V_CC.

3-to-8 line decoder/demultiplexer; inverting

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Features and benefits

Wide supply voltage range from 1.0 to 5.5 V
Optimized for low voltage applications: 1.0 V to 3.6 V
CMOS low power dissipation
Direct interface with TTL levels
Typical output ground bounce < 0.8 V at V_CC = 3.3 V and T_amb = 25 °C
Typical HIGH-level output voltage (V_OH) undershoot: > 2 V at V_CC = 3.3 V and T_amb = 25 °C
Demultiplexing capability
Multiple input enable for easy expansion
Ideal for memory chip select decoding
Active LOW mutually exclusive outputs
Latch-up performance exceeds 100 mA per JESD 78 Class II Level B
Complies with JEDEC standards
- JESD8-7 (1.65 V to 1.95 V)
- JESD8-5 (2.3 V to 2.7 V)
- JESD8C (2.7 V to 3.6 V)
- JESD36 (4.5 V to 5.5 V)
ESD protection:
- HBM JESD22-A114E exceeds 2000 V
- MM JESD22-A115-A exceeds 200 V
Multiple package options
Specified from -40 °C to +85 °C and from -40 °C to +125 °C

Applications

Parametrics

Type number	Product status	V_CC (V)	Logic switching levels	Output drive capability (mA)	t_pd (ns)	Power dissipation considerations	T_amb (°C)	R_th(j-a) (K/W)	Ψ_th(j-top) (K/W)	R_th(j-c) (K/W)	Package name
74LV138BQ	Production	1.0 - 5.5	TTL	± 12	12	low	-40~125	83	6.5	50	DHVQFN16

Package

Type number	Orderable part number, (Ordering code (12NC))	Status	Marking	Package	Package information	Reflow-/Wave soldering	Packing
74LV138BQ	74LV138BQ,115 ( 9352 855 77115 )	Active	LV138	DHVQFN16 (SOT763-1)	SOT763-1		Reel 7” Q1/T1 or Q2/T3

Quality, reliability & chemical content

Type number	Orderable part number	Chemical content	RoHS / RHF	EFR	IFR	MTBF (hour)	MSL	MSL leadfree
74LV138BQ	74LV138BQ,115	74LV138BQ		39.3	1.3	7.69E8	1	1

Quality and reliability disclaimer

Series

74LV138 - 3-to-8 line decoder/demultiplexer; inverting

Documentation (2)

File name	Title	Type	Date
74LV138	3-to-8 line decoder/demultiplexer; inverting	Data sheet	2021-07-22
lv	lv Spice model	SPICE model	2013-05-06

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Models

File name	Title	Type	Date
lv	lv Spice model	SPICE model	2013-05-06

Ordering, pricing & availability

Type number	Orderable part number	Ordering code (12NC)	Packing	Buy online
74LV138BQ	74LV138BQ,115	935285577115	Reel 7” Q1/T1 or Q2/T3	Order product

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