74LV138

3-to-8 line decoder/demultplexer; inverting

The 74LV138 is a low-voltage Si-gate CMOS device that is pin and function compatible with 74HC138 and 74HCT138.

The 74LV138 is a 3-to-8 line decoder/demultiplexer. It accepts three binary weighted address inputs (A0, A1 and A2) and, when enabled, provides eight mutually exclusive active LOW outputs (Y0 to Y7).

There are three enable inputs: two active LOW (E1 and E2) and one active HIGH (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 device to a 1-of-32 (5 lines to 32 lines) decoder with just four 74LV138 devices 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. Unused enable inputs must be permanently tied to their appropriate active HIGH or LOW state.

Features and benefits

Wide operating voltage: 1.0 V to 5.5 V
Optimized for low voltage applications: 1.0 V to 3.6 V
Accepts TTL input levels between V_CC = 2.7 V and V_CC = 3.6 V
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
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

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
74LV138D	Production	1.0 - 5.5	TTL	± 12	12	low	-40~125	81	4.5	39.5	SO16
74LV138DB NRND	Not for design in	1.0 - 5.5	TTL	+/- 12	12	low	-40~125	148	42.0		SSOP16
74LV138PW	Production	1.0 - 5.5	TTL	± 12	12	low	-40~125	115	2.2	43	TSSOP16

Package

Type number	Package	Package information	Reflow-/Wave soldering	Packing	Status	Marking	Orderable part number, (Ordering code (12NC))
74LV138BQ	DHVQFN16 (SOT763-1)	SOT763-1		Reel 7” Q1/T1 or Q2/T3	Active	LV138	74LV138BQ,115 ( 9352 855 77115 )
74LV138D	SO16 (SOT109-1)	SOT109-1	SO-SOJ-REFLOW SO-SOJ-WAVE	Reel 13" Q1/T1	Active	74LV138D	74LV138D,118 ( 9350 631 90118 )
74LV138D	SO16 (SOT109-1)	SOT109-1	SO-SOJ-REFLOW SO-SOJ-WAVE	Bulk Pack	Active	74LV138D	74LV138D,112 ( 9350 631 90112 )
74LV138DB NRND	SSOP16 (SOT338-1)	SOT338-1	SSOP-TSSOP-VSO-REFLOW SSOP-TSSOP-VSO-WAVE	Reel 13" Q1/T1	Active	LV138	74LV138DB,118 ( 9351 659 60118 )
74LV138DB NRND	SSOP16 (SOT338-1)	SOT338-1	SSOP-TSSOP-VSO-REFLOW SSOP-TSSOP-VSO-WAVE	Bulk Pack	Active	LV138	74LV138DB,112 ( 9351 659 60112 )
74LV138PW	TSSOP16 (SOT403-1)	SOT403-1	SSOP-TSSOP-VSO-WAVE	Reel 13" Q1/T1	Active	LV138	74LV138PW,118 ( 9351 743 90118 )
74LV138PW	TSSOP16 (SOT403-1)	SOT403-1	SSOP-TSSOP-VSO-WAVE	Bulk Pack	Active	LV138	74LV138PW,112 ( 9351 743 90112 )

Quality, reliability & chemical content

Type number	Orderable part number	Chemical content	Leadfree conversion date	EFR	IFR	MTBF (hour)	MSL	MSL leadfree
74LV138BQ	74LV138BQ,115	74LV138BQ	Always Pb-free	144.9	10.23	9.78E7	1	1
74LV138D	74LV138D,118	74LV138D	week 6, 2004	144.9	10.23	9.78E7	1	1
74LV138D	74LV138D,112	74LV138D	week 6, 2004	144.9	10.23	9.78E7	1	1
74LV138DB NRND	74LV138DB,118	74LV138DB	week 12, 2005				1	1
74LV138DB NRND	74LV138DB,112	74LV138DB	week 12, 2005				1	1
74LV138PW	74LV138PW,118	74LV138PW	week 17, 2005	144.9	10.23	9.78E7	1	1
74LV138PW	74LV138PW,112	74LV138PW	week 17, 2005	144.9	10.23	9.78E7	1	1

Quality and reliability disclaimer

Documentation (12)

File name	Title	Type	Date
74LV138	3-to-8 line decoder/demultplexer; inverting	Data sheet	2018-02-05
Nexperia_Selection_guide_2020	Nexperia Selection Guide 2020	Selection guide	2020-01-31
lv	lv Spice model	SPICE model	2013-05-06
SOT763-1	plastic, leadless dual in-line compatible thermal enhanced very thin quad flat package; 16 terminals; 0.5 mm pitch; 3.5 mm x 2.5 mm x 1 mm body	Package information	2020-04-21
SO-SOJ-REFLOW	Footprint for reflow soldering	Reflow soldering	2009-10-08
SO-SOJ-WAVE	Footprint for wave soldering	Wave soldering	2009-10-08
SOT109-1	plastic, small outline package; 16 leads; 1.27 mm pitch; 9.9 mm x 3.9 mm x 1.35 mm body	Package information	2020-04-21
SSOP-TSSOP-VSO-WAVE	Footprint for wave soldering	Wave soldering	2009-10-08
SOT403-1	plastic, thin shrink small outline package; 16 leads; 5 mm x 4.4 mm x 1.1 mm body	Package information	2020-04-21
SSOP-TSSOP-VSO-REFLOW	Footprint for reflow soldering	Reflow soldering	2009-10-08
SSOP-TSSOP-VSO-WAVE	Footprint for wave soldering	Wave soldering	2009-10-08
SOT338-1	plastic, shrink small outline package; 16 leads; 0.65 mm pitch; 6.2 mm x 5.3 mm x 2 mm body	Package information	2020-04-21

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Models

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

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