74LV138BQ PCB Symbol, Footprint & ECAD Model

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.

3-to-8 line decoder/demultplexer; inverting

Buy from Nexperia

SKU	Stock*	MOQ	Price per unit**	Quantity

Buy from distributors

Seller	SKU	Stock	MOQ		1	10	100	1,000	10,000	Purchase

Seller	SKU	Stock	MOQ		1	10	100	1,000	10,000	Purchase

Seller	SKU	Stock	MOQ		1	10	100	1,000	10,000	Purchase

Seller	SKU	Stock	MOQ		1	10	100	1,000	10,000	Purchase

* Stock values are subject to change
** Displayed price per unit is based on small quantity orders
*** Authorized resellers for overstock, mature, and discontinued products which are warranted for reliability by the reseller, no longer by Nexperia

Features

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

Target 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	Outline version	Reflow-/Wave soldering	Packing
74LV138BQ	74LV138BQ,115 ( 9352 855 77115 )	Active	LV138	DHVQFN16 (SOT763-1)	SOT763-1		Reel 7" Q1/T1

Quality, reliability & chemical content

Type number	Orderable part number	Chemical content	RoHS / RHF	EFR	IFR	MTBF (hour)	MSL	MSL leadfree
74LV138BQ	74LV138BQ,115	74LV138BQ		144.9	10.23	9.78E7	1	1

Quality and reliability disclaimer

Series

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

Documentation (4)

File name	Title	Type	Date
74LV138	3-to-8 line decoder/demultplexer; inverting	Data sheet	2018-02-05
lv	lv Spice model	SPICE model	2013-05-06
SOT763-1_115	DHVQFN16; Reel pack, SMD, 7" Q1/T1 standard product orientation Orderable part number ending ,115 or X Ordering code (12NC) ending 115	Packing	2016-07-05
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	Outline drawing	2018-11-14

Support

If you are in need of design/technical support, let us know and fill in the answer form, we'll get back to you shortly.

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	Order product

Sample

As a Nexperia customer you can order samples via our sales organization or directly via our Online Sample Store: https://extranet.nexperia.com.

Sample orders normally take 2-4 days for delivery.

If you do not have a direct account with Nexperia our network of global and regional distributors is available and equipped to support you with Nexperia samples.