Features and benefits
- Complies with JEDEC standard no. 7A
- Input levels:
- For 74HC138: CMOS level
- For 74HCT138: TTL level
- Demultiplexing capability
- Multiple input enable for easy expansion
- Ideal for memory chip select decoding
- Active LOW mutually exclusive outputs
- ESD protection:
- HBM JESD22-A114F 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 | VCC (V) | Logic switching levels | Output drive capability (mA) | tpd (ns) | Power dissipation considerations | Tamb (°C) | Rth(j-a) (K/W) | Ψth(j-top) (K/W) | Rth(j-c) (K/W) | Package name |
---|---|---|---|---|---|---|---|---|---|---|---|
74HCT138BQ | Production | 4.5 - 5.5 | TTL | ± 4 | 19 | low | -40~125 | 93 | 14.3 | 63 | DHVQFN16 |
Package
Type number | Orderable part number, (Ordering code (12NC)) | Status | Marking | Package | Package information | Reflow-/Wave soldering | Packing |
---|---|---|---|---|---|---|---|
74HCT138BQ | 74HCT138BQ,115 ( 9352 744 71115 ) | Active | HCT138 | ![]() 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 |
---|---|---|---|---|---|---|---|---|
74HCT138BQ | 74HCT138BQ,115 | 74HCT138BQ | ![]() ![]() | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
Documentation (4)
File name | Title | Type | Date |
---|---|---|---|
74HC_HCT138 | 3-to-8 line decoder/demultiplexer; inverting | Data sheet | 2020-04-07 |
AN11044 | Pin FMEA 74HC/74HCT family | Application note | 2019-01-09 |
hc | hc Spice model | SPICE model | 2013-05-06 |
HCT_USER_GUIDE | HC/T User Guide | User manual | 1997-10-31 |
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 |
---|---|---|---|
hc | hc Spice model | SPICE model | 2013-05-06 |
Ordering, pricing & availability
Type number | Orderable part number | Ordering code (12NC) | Packing | Buy online |
---|---|---|---|---|
74HCT138BQ | 74HCT138BQ,115 | 935274471115 | Reel 7” Q1/T1 or Q2/T3 | 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.