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74HCT390D

Dual decade ripple counter

The 74HC390; 74HCT390 is a dual 4-bit decade ripple counter divided into four separately clocked sections. The counters have two divide-by-2 sections and two divide-by-5 sections. These sections share an asynchronous master reset input (nMR) and can be used in a BCD decade or bi-quinary configuration. If master reset inputs (1MR and 2MR) are used to simultaneously clear all 8 bits of the counter, a number of counting configurations are possible within one package. The separate clocks (nCP0 and nCP1) of each section allow ripple counter or frequency division applications of divide-by-2, 4, 5, 10, 20, 25, 50 or 100. Each section is triggered by the HIGH-to-LOW transition of the clock inputs (nCP0 and nCP1). For BCD decade operation, the nQ0 output is connected to the nCP1 input of the divide-by-5 section. For bi-quinary decade operation, the nQ3 output is connected to the nCP0 input and nQ0 becomes the decade output. A HIGH on the nMR input overrides the clocks and sets the four outputs LOW. This device features reduced input threshold levels to allow interfacing to TTL logic levels. Inputs also include clamp diodes, this enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.

Features and benefits

  • Input levels:

    • For 74HC390: CMOS level

    • For 74HCT390: TTL level

  • Two BCD decade or bi-quinary counters

  • One device can be configured to divide-by-2, 4, 5, 10, 20, 25, 50 or 100

  • Two master reset inputs to clear each decade counter individually

  • Supply voltage range from 4.5 V to 5.5 V

  • High noise immunity

  • Latch-up performance exceeds 100 mA per JESD 78 Class II Level B

  • Complies with JEDEC standard JESD7A (4.5 V to 5.5 V)

  • ESD protection:
    • HBM JESD22-A114F exceeds 2000 V

    • MM JESD22-A115-A exceeds 200 V

  • Specified from -40 °C to +85 °C and from -40 °C to +125 °C

Parametrics

Type number Product status VCC (V) Output drive capability (mA) Logic switching levels tpd (ns) fmax (MHz) Power dissipation considerations Tamb (°C) Rth(j-a) (K/W) Ψth(j-top) (K/W) Rth(j-c) (K/W) Package name
74HCT390D Production 4.5 - 5.5 ± 4 TTL 18 55 low -40~125 76 2.5 34.7 SO16

PCB Symbol, Footprint and 3D Model

Model Name Description

Package

Type number Orderable part number, (Ordering code (12NC)) Status Marking Package Package information Reflow-/Wave soldering Packing
74HCT390D 74HCT390D,653
(933715200653)
Active 74HCT390D SOT109-1
SO16
(SOT109-1)
SOT109-1 SO-SOJ-REFLOW
SO-SOJ-WAVE
WAVE_BG-BD-1
Not available

All type numbers in the table below are discontinued. See the table Discontinuation information for more information.

Type number Orderable part number, (Ordering code (12NC)) Status Marking Package Package information Reflow-/Wave soldering Packing
74HCT390D 74HCT390D,652
(933715200652)
Withdrawn / End-of-life 74HCT390D SOT109-1
SO16
(SOT109-1)
SOT109-1 SO-SOJ-REFLOW
SO-SOJ-WAVE
WAVE_BG-BD-1
SOT109-1_652

Environmental information

Type number Orderable part number Chemical content RoHS RHF-indicator
74HCT390D 74HCT390D,653 74HCT390D rohs rhf rhf

All type numbers in the table below are discontinued. See the table Discontinuation information for more information.

Type number Orderable part number Chemical content RoHS RHF-indicator
74HCT390D 74HCT390D,652 74HCT390D rohs rhf rhf
Quality and reliability disclaimer

Documentation (17)

File name Title Type Date
74HC_HCT390 Dual decade ripple counter Data sheet 2021-10-18
AN11044 Pin FMEA 74HC/74HCT family Application note 2019-01-09
74HCT390D_Nexperia_Product_Reliability 74HCT390D Nexperia Product Reliability Quality document 2023-05-29
HCT_USER_GUIDE HC/T User Guide User manual 1997-10-31
SOT109-1 3D model for products with SOT109-1 package Design support 2020-01-22
Nexperia_package_poster Nexperia package poster Leaflet 2020-05-15
SO16_SOT109-1_mk plastic, small outline package; 16 leads; 1.27 mm pitch; 9.9 mm x 3.9 mm x 1.35 mm body Marcom graphics 2017-01-28
SOT109-1_112 SO16; Tube pack; Standard product orientation Packing information 2021-09-10
SOT109-1_118 SO16; Reel pack for SMD, 13"; Q1/T1 product orientation Packing information 2024-02-19
SOT109-1_139 SO16; Reel pack for SMD, 13"; Q4/T2 product orientation Packing information 2024-02-19
SOT109-1_431 SO16; Reel sulfur barrier pack, SMD, 13" Q1/T1 standard product orientation Orderable part number ending ,431 or Z Ordering code (12NC) ending 431 Packing information 2020-04-27
SOT109-1_652 SO16; Tube pack; Standard product orientation Packing information 2021-09-10
SO-SOJ-REFLOW Footprint for reflow soldering Reflow soldering 2009-10-08
SO-SOJ-WAVE Footprint for wave soldering Wave soldering 2009-10-08
WAVE_BG-BD-1 Wave soldering profile Wave soldering 2021-09-08

Support

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Models

File name Title Type Date
SOT109-1 3D model for products with SOT109-1 package Design support 2020-01-22

PCB Symbol, Footprint and 3D Model

Model Name Description

Ordering, pricing & availability

Type number Orderable part number Ordering code (12NC) Status Packing Packing Quantity Buy online
74HCT390D 74HCT390D,653 933715200653 Active SOT109-1_653 2,500 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.

How does it work?

The interactive datasheets are based on the Nexperia MOSFET precision electrothermal models. With our interactive datasheets you can simply specify your own conditions interactively. Start by changing the values of the conditions. You can do this by using the sliders in the condition fields. By dragging the sliders you will see how the MOSFET will perform at the new conditions set.

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
74HCT390D 74HCT390D,653 933715200653 SOT109-1 Order product