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74HCT390PW

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: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V

    • CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V

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

参数类型

型号 Product status VCC (V) Output drive capability (mA) Logic switching levels tpd (ns) fmax (MHz) Power dissipation considerations Tamb (°C) Package name
74HCT390PW Production 4.5 - 5.5 ± 4 TTL 18 55 low -40~125 TSSOP16

封装

型号 可订购的器件编号,(订购码(12NC)) 状态 标示 封装 外形图 回流焊/波峰焊 包装
74HCT390PW 74HCT390PWHL
(935691209118)
Active 4HCT390 SOT403-1
TSSOP16
(SOT403-1)
SOT403-1 SSOP-TSSOP-VSO-WAVE
SOT403-1_118

环境信息

型号 可订购的器件编号 化学成分 RoHS RHF指示符
74HCT390PW 74HCT390PWHL 74HCT390PW rohs rhf rhf
品质及可靠性免责声明

文档 (8)

文件名称 标题 类型 日期
74HC_HCT390 Dual decade ripple counter Data sheet 2024-03-19
SOT403-1 3D model for products with SOT403-1 package Design support 2020-01-22
Nexperia_package_poster Nexperia package poster Leaflet 2020-05-15
TSSOP16_SOT403-1_mk plastic, thin shrink small outline package; 16 leads; 0.65 mm pitch; 5 mm x 4.4 mm x 1.1 mm body Marcom graphics 2017-01-28
SOT403-1 plastic, thin shrink small outline package; 16 leads; 5 mm x 4.4 mm x 1.2 mm body Package information 2023-11-08
SOT403-1_118 TSSOP16; Reel pack for SMD, 13"; Q1/T1 product orientation Packing information 2020-04-21
74HCT390PW_Nexperia_Product_Reliability 74HCT390PW Nexperia Product Reliability Quality document 2023-05-29
SSOP-TSSOP-VSO-WAVE Footprint for wave soldering Wave soldering 2009-10-08

支持

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模型

文件名称 标题 类型 日期
SOT403-1 3D model for products with SOT403-1 package Design support 2020-01-22

订购、定价与供货

型号 Orderable part number Ordering code (12NC) 状态 包装 Packing Quantity 在线购买
74HCT390PW 74HCT390PWHL 935691209118 Active SOT403-1_118 2,500 订单产品

样品

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样品订单通常需要2-4天寄送时间。

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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.

可订购部件

型号 可订购的器件编号 订购代码(12NC) 封装 从经销商处购买
74HCT390PW 74HCT390PWHL 935691209118 SOT403-1 订单产品