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    74HCT193D

    Presettable synchronous 4-bit binary up/down counter

    The 74HC193; 74HCT193 is a 4-bit synchronous binary up/down counter. Separate up/down clocks, CPU and CPD respectively, simplify operation. The outputs change state synchronously with the LOW-to-HIGH transition of either clock input. If the CPU clock is pulsed while CPD is held HIGH, the device will count up. If the CPD clock is pulsed while CPU is held HIGH, the device will count down. Only one clock input can be held HIGH at any time to guarantee predictable behavior. The device can be cleared at any time by the asynchronous master reset input (MR); it may also be loaded in parallel by activating the asynchronous parallel load input (PL). The terminal count up (TCU) and terminal count down (TCD) outputs are normally HIGH. When the circuit has reached the maximum count state of 15, the next HIGH-to-LOW transition of CPU will cause TCU to go LOW. TCU will stay LOW until CPU goes HIGH again, duplicating the count up clock. Likewise, the TCD output will go LOW when the circuit is in the zero state and the CPD goes LOW. The terminal count outputs can be used as the clock input signals to the next higher order circuit in a multistage counter, since they duplicate the clock waveforms. Multistage counters will not be fully synchronous, since there is a slight delay time difference added for each stage that is added. The counter may be preset by the asynchronous parallel load capability of the circuit. Information present on the parallel data inputs (D0 to D3) is loaded into the counter and appears on the outputs (Q0 to Q3) regardless of the conditions of the clock inputs when the parallel load (PL) input is LOW. A HIGH level on the master reset (MR) input will disable the parallel load gates, override both clock inputs and set all outputs (Q0 to Q3) LOW. If one of the clock inputs is LOW during and after a reset or load operation, the next LOW-to-HIGH transition of that clock will be interpreted as a legitimate signal and will be counted. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.

    Features and benefits

    • Wide supply voltage range from 2.0 to 6.0 V

    • CMOS low power dissipation

    • High noise immunity

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

    • Input levels:

      • For 74HC193: CMOS level

      • For 74HCT193: TTL level

    • Synchronous reversible 4-bit binary counting

    • Asynchronous parallel load

    • Asynchronous reset

    • Expandable without external logic

    • Complies with JEDEC standards:

      • JESD8C (2.7 V to 3.6 V)

      • JESD7A (2.0 V to 6.0 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 -40 °C to +125 °C.

    参数类型

    型号 Product status VCC (V) Output drive capability (mA) Logic switching levels tpd (ns) Power dissipation considerations Tamb (°C) Rth(j-a) (K/W) Ψth(j-top) (K/W) Rth(j-c) (K/W) Package name
    74HCT193D Production 4.5 - 5.5 ± 4 TTL 20 low -40~125 66 1.0 23 SO16

    PCB Symbol, Footprint and 3D Model

    Model Name 描述

    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
    74HCT193D 74HCT193D,653
    (933715100653)
    Active 74HCT193D SOT109-1
    SO16
    (SOT109-1)
    SOT109-1 SO-SOJ-REFLOW
    SO-SOJ-WAVE
    WAVE_BG-BD-1
    Not available

    环境信息

    型号 可订购的器件编号 化学成分 RoHS RHF指示符
    74HCT193D 74HCT193D,653 74HCT193D rohs rhf rhf
    品质及可靠性免责声明

    文档 (12)

    文件名称 标题 类型 日期
    74HC_HCT193 Presettable synchronous 4-bit binary up/down counter Data sheet 2024-03-14
    AN11044 Pin FMEA 74HC/74HCT family Application note 2019-01-09
    SOT109-1 3D model for products with SOT109-1 package Design support 2020-01-22
    hct193 74HCT193 IBIS model IBIS model 2022-10-11
    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 plastic, small outline package; 16 leads; 1.27 mm pitch; 9.9 mm x 3.9 mm x 1.75 mm body Package information 2023-11-07
    74HCT193D_Nexperia_Product_Reliability 74HCT193D Nexperia Product Reliability Quality document 2023-05-29
    SO-SOJ-REFLOW Footprint for reflow soldering Reflow soldering 2009-10-08
    HCT_USER_GUIDE HC/T User Guide User manual 1997-10-31
    SO-SOJ-WAVE Footprint for wave soldering Wave soldering 2009-10-08
    WAVE_BG-BD-1 Wave soldering profile Wave soldering 2021-09-08

    支持

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    模型

    文件名称 标题 类型 日期
    hct193 74HCT193 IBIS model IBIS model 2022-10-11
    SOT109-1 3D model for products with SOT109-1 package Design support 2020-01-22

    PCB Symbol, Footprint and 3D Model

    Model Name 描述

    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
    74HCT193D 74HCT193D,653 933715100653 Active SOT109-1_653 2,500 订单产品

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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
    74HCT193D 74HCT193D,653 933715100653 SOT109-1 订单产品
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