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CD4045B

アクティブ

CMOS 21 段カウンタ

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データシート

CD4045B

アクティブ
データシート ご注文はこちら

製品詳細

Function Counter Bits (#) 2 Technology family CD4000 Supply voltage (min) (V) 3 Supply voltage (max) (V) 18 Input type Standard CMOS Output type Push-Pull Features Balanced outputs, Positive input clamp diode, Standard speed (tpd > 50ns) Operating temperature range (°C) -55 to 125 Rating Catalog
Function Counter Bits (#) 2 Technology family CD4000 Supply voltage (min) (V) 3 Supply voltage (max) (V) 18 Input type Standard CMOS Output type Push-Pull Features Balanced outputs, Positive input clamp diode, Standard speed (tpd > 50ns) Operating temperature range (°C) -55 to 125 Rating Catalog
  • Very low operating dissipation . . . . . <1 mW (typ.) @ VDD = 5 V, f = 1 MHz
  • Output drivers with sink or source capability . . . . . 7 mA (typ.) @ VDD = 5 V
  • Medium speed (typ.) . . . f = 25 MHz @ VDD = 10 V
  • 100% tested for quiescent current at 20 V
  • 5-V, 10-V, and 15-V parametric ratings
  • Meets all requirements of JEDEC Tentative Standard No. 13B, "Standard Specifications for Description of 'B' Series CMOS Devices"
  • Applications
    • Digital equipment in which ultra-low dissipation and/or operation using a battery source is required.
    • Accurate timing from a crystal oscillator for timing applications such as wall clocks, table clocks, automobile clocks, and digital timing references in any circuit requiring accurately timed outputs at various intervals in the counting sequence.
    • Driving miniature synchronous motors, stepping motors, or external bipolar transistors in push-pull fashion.
  • Very low operating dissipation . . . . . <1 mW (typ.) @ VDD = 5 V, f = 1 MHz
  • Output drivers with sink or source capability . . . . . 7 mA (typ.) @ VDD = 5 V
  • Medium speed (typ.) . . . f = 25 MHz @ VDD = 10 V
  • 100% tested for quiescent current at 20 V
  • 5-V, 10-V, and 15-V parametric ratings
  • Meets all requirements of JEDEC Tentative Standard No. 13B, "Standard Specifications for Description of 'B' Series CMOS Devices"
  • Applications
    • Digital equipment in which ultra-low dissipation and/or operation using a battery source is required.
    • Accurate timing from a crystal oscillator for timing applications such as wall clocks, table clocks, automobile clocks, and digital timing references in any circuit requiring accurately timed outputs at various intervals in the counting sequence.
    • Driving miniature synchronous motors, stepping motors, or external bipolar transistors in push-pull fashion.

CD4045B is a timing circuit consisting of 21 counter stages, two output-shaping flip-flops, two inverter output drivers, and input inverters for use in a crystal oscillator. The CD4045B configuration provides 21 flip-flop counting stages, and two flip-flops for shaping the output waveform for a 3.125% duty cycle. Push-pull operation is provided by the inverter output drivers.

The first inverter is intended for use as a crystal oscillator/amplifier. However, it may be used as a normal logic inverter if desired. A crystal oscillator circuit can be made less sensitive to voltage-supply variations by the user of source resistors. In this device, the sources of the p and n transistors have been brought out to package terminals. If external resistors are not required, the sources must be shorted to their respective substrates (Sp to VDD, Sn to VSS). See Fig. 1. The first inverter in conjunction with an outboard inverter, such as 1/6 CD4069, and RX, CX, and RS can also be used to construct an RC oscillator. The following data is supplied as a guide in the selection of values for RX, RS, and CX used in Fig. 11:

  1. RX max = 10 M and CX = 50 pF
  2. CX max = 25 µF with RS = 560 k

The CD4045B types are supplied in 16-lead dual-in-line plastic packages (E suffix), 16-lead small-outline package (NSR suffix), and 16-lead thin shrink small-outline packages (PW and PWR suffixes).

CD4045B is a timing circuit consisting of 21 counter stages, two output-shaping flip-flops, two inverter output drivers, and input inverters for use in a crystal oscillator. The CD4045B configuration provides 21 flip-flop counting stages, and two flip-flops for shaping the output waveform for a 3.125% duty cycle. Push-pull operation is provided by the inverter output drivers.

The first inverter is intended for use as a crystal oscillator/amplifier. However, it may be used as a normal logic inverter if desired. A crystal oscillator circuit can be made less sensitive to voltage-supply variations by the user of source resistors. In this device, the sources of the p and n transistors have been brought out to package terminals. If external resistors are not required, the sources must be shorted to their respective substrates (Sp to VDD, Sn to VSS). See Fig. 1. The first inverter in conjunction with an outboard inverter, such as 1/6 CD4069, and RX, CX, and RS can also be used to construct an RC oscillator. The following data is supplied as a guide in the selection of values for RX, RS, and CX used in Fig. 11:

  1. RX max = 10 M and CX = 50 pF
  2. CX max = 25 µF with RS = 560 k

The CD4045B types are supplied in 16-lead dual-in-line plastic packages (E suffix), 16-lead small-outline package (NSR suffix), and 16-lead thin shrink small-outline packages (PW and PWR suffixes).
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種類 タイトル 最新の英語版をダウンロード 日付
* データシート CD4045B TYPES データシート (Rev. C) 2003年 6月 27日

購入と品質

記載されている情報：
  • RoHS
  • REACH
  • デバイスのマーキング
  • リード端子の仕上げ / ボールの原材料
  • MSL 定格 / ピーク リフロー
  • MTBF/FIT 推定値
  • 使用原材料
  • 認定試験結果
  • 継続的な信頼性モニタ試験結果
記載されている情報：
  • ファブの拠点
  • 組み立てを実施した拠点

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