SN54S124
- Two Independent VCOs in a 16-Pin Package
- Output Frequency Set by Single External Component:
- Capacitor for Fixed- or Variable-Frequency Operation
- Separate Supply Voltage Pins for Isolation of Frequency Control Inputs and Oscillators from Output Circuitry
- Highly Stable Operation over Specified Temperature and/or Supply Voltage Ranges
- Typical fmax…85 MHz
Typical Power Dissipation…525 mW - Frequency Spectrum…1 Hz to 60 MHz
The 'S124 features two independent voltage-controlled oscillators (VCO) in a single monolithic chip. The output frequency of each VCO is established by an external capacitor in combination with two voltage-sensitive inputs, one for frequency range and one for frequency control. These inputs can be used to vary the output frequency as shown under typical characteristics. These highly stable oscillators can be set to operate at any frequency typically between 0.12 hertz and 85 megahertz.
While the enable input is low, the output is enabled. While the enable input is high, the output is high.
These devices can operate from a single 5-volt supply. However, one set
of supply-voltage and ground pins (VCC and GND) is provided for
the enable, synchronization-gating, and output sections, and a separate set ( GND) and is provided for the
oscillator and associated frequency-control circuits so that effective isolation
can be accomplished in the system.
The enable input of these devices starts or stops the output pulses when it is low or high, respectively. The internal oscillator of the 'S124 is started and stopped by the enable input. The enable input is one standard load; it and the buffered output operate at standard Schottky-clamped TTL levels.
The pulse synchronization-gating section ensures that the first output pulse is neither clipped nor extended. Duty cycle of the square-wave output is fixed at approximately 50 percent.
The SN54S124 is characterized for operation over the full military temperature range of 55°C to 125°C; the SN74S124 is characterized for operation from 0°C to 70°C.
技術資料
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 | SN54S124, SN74S124 データシート (Rev. A) | 2004年 4月 29日 |
購入と品質
- 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
- ファブの拠点
- 組み立てを実施した拠点