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CD54/74HCT123中文资料德州仪器数据手册PDF规格书
CD54/74HCT123规格书详情
Features
• Overriding Reset Terminates Output Pulse
• Triggering From the Leading or Trailing Edge
• Q and Q Buffered Outputs
• Separate Resets
• Wide Range of Output-Pulse Widths
• Schmitt Trigger on Both A and B Inputs
• Fanout (Over Temperature Range)
- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
• Wide Operating Temperature Range . . . -55oC to 125oC
• Balanced Propagation Delay and Transition Times
• Significant Power Reduction Compared to LSTTL
Logic ICs
• HC Types
- 2V to 6V Operation
- High Noise Immunity: NIL = 30%, NIH = 30%of VCC at
VCC = 5V
• HCT Types
- 4.5V to 5.5V Operation
- Direct LSTTL Input Logic Compatibility,
VIL= 0.8V (Max), VIH = 2V (Min)
- CMOS Input Compatibility, Il ≤ 1μA at VOL, VOH
Description
The ’HC123, ’HCT123, CD74HC423 and CD74HCT423 are
dual monostable multivibrators with resets. They are all
retriggerable and differ only in that the 123 types can be
triggered by a negative to positive reset pulse; whereas the
423 types do not have this feature. An external resistor (RX)
and an external capacitor (CX) control the timing and the
accuracy for the circuit. Adjustment of Rx and CX provides a
wide range of output pulse widths from the Q and Q
terminals. Pulse triggering on the A and B inputs occur at a
particular voltage level and is not related to the rise and fall
times of the trigger pulses.
Once triggered, the output pulse width may be extended by
retriggering inputs A and B. The output pulse can be
terminated by a LOW level on the Reset (R) pin. Trailing
edge triggering (A) and leading edge triggering (B) inputs
are provided for triggering from either edge of the input
pulse. If either Mono is not used each input on the unused
device (A, B, and R) must be terminated high or low.
The minimum value of external resistance, Rx is typically
5kΩ. The minimum value external capacitance, CX, is 0pF.
The calculation for the pulse width is tW = 0.45 RXCX at
VCC = 5V.
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
KINGSIN |
24+ |
SMD |
80000 |
只做自己库存,全新原装进口正品假一赔百,可开13%增 |
询价 | ||
16+ |
5M-101 |
10000 |
进口原装现货/价格优势! |
询价 | |||
sumida |
24+ |
500000 |
行业低价,代理渠道 |
询价 | |||
SUMIDA |
25+ |
NA |
880000 |
明嘉莱只做原装正品现货 |
询价 | ||
SUMIDA |
23+ |
SMD |
6800 |
专注配单,只做原装进口现货 |
询价 | ||
自己工厂 |
24+ |
2580 |
询价 | ||||
KINGSINGO |
21+ |
SMD |
1625 |
只做原装正品,不止网上数量,欢迎电话微信查询! |
询价 | ||
SUMIDA |
13+ |
SMD |
932 |
一级代理,专注军工、汽车、医疗、工业、新能源、电力 |
询价 | ||
SUMIDA |
21+ |
SMD |
932 |
原装现货假一赔十 |
询价 | ||
SUMIDA |
2022+ |
SMD |
1400 |
原厂代理 终端免费提供样品 |
询价 |