CD74HCT4538 高速 CMOS 逻辑双路可重触发精密单稳多频振荡器
The ’HC4538 and ’HCT4538 are dual retriggerable/resettable monostable precision multivibrators for fixed voltage timing applications. 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. The propagation delay from trigger input-to-output transition and the propagation delay from reset input-to-output transition are independent of RX and CX.
Leading-edge triggering (A) and trailing edge triggering (B)\ inputs are provided for triggering from either edge of the input pulse. An unused "A" input should be tied to GND and an unused B\ should be tied to VCC
CD74HCT4538 特性
- Retriggerable/Resettable Capability
- Trigger and Reset Propagation Delays Independent of RX, CX
- Triggering from the Leading or Trailing Edge
- Q and Q\ Buffered Outputs Available
- Separate Resets
- Wide Range of Output Pulse Widths
- Schmitt Trigger Input on A and B\ Inputs
- Retrigger Time is Independent of CX
- Fanout (Over Temperature Range)
- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
- Wide Operating Temperature Range . . . –55°C to 125°C
- 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)
CD74HCT4538 芯片订购指南
| 器件 |
状态 |
温度 |
价格（美元） |
封装 | 引脚 |
封装数量 | 封装载体 |
丝印标记 |
| CD74HCT4538E |
ACTIVE |
-55 to 125 |
0.29 | 1ku |
PDIP (N) | 16 |
25 | TUBE |
|
| CD74HCT4538EE4 |
ACTIVE |
-55 to 125 |
0.29 | 1ku |
PDIP (N) | 16 |
25 | TUBE |
|
| CD74HCT4538M |
ACTIVE |
-55 to 125 |
0.32 | 1ku |
SOIC (D) | 16 |
40 | TUBE |
|
| CD74HCT4538M96 |
ACTIVE |
-55 to 125 |
0.26 | 1ku |
SOIC (D) | 16 |
2500 | LARGE T&R |
|
| CD74HCT4538M96E4 |
ACTIVE |
-55 to 125 |
0.26 | 1ku |
SOIC (D) | 16 |
2500 | LARGE T&R |
|
| CD74HCT4538M96G4 |
ACTIVE |
-55 to 125 |
0.26 | 1ku |
SOIC (D) | 16 |
2500 | LARGE T&R |
|
| CD74HCT4538ME4 |
ACTIVE |
-55 to 125 |
0.32 | 1ku |
SOIC (D) | 16 |
40 | TUBE |
|
| CD74HCT4538MG4 |
ACTIVE |
-55 to 125 |
0.32 | 1ku |
SOIC (D) | 16 |
40 | TUBE |
|
| CD74HCT4538MT |
ACTIVE |
-55 to 125 |
0.26 | 1ku |
SOIC (D) | 16 |
250 | SMALL T&R |
|
| CD74HCT4538MTE4 |
ACTIVE |
-55 to 125 |
0.26 | 1ku |
SOIC (D) | 16 |
250 | SMALL T&R |
|
| CD74HCT4538MTG4 |
ACTIVE |
-55 to 125 |
0.26 | 1ku |
SOIC (D) | 16 |
250 | SMALL T&R |
|
CD74HCT4538 质量与无铅数据
| 器件 |
环保计划* |
铅/焊球涂层 |
MSL 等级/回流焊峰 |
环保信息与无铅 (Pb-free) |
DPPM / MTBF / FIT 率 |
| CD74HCT4538E |
Pb-Free (RoHS) |
CU NIPDAU |
N/A for Pkg Type |
CD74HCT4538E |
CD74HCT4538E |
| CD74HCT4538EE4 |
Pb-Free (RoHS) |
CU NIPDAU |
N/A for Pkg Type |
CD74HCT4538EE4 |
CD74HCT4538EE4 |
| CD74HCT4538M |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
CD74HCT4538M |
CD74HCT4538M |
| CD74HCT4538M96 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
CD74HCT4538M96 |
CD74HCT4538M96 |
| CD74HCT4538M96E4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
CD74HCT4538M96E4 |
CD74HCT4538M96E4 |
| CD74HCT4538M96G4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
CD74HCT4538M96G4 |
CD74HCT4538M96G4 |
| CD74HCT4538ME4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
CD74HCT4538ME4 |
CD74HCT4538ME4 |
| CD74HCT4538MG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
CD74HCT4538MG4 |
CD74HCT4538MG4 |
| CD74HCT4538MT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
CD74HCT4538MT |
CD74HCT4538MT |
| CD74HCT4538MTE4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
CD74HCT4538MTE4 |
CD74HCT4538MTE4 |
| CD74HCT4538MTG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
CD74HCT4538MTG4 |
CD74HCT4538MTG4 |
CD74HCT4538 应用技术支持与电子电路设计开发资源下载
- CD74HCT4538 数据资料 dataSheet 下载.PDF
- TI 德州仪器特殊逻辑产品选型与价格 . xls
- Shelf-Life Evaluation of Lead-Free Component Finishes (PDF 1305 KB)
- Understanding and Interpreting Standard-Logic Data Sheets (PDF 857 KB)
- TI IBIS File Creation, Validation, and Distribution Processes (PDF 380 KB)
- Implications of Slow or Floating CMOS Inputs (PDF 101 KB)
- CMOS Power Consumption and CPD Calculation (PDF 89 KB)
- Designing With Logic (PDF 186 KB)
- Live Insertion (PDF 150 KB)
- Input and Output Characteristics of Digital Integrated Circuits (PDF 1708 KB)
- Using High Speed CMOS and Advanced CMOS in Systems With Multiple Vcc (PDF 43 KB)
- HiRel Unitrode Power Management Brochure (PDF 206 KB)
- LOGIC Pocket Data Book (PDF 6001 KB)
- HiRel Unitrode Power Management Brochure (PDF 206 KB)
- Logic Cross-Reference (PDF 2938 KB)
