
| FLYiNG 零件編號 | IC74HC244D653NEXPERIA | 
| FLYiNG 散料庫存 | 電洽/Contact | 
| FLYiNG 標準包裝庫存 | 電洽/Contact | 
| 製造商/品牌商 | NEXPERIA | 
| 製造商/品牌商零件編號 | 74HC244D,653 | 
| 說明 | 74HC244D,653 SO-20 NXP | 
| 無鉛狀態 / RoHS 指令狀態 | RoHS | 

| 積體電路類型 | CMOS IC | 
| 輸入行數 | 8 Input | 
| 輸出行數 | 8 Output | 
| 極性 | Non-Inverting | 
| 輸出電流 | -7.8mA~7.8mA | 
| 靜止電流 | 8 uA | 
| 電源電壓 | 2~6 V | 
| 工作溫度 | -40~125°C | 
| 封裝/外殼 | SO-20 | 
| 安裝類型 | SMD 表面黏著式 | 
| 標準包裝數量 | 2000/REEL | 

							文件:74HC244; 74HCT244.png) 
74HC244; 74HCT244
Octal buffer/line driver; 3-state
General description
The 74HC244; 74HCT244 is an 8-bit buffer/line driver with 3-state outputs. The device can be used as two 4-bit buffers or one 8-bit buffer. The device features two output enables (1OE and 2OE), each controlling four of the 3-state outputs. A HIGH on nOE causes the outputs to assume a high-impedance OFF-state. Inputs include clamp diodes that enable the use of current limiting resistors to interface inputs to voltages in excess of VCC.
 
Features and benefits
						
					.png) 
74HC244; 74HCT244
Octal buffer/line driver; 3-state
General description
The 74HC244; 74HCT244 is an 8-bit buffer/line driver with 3-state outputs. The device can be used as two 4-bit buffers or one 8-bit buffer. The device features two output enables (1OE and 2OE), each controlling four of the 3-state outputs. A HIGH on nOE causes the outputs to assume a high-impedance OFF-state. Inputs include clamp diodes that enable the use of current limiting resistors to interface inputs to voltages in excess of VCC.
- Wide supply voltage range from 2.0 V 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 74HC244: CMOS level
- For 74HCT244: TTL level
 
- Octal bus interface
	- 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
 
- Multiple package options
- Specified from -40 °C to +85 °C and -40 °C to +125 °C
74HC244; 74HCT244
八位緩衝器/線驅動器(3態輸出)
一般描述
74HC244 和 74HCT244 是具有 3 态輸出的 8 位緩衝器/線驅動器。該元件可作為兩個 4 位緩衝器或一個 8 位緩衝器使用。其特點是具有兩個獨立的輸出使能端(1OE 和 2OE),每個使能端可控制 4 個 3 態輸出。當 nOE 為高電位時,對應的輸出進入高阻抗(OFF)狀態。輸入端內建箝位二極體,可透過限流電阻與高於 VCC 的電壓相連接。
特點與優勢
- 寬電源電壓範圍:2.0V 至 6.0V
- 低功耗 CMOS 設計
- 高抗噪能力
- Latch-up 抑制能力超過 100mA(符合 JESD 78 Class II Level B)
- 輸入電平標準:
	- 74HC244:CMOS 電平
- 74HCT244:TTL 電平
 
- 八位匯流排接口
- 符合 JEDEC 標準:
	- JESD8C(2.7V 至 3.6V)
- JESD7A(2.0V 至 6.0V)
 
- ESD 保護等級:
	- HBM(人體模型):符合 ANSI/ESDA/JEDEC JS-001 Class 2,超過 2000V
- CDM(充電裝置模型):符合 ANSI/ESDA/JEDEC JS-002 Class C3,超過 1000V
 
- 多種封裝選擇
- 工作溫度範圍:-40°C 至 +85°C,部分型號可達 -40°C 至 +125°C



 
 