ACT1284,SN74ACT1284DW,SOIC-20三态输出的7位总线接口IC

供应ACT1284三态输出的7位总线接口IC

说明：

ACT1284设备是专为异步双向通信数据总线之间。控制函数最小化外部时序要求。
　　
　　允许数据传输设备无论是在a或b方向位1、2、3和4,根据逻辑水平方向控制(DIR)输入。位5、6和7,然而,总是发送在a到b的方向。
　　
　　输出驱动对于每个模式取决于高驱动(HD)控制销。当HD高、高

The ’ACT1284 devices are designed for asynchronous two-way communication between data buses. The control function minimizes external timing requirements.

The devices allow data transmission in either the A-to-B or the B-to-A direction for bits 1, 2, 3, and 4, depending on the logic level at the direction-control (DIR) input. Bits 5, 6, and 7, however, always transmit in the A-to-B direction.

The output drive for each mode is determined by the high-drive (HD) control pin. When HD is high, the high drive is delivered by the totem-pole configuration, and when HD is low, the outputs are open drain. This meets the drive requirements as specified in the IEEE 1284-I (level-1 type) and the IEEE 1284-II (level-2 type) parallel peripheral-interface specification.

特性：

4.5-V to 5.5-V V_CC Operation
Inputs Accept Voltages to 5.5 V
Max t_pd of 20 ns at 5 V
3-State Outputs Directly Drive Bus Lines
Flow-Through Architecture Optimizes PCB Layout
Center-Pin V_CC and GND Configurations Minimize High-Speed Switching Noise
ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)
Designed for the IEEE 1284-I (Level-1 Type) and IEEE 1284-II (Level-2 Type) Electrical Specifications

参数：

SN74ACT1284
No. of Bits	7
A Side	TTL
B Side	IEEE1284
Bus Drive (ma)	-14/14
Static Current	1.5
Technology Family	ACT
Voltage Nodes (V)	5

型号/规格

SN74ACT1284DW,SN74ACT1284DWR

品牌/商标

TI

供应ACT1284,SN74ACT1284DW,SOIC-20三态输出的7位总线接口IC