The 'ABT16640 are inverting 16-bit transceivers designed for asynchronous communication between data buses.
These devices can be used as two 8-bit transceivers or one 16-bit   transceiver. It allows data transmission from the A bus to the B bus or from the   B bus to the A bus, depending on the logic level at the direction-control (1DIR   and 2DIR) inputs. The output-enable (1
 and 2
) inputs can be   used to disable the device so that the buses are effectively isolated.
To ensure the high-impedance state during power up or power down, 
 should be tied   to VCC through a pullup resistor; the minimum value of the resistor   is determined by the current-sinking capability of the driver.
The SN54ABT16640 is characterized for operation over the full military temperature range of -55°C to 125°C
| CY74FCT245AT | |
| Voltage Nodes(V) | 5 | 
| Vcc range(V) | 4.5 to 5.5 | 
| Input Level | TTL | 
| Output Level | TTL | 
| Output Drive(mA) | -32/64 | 
| No. of Outputs | 16 | 
| Logic | True | 
| Static Current | 17 | 
| tpd max(ns) | 4.3 | 
| Rating | Catalog | 
| Technology Family | ABT | 
| 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 | 
| SN74ABT16640DL | ACTIVE | -40 to 85 | 0.95 | 1ku | SSOP (DL) | 48 | 25 | TUBE | |
| SN74ABT16640DLR | ACTIVE | -40 to 85 | 0.80 | 1ku | SSOP (DL) | 48 | 1000 | LARGE T&R | 
| 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 | 
| SN74ABT16640DL | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74ABT16640DL | SN74ABT16640DL | 
| SN74ABT16640DLR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74ABT16640DLR | SN74ABT16640DLR |