The SN74LVTH32245 is a 32-bit noninverting 3-state transceiver designed for low-voltage (3.3-V) VCC operation, but with the capability to provide a TTL interface to a 5-V system environment.
This device can be used as four 8-bit transceivers, two 16-bit transceivers, or one 32-bit transceiver. The device 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 (DIR) input. The output-enable (OE) input can be used to disable the devices so that the buses are effectively isolated.
When VCC is between 0 and 1.5 V, the device is in the high-impedance state during power up or power down. However, to ensure the high-impedance state above 1.5 V, OE 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.
This device is fully specified for hot-insertion applications using Ioff and power-up 3-state. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down, which prevents driver conflict.
Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended
| SN74LVTH32245 | |
| Voltage Nodes(V) | 3.3, 2.7 |
| Vcc range(V) | 2.7 to 3.6 |
| Input Level | TTL/CMOS |
| Output Level | LVTTL |
| Bus Drive(ma) | -32/64 |
| No. of Outputs | 32 |
| No. of Bits | 32 |
| Logic | True |
| Static Current | 10 |
| tpd max(ns) | 3.7 |
| Rating | Catalog |
| Technology Family | LVT |
| 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 |
| SN74LVTH32245GKER | NRND | -40 to 85 | 8.05 | 1ku | LFBGA (GKE) | 96 | 1000 | LARGE T&R | |
| SN74LVTH32245ZKER | ACTIVE | -40 to 85 | 3.85 | 1ku | LFBGA (ZKE) | 96 | 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 |
| SN74LVTH32245GKER | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74LVTH32245GKER | SN74LVTH32245GKER |
| SN74LVTH32245ZKER | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74LVTH32245ZKER | SN74LVTH32245ZKER |
