This 32-bit edge-triggered D-type flip-flop is designed for 1.65-V to 3.6-V VCC operation.
The SN74LVCH32374A is particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers. It can be used as four 8-bit flip-flops, two 16-bit flip-flops, or one 32-bit flip-flop. On the positive transition of the clock (CLK) input, the Q outputs of the flip-flop take on the logic levels set up at the data (D) inputs.
A buffered output-enable (OE) input can be used to place the eight outputs in either a normal logic state (high or low logic levels) or the high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The high-impedance state and increased drive provide the capability to drive bus lines without interface or pullup components.
OE does not affect internal operations of the flip-flop. Old data can be retained or new data can be entered while the outputs are in the high-impedance state.
This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.
To ensure the high-impedance state during power up or power down, 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.
Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of these devices as translators in a mixed 3.3-V/5-V system environment.
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
| SN74LVCH32374A | |
| Voltage Nodes(V) | 3.3, 2.7, 2.5, 1.8 |
| Vcc range(V) | 1.65 to 3.6 |
| Input Level | TTL/CMOS |
| Output Level | LVTTL |
| Output Drive(mA) | -24/24 |
| No. of Outputs | 32 |
| No. of Bits | 32 |
| th(ns) | 1.1 |
| tpd max(ns) | 4.9 |
| tsu(ns) | 1.9 |
| Logic | True |
| Technology Family | LVC |
| Rating | Catalog |
| 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 |
| SN74LVCH32374AGKER | NRND | -40 to 85 | 12.10 | 1ku | LFBGA (GKE) | 96 | 1000 | LARGE T&R | |
| SN74LVCH32374AZKER | ACTIVE | -40 to 85 | 5.75 | 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 |
| SN74LVCH32374AGKER | TBD | SNPB | Level-2-235C-1 YEAR | SN74LVCH32374AGKER | SN74LVCH32374AGKER |
| SN74LVCH32374AZKER | Green (RoHS & no Sb/Br) | SNAGCU | Level-3-260C-168 HR | SN74LVCH32374AZKER | SN74LVCH32374AZKER |