SN74CBTK32245 具有有源钳位下冲保护电路的 32 位 FET 总线开关
The SN74CBTK32245 device provides 32 bits of high-speed TTL-compatible bus switching. The low on-state resistance of the switch allows connections to be made with minimal propagation delay.
The A and B ports have an active-clamp undershoot-protection circuit. When there is an undershoot, the active-clamp circuit is enabled and current from VCC is supplied to clamp the output, preventing the pass transistor from turning on.
The device is organized as four 8-bit bus switches, two 16-bit bus switches, or one 32-bit bus switch. When output-enable (OE)\ input is low, the switch is on and port A is connected to port B. When OE\ is high, the switch is open and the high-impedance state exists between the two ports.
This device is fully specified for partial-power-down applications using Ioff
| SN74CBTK32245 | |
| Voltage Nodes(V) | 5 |
| Vcc range(V) | 4.0 to 5.5 |
| No. of Bits | 32 |
| Input Level | TTL |
| Output Level | TTL |
| ron(max)(ohms) | 20 |
| Static Current(Max) | 0.006 |
| tpd max(ns) | 0.25 |
| Rating | Catalog |
| Technology Family | CBT |
SN74CBTK32245 特性
- Member of Texas Instruments' Widebus+™ Family
- 5-
Switch Connection Between Two Ports
- TTL-Compatible Input Levels
- Ioff Supports Partial-Power-Down Mode Operation
- Active-Clamp Undershoot-Protection Circuit on the I/Os Clamps Undershoots up to –2 V
- Flow-Through Architecture Optimizes PCB Layout
- Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
- ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)
- 1000-V Charged-Device Model (C101)
SN74CBTK32245 芯片订购指南
| 器件 | 状态 | 温度 | 价格 | 封装 | 引脚 | 封装数量 | 封装载体 | 丝印标记 |
| SN74CBTK32245GKER | NRND | -40 to 85 | 10.70 | 1ku | LFBGA (GKE) | 96 | 1000 | LARGE T&R | |
| SN74CBTK32245ZKER | ACTIVE | -40 to 85 | 5.10 | 1ku | LFBGA (ZKE) | 96 | 1000 | LARGE T&R |
SN74CBTK32245 质量与无铅数据
| 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 |
| SN74CBTK32245GKER | TBD | SNPB | Level-2-235C-1 YEAR | SN74CBTK32245GKER | SN74CBTK32245GKER |
| SN74CBTK32245ZKER | Green (RoHS & no Sb/Br) | SNAGCU | Level-3-260C-168 HR | SN74CBTK32245ZKER | SN74CBTK32245ZKER |
SN74CBTK32245 应用技术支持与电子电路设计开发资源下载
- SN74CBTK32245 数据资料 dataSheet 下载.PDF
- TI 德州仪器信号开关产品选型与价格 . xls
- Logic Guide 2009 (PDF 4263 KB)
- 防止模拟开关的额外功耗 (PDF 392 KB) (PDF 1305 KB)
- Understanding and Interpreting Standard-Logic Data Sheets (PDF 857 KB)
- TI IBIS File Creation, Validation, and Distribution Processes (PDF 380 KB)
- Implications of Slow or Floating CMOS Inputs (PDF 101 KB)
- CMOS Power Consumption and CPD Calculation (PDF 89 KB)
- Designing With Logic (PDF 186 KB)
- Live Insertion (PDF 150 KB)
- Input and Output Characteristics of Digital Integrated Circuits (PDF 1708 KB)
- Using High Speed CMOS and Advanced CMOS in Systems With Multiple Vcc (PDF 43 KB)
- HiRel Unitrode Power Management Brochure (PDF 206 KB)
- LOGIC Pocket Data Book (PDF 6001 KB)
- HiRel Unitrode Power Management Brochure (PDF 206 KB)
- Logic Cross-Reference (PDF 2938 KB)
