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+TM 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

1. SN74CBTK32245 数据资料 dataSheet 下载.PDF
2. TI 德州仪器信号开关产品选型与价格 . xls
3. Logic Guide 2009 (PDF 4263 KB)
4. 防止模拟开关的额外功耗 (PDF 392 KB) (PDF 1305 KB)
5. Understanding and Interpreting Standard-Logic Data Sheets (PDF 857 KB)
6. TI IBIS File Creation, Validation, and Distribution Processes (PDF 380 KB)
7. Implications of Slow or Floating CMOS Inputs (PDF 101 KB)
8. CMOS Power Consumption and CPD Calculation (PDF 89 KB)
9. Designing With Logic (PDF 186 KB)
10. Live Insertion (PDF 150 KB)
11. Input and Output Characteristics of Digital Integrated Circuits (PDF 1708 KB)
12. Using High Speed CMOS and Advanced CMOS in Systems With Multiple Vcc (PDF 43 KB)
13. HiRel Unitrode Power Management Brochure (PDF 206 KB)
14. LOGIC Pocket Data Book (PDF 6001 KB)
15. HiRel Unitrode Power Management Brochure (PDF 206 KB)
16. Logic Cross-Reference (PDF 2938 KB)