SN74VMEH22501A-EP_TI 增强型产品 8 位通用总线收发器和 2 个 1 位总线收发器

制造厂商：TI
产品类别：逻辑和电压转换
技术类目：缓冲器、驱动器和收发器 - 通用收发器
功能描述：增强型产品 8 位通用总线收发器和 2 个 1 位总线收发器
点击这里打开及下载SN74VMEH22501A-EP的技术文档资料
TI代理渠道，提供当日发货、严格的质量标准，满足您的目标价格

SN74VMEH22501A-EP的产品详情：

The SN74VMEH22501A-EP 8-bit universal bus transceiver has two integral 1-bit three-wire bus transceivers and is designed for 3.3-V V_CCoperation with 5-V tolerant inputs. The UBT transceiver allows transparent, latched, and flip-flop modes of data transfer, and the separate LVTTL input and outputs on the bus transceivers provide a feedback path for control and diagnostics monitoring. This device provides a high-speed interface between cards operating at LVTTL logic levels and VME64, VME64x, or VME320⁽²⁾ backplane topologies.

The SN74VMEH22501A-EP device is pin-for-pin compatible to the SN74VMEH22501 device (SCES357), but operates at a wider operating temperature range.

High-speed backplane operation is a direct result of the improved OEC circuitry and high drive that has been designed and tested into the VME64x backplane model. The B-port I/Os are optimized for driving large capacitive loads and include pseudo-ETL input thresholds (? V_CC ±50 mV) for increased noise immunity. These specifications support the 2eVME protocols in VME64x (ANSI/VITA 1.1) and 2eSST protocols in VITA 1.5.

With proper design of a 21-slot VME system, a designer can achieve 320-MB transfer rates on linear backplanes and, possibly, 1-GB transfer rates on the VME320 backplane.

All inputs and outputs are 5-V tolerant and are compatible with TTL and 5-V CMOS inputs.

Active bus-hold circuitry holds unused or undriven 3A-port inputs at a valid logic state. Bus-hold circuitry is not provided on 1A or 2A inputs, any B-port input, or any control input. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.

This device is fully specified for live-insertion applications using I_off, power-up 3-state, and BIAS V_CC. The I_off circuitry prevents damaging current to backflow through the device when it is powered off/on. The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down, which prevents driver conflict. The BIAS V_CC circuitry precharges and preconditions the B-port input/output connections, preventing disturbance of active data on the backplane during card insertion or removal, and permits true live-insertion capability.

When V_CC 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, output-enable (OE and OEBY) inputs should be tied to V_CC through a pullup resistor and output-enable (OEAB) inputs should be tied to GND through a pulldown resistor; the minimum value of the resistor is determined by the drive capability of the device connected to this input.

SN74VMEH22501A-EP的优势和特性：

Controlled Baseline
- One Assembly/Test Site, One Fabrication Site
Enhanced Diminishing Manufacturing Sources (DMS) Support
Enhanced Product-Change Notification
Qualification Pedigree(1)
Member of the Texas Instruments Widebus Family
UBT Transceiver Combines D-Type Latches and D-Type Flip-Flops for Operation in Transparent, Latched, or Clocked Modes
OEC Circuitry Improves Signal Integrity and Reduces Electromagnetic Interference (EMI)
Compliant With VME64, 2eVME, and 2eSST Protocols Validated at TA = -40°C to 85°C
Bus Transceiver Split LVTTL Port Provides a Feedback Path for Control and Diagnostics Monitoring
I/O Interfaces are 5-V Tolerant
B-Port Outputs (-48 mA/64 mA)
Y and A-Port Outputs (-12 mA/12 mA)
Ioff, Power-Up 3-State, and BIAS VCC Support Live Insertion
Bus Hold on 3A-Port Data Inputs
26-? Equivalent Series Resistor on 3A Ports and Y Outputs
Flow-Through Architecture Facilitates Printed Circuit Board Layout
Distributed VCC and GND Pins Minimize High-Speed Switching Noise
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)

SN74VMEH22501A-EP的参数（英文）：

IOL (Max) (mA)
12
IOH (Max) (mA)
-24
Technology Family
VME
Rating
HiRel Enhanced Product
Operating temperature range (C)
-40 to 85, -55 to 125

SN74VMEH22501A-EP具体的完整产品型号参数及价格（美元）：

SN74VMEH22501A-EP的完整型号有：CVMEH22501AIDGGREP、CVMEH22501AIDGVREP、CVMEH22501AMDGGREP、V62/05606-01XE、V62/05606-01YE、V62/05606-02XE，以下是这些产品的关键参数及官网采购报价：

CVMEH22501AIDGGREP，工作温度：-40 to 85，封装：TSSOP (DGG)-48，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网CVMEH22501AIDGGREP的批量USD价格：3.696（1000+）

CVMEH22501AIDGVREP，工作温度：-40 to 85，封装：TVSOP (DGV)-48，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网CVMEH22501AIDGVREP的批量USD价格：3.696（1000+）

CVMEH22501AMDGGREP，工作温度：-55 to 125，封装：TSSOP (DGG)-48，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网CVMEH22501AMDGGREP的批量USD价格：3.696（1000+）

V62/05606-01XE，工作温度：-40 to 85，封装：TSSOP (DGG)-48，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网V62/05606-01XE的批量USD价格：3.696（1000+）

V62/05606-01YE，工作温度：-40 to 85，封装：TVSOP (DGV)-48，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网V62/05606-01YE的批量USD价格：3.696（1000+）

V62/05606-02XE，工作温度：-55 to 125，封装：TSSOP (DGG)-48，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网V62/05606-02XE的批量USD价格：3.696（1000+）

SN74VMEH22501A-EP的评估套件：

SN74VMEH22501A-EP的电路图解：

SN74VMEH22501A-EP的评估套件：