SN74LVTH162245 具有三态输出的 3.3V ABT 16 位总线收发器

The 'LVTH162245 devices are 16-bit (dual-octal) noninverting 3-state transceivers designed for low-voltage (3.3-V) VCC operation, but with the capability to provide a TTL interface to a 5-V system environment.

These devices can be used as two 8-bit transceivers or one 16-bit transceiver. The devices allow 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 device so that the buses are effectively isolated.

The logic levels of the direction-control (DIR) input and the output-enable (OE) input activate either the B-port outputs or the A-port outputs or place both output ports into the high-impedance mode. The device transmits data from the A bus to the B bus when the B-port outputs are activated, and from the B bus to the A bus when the A-port outputs are activated. The input circuitry on both A and B ports is always active and must have a logic HIGH or LOW level applied to prevent excess ICC and ICCZ.

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.

The A-port outputs, which are designed to source or sink up to 12 mA, include equivalent 22- series resistors to reduce overshoot and undershoot.

When VCC is between 0 and 1.5 V, the devices are 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.

These devices are 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 devices when they are 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

	SN74LVTH162245
Voltage Nodes(V)	3.3, 2.7
Vcc range(V)	2.7 to 3.6
Output Drive(mA)	-32/64
No. of Outputs	16
No. of Bits	16
Logic	True
tpd max(ns)	3.3
Rating	Catalog
Technology Family	LVT

SN74LVTH162245 特性

Members of the Texas Instruments Widebus™ Family
A-Port Outputs Have Equivalent 22- Series Resistors, So No External Resistors Are Required
Support Mixed-Mode Signal Operation (5-V Input and Output Voltages With 3.3-V VCC)
Support Unregulated Battery Operation Down to 2.7 V
Typical VOLP (Output Ground Bounce) <0.8 V at VCC = 3.3 V, TA = 25°C
Ioff and Power-Up 3-State Support Hot Insertion
Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors
Distributed VCC and GND Pins Minimize High-Speed Switching Noise
Flow-Through Architecture Optimizes PCB Layout
Latch-Up Performance Exceeds 500 mA Per JESD 17
ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)
- 1000-V Charged-Device Model (C101)

SN74LVTH162245 芯片订购指南

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
SN74LVTH162245DL	ACTIVE	-40 to 85	3.90 \| 1ku	SSOP (DL) \| 48	25 \| TUBE
SN74LVTH162245DLR	ACTIVE	-40 to 85	3.30 \| 1ku	SSOP (DL) \| 48	1000 \| LARGE T&R

SN74LVTH162245 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
SN74LVTH162245DL	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	SN74LVTH162245DL	SN74LVTH162245DL
SN74LVTH162245DLR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	SN74LVTH162245DLR	SN74LVTH162245DLR

SN74LVTH162245 应用技术支持与电子电路设计开发资源下载

SN74LVTH162245 数据资料 dataSheet 下载.PDF
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