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SN74LVCH16T245 Datasheet Preview

SN74LVCH16T245 Datasheet

16-bit Dual-supply Bus Transceiver

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SN74LVCH16T245
SCES635B – JULY 2005 – REVISED APRIL 2015
SN74LVCH16T245 16-bit Dual-supply Bus Transceiver
With Configurable Level-Shifting/Voltage Translation and Tri-State Outputs
1 Features
1 Control Inputs VIH/VIL Levels are Referenced to
VCCA Voltage
• VCC Isolation Feature – If Either VCC Input is at
GND, All Outputs are in the High-Impedance State
• Overvoltage-Tolerant Inputs and Outputs Allow
Mixed-Voltage-Mode Data Communications
• Fully Configurable Dual-Rail Design Allows Each
Port to Operate Over the Full 1.65 V to 5.5 V
Power-Supply Range
• Bus Hold on Data Inputs Eliminates the Need for
External Pullup and Pulldown Resistors
• Ioff Supports Partial-Power-Down Mode Operation
• Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
• ESD Protection Exceeds JESD 22
2 Applications
• Personal Electronics
• Industrial
• Enterprise
• Telecom
3 Description
This 16-bit noninverting bus transceiver uses two
separate configurable power-supply rails. The A port
is designed to track VCCA. VCCA accepts any supply
voltage from 1.65 V to 5.5 V. The B port is designed
to track VCCB. VCCB accepts any supply voltage from
1.65 V to 5.5 V. This allows for universal low-voltage
bidirectional translation between any of the 1.8-V,
2.5-V, 3.3-V, and 5-V voltage nodes.
The SN74LVCH16T245 device control pins (1DIR,
2DIR, 1OE, and 2OE) are supplied by VCCA.
The SN74LVCH16T245 device is designed for
asynchronous communication between two data
buses. 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.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
SSOP (48)
15.88 mm × 7.49 mm
TSSOP (48)
SN74LVCH16T245
TVSOP (48)
12.50 mm × 6.10 mm
9.70 mm × 4.40 mm
BGA (56)
7.00 mm × 4.50 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Logic Diagram (Positive Logic)
1
1DIR
24
2DIR
48 1OE
25 2OE
1A1 47
36
2A1
2 1B1
13 2B1
To Seven Other Channels
1
To Seven Other Channels
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.




etcTI

SN74LVCH16T245 Datasheet Preview

SN74LVCH16T245 Datasheet

16-bit Dual-supply Bus Transceiver

No Preview Available !

SN74LVCH16T245
SCES635B – JULY 2005 – REVISED APRIL 2015
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Description (continued)......................................... 3
6 Pin Configuration and Functions ......................... 4
7 Specifications......................................................... 6
7.1 Absolute Maximum Ratings ..................................... 6
7.2 ESD Ratings.............................................................. 6
7.3 Recommended Operating Conditions ...................... 7
7.4 Thermal Information .................................................. 8
7.5 Electrical Characteristics........................................... 8
7.6 Switching Characteristics for VCCA = 1.8 V ±0.15 V . 9
7.7 Switching Characteristics for VCCA = 2.5 V ±0.2 V . 10
7.8 Switching Characteristics for VCCA = 3.3 V ±0.3 V . 10
7.9 Switching Characteristics for VCCA = 5 V ±0.5 V .... 11
7.10 Operating Characteristics...................................... 11
7.11 Typical Characteristics .......................................... 12
8 Parameter Measurement Information ................ 13
9 Detailed Description ............................................ 14
9.1 Overview ................................................................. 14
9.2 Functional Block Diagram ....................................... 14
9.3 Feature Description................................................. 14
9.4 Device Functional Modes........................................ 15
10 Application and Implementation........................ 16
10.1 Application Information.......................................... 16
10.2 Typical Application ............................................... 17
11 Power Supply Recommendations ..................... 19
12 Layout................................................................... 19
12.1 Layout Guidelines ................................................. 19
12.2 Layout Example .................................................... 20
13 Device and Documentation Support ................. 21
13.1 Documentation Support ........................................ 21
13.2 Trademarks ........................................................... 21
13.3 Electrostatic Discharge Caution ............................ 21
13.4 Glossary ................................................................ 21
14 Mechanical, Packaging, and Orderable
Information ........................................................... 21
4 Revision History
Changes from Revision A (August 2005) to Revision B
Page
• Added Pin Configuration and Functions section, ESD Ratings table, Feature Description section, Device Functional
Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device
and Documentation Support section, and Mechanical, Packaging, and Orderable Information section .............................. 1
2
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Part Number SN74LVCH16T245
Description 16-bit Dual-supply Bus Transceiver
Maker etcTI
Total Page 3 Pages
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