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SN74LVC8T245PWG4 数据手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
逻辑控制器
封装:
TSSOP-24
描述:
可配置电压转换和3态输出的8位双电源总线收发器 8-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS
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SN74LVC8T245PWG4数据手册
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SN74LVC8T245
SCES584B –JUNE 2005–REVISED NOVEMBER 2014
SN74LVC8T245 8-Bit Dual-Supply Bus Transceiver With
Configurable Voltage Translation and 3-State Outputs
1 Features 3 Description
This 8-bit noninverting bus transceiver uses two
1
• Control Inputs V
IH
/V
IL
Levels Are Referenced to
separate configurable power-supply rails. The
V
CCA
Voltage
SN74LVC8T245 is optimized to operate with V
CCA
• V
CC
Isolation Feature – If Either V
CC
Input Is at
and V
CCB
set at 1.65 V to 5.5 V. The A port is
GND, All Are in the High-Impedance State
designed to track V
CCA
. V
CCA
accepts any supply
voltage from 1.65 V to 5.5 V. The B port is designed
• Fully Configurable Dual-Rail Design Allows Each
to track V
CCB
. V
CCB
accepts any supply voltage from
Port to Operate Over the Full 1.65-V to 5.5-V
1.65 V to 5.5 V. This allows for universal low-voltage
Power-Supply Range
bidirectional translation between any of the 1.8-V,
• Latch-Up Performance Exceeds 100 mA Per
2.5-V, 3.3-V, and 5.5-V voltage nodes.
JESD 78, Class II
The SN74LVC8T245 is designed for asynchronous
• ESD Protection Exceeds JESD 22
communication between two data buses. The logic
– 4000-V Human-Body Model (A114-A)
levels of the direction-control (DIR) input and the
– 100-V Machine Model (A115-A)
output-enable (OE) input activate either the B-port
outputs or the A-port outputs or place both output
– 1000-V Charged-Device Model (C101)
ports into the high-impedance mode. The device
transmits data from the A bus to the B bus when the
2 Applications
B-port outputs are activated, and from the B bus to
• Personal Electronic
the A bus when the A-port outputs are activated. The
input circuitry on both A and B ports is always active
• Industrial
and must have a logic HIGH or LOW level applied to
• Enterprise
prevent excess I
CC
and I
CCZ
.
• Telecom
The SN74LVC8T245 is designed so that the control
pins (DIR and OE) are supplied by V
CCA
.
Device Information
(1)
PART NUMBER PACKAGE BODY SIZE (NOM)
SSOP (24) 8.20 mm x 5.30 mm
SSOP (24) 8.65 mm x 3.90 mm
SN74LVC8T245 TSSOP (24) 7.80 mm x 4.40 mm
TVSOP (24) 5.00 mm x 4.40 mm
VQFN (24) 5.50 mm x 3.50 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
4 Logic Diagram (Positive Logic)
1
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.
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