1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 2448 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25
1DIR 1B1 1B2 GND 1B3 1B4 V CCB 1B5 1B6 GND 1B7 1B8 2B1 2B2 GND 2B3 2B4 V CCB 2B5 2B6 GND 2B7 2B8 2DIR
1OE
1A1
1A2
GND
1A3
1A4
V CCA
1A5
1A6
GND
1A7
1A8
2A1
2A2
GND
2A3秸秆制煤
距离保护2A4
V CCA
2A5
2A6
GND
2A7
2A8
2OE
SN74LVC16T245-EP
ZHCSAQ3A–JANUARY2013–REVISED FEBRUARY2013
16位双电源总线收发器
查询样品:SN74LVC16T245-EP
特性
DGG封装
•控制输入V IH和V IL电平以V CCA电压为基准(顶视图)
•V CC隔离特性-如果任何一个V CC输入接地(GND)，
•过压耐受输入和输出可实现混合电压模式数据通信
•完全可配置双电源轨设计可使每个端口在整个
1.65V-5.5V电源电压范围内运行
•I关闭支持部分断电模式工作
•锁断性能超过100mA（符合JESD78，II类规范
的要求）
•静电放电(ESD)保护性能超过JESD22规范要求
–2000V人体模型(A114-A)
–200V机器模型(A115-A)
支持国防、航空航天、和医疗应用
•受控基线
•一个组装和测试场所
•一个制造场所
•军用（-55°C至125°C）温度范围内可用(1)
•延长的产品生命周期
•延长的产品变更通知
•产品可追溯性
(1)可定制工作温度范围
说明
这个16位非反相总线收发器使用两个独立的可配置电源轨。A端口被设计用于跟踪V CCA。V CCA可接受从1.65V 到5.5V范围内的任意电源电压。B端口被设计用于跟踪V CCB。V CCB可接受从1.65至5.5V间的任一电源电压值。这可实现1.8V，2.5V，3.3V和5V电压节点间的通用低压双向转换。
说明（继续）
SN74LVC16T245针对两条数据总线间的异步通信而设计。方向控制(DIR)输入和输出使能(OE)输入的逻辑电平激活B端口输出或者A端口输出，或者将两个输出端口都置于高阻抗模式。当B端口输出被激活时，此器件将数据从A总线发送到B总线，而当A端口输出被激活时，此器件将数据从B总线发送到A总线。A端口和B端口上的输入电路一直处于激活状态并且必须施加一个逻辑高或低电平以防止过多的I CC和I CCZ。
SN74LVC16T245的设计方式决定了控制引脚（1DIR，2DIR，1OE和2OE）由V CCA供电。
该器件完全符合使用I关闭的部分断电应用的规范要求。I关闭电路禁用输出，从而可防止其断电时破坏性电流从该器件回流。
Please be aware that an important notice concerning availability,standard warranty,and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
To Seven Other Channels 1DIR
1A1
1B1
1OE
To Seven Other Channels
2DIR
2A1
2B1
2OE
SN74LVC16T245-EP
ZHCSAQ3A –JANUARY 2013–REVISED FEBRUARY 2013
V CC 隔离特性可确保V CC 中的任何一个是否接地，然后两个端口都处于高阻抗状态。
为了确保加电或断电期间的高阻抗状态，OE 应通过一个上拉电阻器被连接至V CC ；该电阻器的最小值由驱动器的电流吸收能力来决定。
Table 1.ORDERING INFORMATION (1)
ORDERABLE PART
T A
PACKAGE
TOP-SIDE MARKING
VID NUMBER NUMBER Reel of 2000CLVC16T245MDGGREP V62/12667-01XE –55°C to 125°C TSSOP-DGG
LVC16T245M
Tube of 40
CLVC16T245MDGGEP
V62/12667-01XE-T
(1)
For the most current package and ordering information,see the Package Option Addendum at the end of this document,or see the TI website at .
FUNCTION TABLE (1)(EACH 8-BIT SECTION)
CONTROL INPUTS OUTPUT CIRCUITS OPERATION OE DIR A PORT B PORT L L Enabled Hi-Z B data to A bus L H Hi-Z Enabled A data to B bus
H X
Hi-Z
Hi-Z
Isolation
(1)
Input circuits of the data I/Os always are active.
LOGIC DIAGRAM (POSITIVE LOGIC)
SN74LVC16T245-EP
ZHCSAQ3A–JANUARY2013–REVISED FEBRUARY2013
Absolute Maximum Ratings(1)
over operating free-air temperature range(unless otherwise noted)
MIN MAX UNIT
V CCA
Supply voltage range–0.5 6.5V
V CCB
电容式料位计I/O ports(A port)–0.5 6.5
V I Input voltage range(2)I/O ports(B port)–0.5 6.5V
Control inputs–0.5 6.5
A port–0.5 6.5
Voltage range applied to any output
V O V in the high-impedance or power-off state(2)B port–0.5 6.5
A port–0.5V CCA+0.5
V O Voltage range applied to any output in the high or low state(2)(3)V
B port–0.5V CCB+0.5
I IK Input clamp current V I<0–50mA
I OK Output clamp current V O<0–50mA
I O Continuous output current±50mA
Continuous current through each V CCA,V CCB,and GND±100mA
T J Maximum junction temperature150°C
T stg Storage temperature range–65150°C (1)Stresses beyond those listed under"absolute maximum ratings"may cause permanent damage to the device.These are stress ratings
only,and functional operation of the device at these or any other conditions beyond those indicated under"recommended operating conditions"is not implied.Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2)The input and output negative-voltage ratings may be exceeded if the input and output current ratings are observed.
(3)The output positive-voltage rating may be exceeded up to6.5V maximum if the output current rating is observed.
THERMAL INFORMATION
SN74LVC16T245
THERMAL METRIC(1)DGG UNITS
48PINS
θJA Junction-to-ambient thermal resistance(2)59.9
θJCtop Junction-to-case(top)thermal resistance(3)13.9
θJB Junction-to-board thermal resistance(4)27.1
°C/W
ψJT Junction-to-top characterization parameter(5)0.5
ψJB Junction-to-board characterization parameter(6)26.8
θJCbot Junction-to-case(bottom)thermal resistance(7)N/A
不干胶贴标(1)有关传统和新的热度量的更多信息，请参阅IC封装热度量应用报告，SPRA953。
(2)在JESD51-2a描述的环境中，按照JESD51-7的指定，在一个JEDEC标准高K电路板上进行仿真，从而获得自然对流条件下的结至环 境热阻。
(3)通过在封装顶部模拟一个冷板测试来获得结至芯片外壳（顶部）的热阻。不存在特定的JEDEC标准测试，但可在ANSI SEMI标准G30-
88中能到内容接近的说明。
(4)按照JESD51-8中的说明，通过在配有用于控制PCB温度的环形冷板夹具的环境中进行仿真，以获得结板热阻。
(5)结至顶部特征参数，ψJT，估算真实系统中器件的结温，并使用JESD51-2a（第6章和第7章）中描述的程序从仿真数据中提取出该参
数以便获得θJA。
(6)结至电路板特征参数，ψJB，估算真实系统中器件的结温，并使用JESD51-2a（第6章和第7章）中描述的程序从仿真数据中提取出该
参数以便获得θJA。
(7)通过在外露（电源）焊盘上进行冷板测试仿真来获得结至芯片外壳（底部）热阻。不存在特定的JEDEC标准测试，但可在ANSI SEMI
标准G30-88中能到内容接近的说明。
SN74LVC16T245-EP
ZHCSAQ3A–JANUARY2013–REVISED
Recommended Operating Conditions(1)(2)(3)(4)
V CCI V CCO MIN MAX UNIT V CCA 1.65 5.5 Supply voltage V
V CCB 1.65 5.5
1.65V to1.95V V CCI×0.65
2.3V to2.7V 1.7
High-level
V IH Data inputs(5)V input voltage3V to3.6V2
4.5V to
5.5V V CCI×0.7
连续供墨打印机1.65V to1.95V V CCI×0.35
2.3V to2.7V0.7
Low-level
V IL Data inputs(5)V input voltage3V to3.6V0.8
4.5V to
5.5V V CCI×0.3
1.65V to1.95V V CCA×0.65
2.3V to2.7V 1.7
High-level Control inputs
V IH V input voltage(referenced to V CCA)(6)3V to3.6V2
4.5V to
5.5V V CCA×0.7
1.65V to1.95V V CCA×0.35
2.3V to2.7V0.7
Low-level Control inputs
V IL V input voltage(referenced to V CCA)(6)3V to3.6V0.8
4.5V to
5.5V V CCA×0.3
V I Input voltage Control inputs0 5.5V
Active state0V CCO
V I/O Input/output voltage V
3-State0 5.5
1.65V to1.95V–4
2.3V to2.7V–8
I OH High-level output current mA
无线病房呼叫系统
3V to3.6V–24
4.5V to
5.5V–32
1.65V to1.95V4
2.3V to2.7V8
I OL Low-level output current mA
3V to3.6V24
4.5V to
5.5V32
1.65V to1.95V20
2.3V to2.7V20
Input transition
Δt/Δv Data inputs ns/V rise or fall rate3V to3.6V10
4.5V to
5.5V5
T A Operating free-air temperature–55125°C
(1)V CCI is the V CC associated with the input port.
(2)V CCO is the V CC associated with the output port.
(3)All unused or driven(floating)data inputs(I/Os)of the device must be held at logic HIGH or LOW(preferably V CCI or GND)to ensure
proper device operation and minimize power.Refer to the TI application report,Implications of Slow or Floating CMOS Inputs,literature number SCBA004.
(4)All unused data inputs of the device must be held at V CCA or GND to ensure proper device oper
ation.
(5)For V CCI values not specified in the data sheet,V IH min=V CCI×0.7V,V IL max=V CCI×0.3V.
(6)For V CCA values not specified in the data sheet,V IH min=V CCA×0.7V,V IL max=V CCA×0.3V.
SN74LVC16T245-EP
ZHCSAQ3A–JANUARY2013–REVISED FEBRUARY2013
Electrical Characteristics(1)(2)
T A=−55°C to125°C,over recommended input voltage range(unless otherwise noted)
PARAMETER TEST CONDITIONS V CCA V CCB MIN TYP MAX UNIT
I OH=–100μA,V I=V IH 1.65V to4.5V 1.65V to4.5V V CCO–0.1
I OH=–4mA,V I=V IH 1.65V 1.65V 1.2
V OH I OH=–8mA,V I=V IH 2.3V 2.3V 1.9V
I OH=–24mA,V I=V IH3V3V 2.35
I OH=–32mA,V I=V IH 4.5V 4.5V 3.75
I OL=100μA,V I=V IL 1.65V to4.5V 1.65V to4.5V0.1
I OL=4mA,V I=V IL 1.65V 1.65V0.45
V OL I OL=8mA,V I=V IL 2.3V 2.3V0.3V
I OL=24mA,V I=V IL3V3V0.65
I OL=32mA,V I=V IL 4.5V 4.5V0.65
Control
I I V I=V CCA or GND 1.65V to5.5V 1.65V to5.5V±2μA
inputs
0V0to5.5V±10
A or B
I off V I or V O=0to5.5VμA
port0to5.5V0V±10
A or
B V O=V CCO or GND,
I OZ 1.65V to5.5V 1.65V to5.5V±10μA
port OE=V IH
1.65V to5.5V 1.65V to5.5V20
V I=V CCI or GND,
I CCA5V0V20μA
I O=0
0V5V–2.5
1.65V to5.5V 1.65V to5.5V20
V I=V CCI or GND,
I CCB5V0V–2.5μA
I O=0
0V5V20
V I=V CCI or GND,
I CCA+I CCB 1.65V to5.5V 1.65V to5.5V30μA
I O=0
One A port at V CCA–0.6V,
A port50
DIR at V CCA,B port=open
ΔI CCA3V to5.5V3V to5.5VμA DIR at V CCA–0.6V,
DIR B port=open,50
A port at V CCA or GND
One B port at V CCB–0.6V,
ΔI CCB B port3V to5.5V3V to5.5V50μA DIR at GND,A port=open
Control
C i V I=V CCA or GN
D 3.3V 3.3V4pF
inputs
A or B
C io V O=V CCA/B or GN
D 3.3V 3.3V8.5pF
port
(1)V CCO is the V CC associated with the output port.
(2)V CCI is the V CC associated with the input port.
