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SN74LVT244DBR

更新时间： 2024-11-18 12:15:07
品牌 Logo 应用领域
德州仪器 - TI 驱动器输出元件
页数 文件大小 规格书
13页 381K
描述
3.3-V ABT OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS

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SN74LVT244DBR 数据手册

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SN54LVT244, SN74LVT244  
3.3-V ABT OCTAL BUFFERS/DRIVERS  
WITH 3-STATE OUTPUTS  
SCBS135B – AUGUST 1992 – REVISED MARCH 1994  
SN54LVT244 . . . J OR W PACKAGE  
SN74LVT244 . . . DB, DW, OR PW PACKAGE  
(TOP VIEW)  
• State-of-the-Art Advanced BiCMOS  
Technology (ABT) Design for 3.3-V  
Operation and Low Static Power  
Dissipation  
1OE  
1A1  
2Y4  
1A2  
2Y3  
1A3  
2Y2  
1A4  
2Y1  
GND  
V
CC  
1
2
3
4
5
6
7
8
9
10  
20  
19  
18  
17  
16  
15  
14  
• Support Mixed-Mode Signal Operation (5-V  
2OE  
1Y1  
2A4  
1Y2  
2A3  
1Y3  
Input and Output Voltages With 3.3-V V  
)
CC  
• Support Unregulated Battery Operation  
Down to 2.7 V  
• Typical V  
(Output Ground Bounce)  
OLP  
< 0.8 V at V  
= 3.3 V, T = 25°C  
CC  
A
13 2A2  
12 1Y4  
• ESD Protection Exceeds 2000 V Per  
MIL-STD-883C, Method 3015; Exceeds  
200 V Using Machine Model (C = 200 pF,  
R = 0)  
11  
2A1  
SN54LVT244 . . . FK PACKAGE  
(TOP VIEW)  
• Latch-Up Performance Exceeds 500 mA  
Per JEDEC Standard JESD-17  
• Bus-Hold Data Inputs Eliminate the Need  
for External Pullup Resistors  
• Supports Live Insertion  
3
2
1
20 19  
18  
1Y1  
2A4  
1Y2  
2A3  
1Y3  
1A2  
2Y3  
1A3  
2Y2  
1A4  
4
5
6
7
8
• Package Options Include Plastic  
Small-Outline (DW), Shrink Small-Outline  
(DB), and Thin Shrink Small-Outline (PW)  
Packages, Ceramic Chip Carriers (FK),  
Ceramic Flatpacks (W), and Ceramic  
DIPS (J)  
17  
16  
15  
14  
9 10 11 12 13  
description  
These octal buffers and line drivers are designed specifically for low-voltage (3.3-V) V operation, but with the  
CC  
capability to provide a TTL interface to a 5-V system environment.  
The ’LVT244 is organized as two 4-bit line drivers with separate output-enable (OE) inputs. When OE is low,  
the device passes data from the A inputs to the Y outputs. When OE is high, the outputs are in the  
high-impedance state.  
Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.  
To ensure the high-impedance state during power up or power down, OE should be tied to V through a pullup  
CC  
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.  
The SN74LVT244 is packaged in TI’s shrink small-outline package (DB), which provides the same I/O pin count  
and functionality of standard small-outline packages in less than half the printed-circuit-board area.  
The SN54LVT244 is characterized for operation over the full military temperature range of –55°C to 125°C. The  
SN74LVT244 is characterized for operation from –40°C to 85°C.  
FUNCTION TABLE  
(each buffer)  
INPUTS  
OUTPUT  
Y
OE  
A
H
L
L
L
H
L
H
X
Z
Copyright 1994, Texas Instruments Incorporated  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
LVT244–5  
2–1  
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...13

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与SN74LVT244DBR相关器件

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SN74LVT244DW TI

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 		3.3-V ABT OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS
SN74LVT244DWR TI

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 		3.3-V ABT OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS
SN74LVT244PW TI

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 		LVT SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, PDSO20
SN74LVT244PWLE TI

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 		3.3-V ABT OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS
SN74LVT244PWR TI

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 		暂无描述
SN74LVT245 TI

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 		3.3-V ABT OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
SN74LVT245ADW ROCHESTER

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 		暂无描述
SN74LVT245ADWR ROCHESTER

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 		LVT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20
SN74LVT245B TI

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 		3.3-V ABT OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
SN74LVT245B_10 TI

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 		3.3-V ABT OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS

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