參數(shù)資料
型號： SNJ54LVT244W
廠商： TEXAS INSTRUMENTS INC
元件分類： 總線收發(fā)器
英文描述： LVT SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, CDFP20
封裝： CERAMIC, FP-20
文件頁數(shù)： 1/13頁
文件大?。?/td> 386K
代理商： SNJ54LVT244W
SN54LVT244, SN74LVT244
3.3-V ABT OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCBS135B – AUGUST 1992 – REVISED MARCH 1994
Copyright
1994, Texas Instruments Incorporated
2–1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
State-of-the-Art Advanced BiCMOS
Technology (ABT) Design for 3.3-V
Operation and Low Static Power
Dissipation
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 V
OLP (Output Ground Bounce)
< 0.8 V at VCC = 3.3 V, TA = 25°C
ESD Protection Exceeds 2000 V Per
MIL-STD-883C, Method 3015; Exceeds
200 V Using Machine Model (C = 200 pF,
R = 0)
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
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)
description
These octal buffers and line drivers are designed specifically for low-voltage (3.3-V) VCC operation, but with the
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 VCC through a pullup
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
OE
A
Y
L
H
L
LL
H
X
Z
LVT244–5
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
1OE
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
GND
VCC
2OE
1Y1
2A4
1Y2
2A3
1Y3
2A2
1Y4
2A1
SN54LVT244 ...J OR W PACKAGE
SN74LVT244 . . . DB, DW, OR PW PACKAGE
(TOP VIEW)
3
2
1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
1Y1
2A4
1Y2
2A3
1Y3
1A2
2Y3
1A3
2Y2
1A4
SN54LVT244 . . . FK PACKAGE
(TOP VIEW)
2Y4
1A1
1OE
1Y4
2A2
2OE
2Y1
GND
2A1
V
CC
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.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SNJ54LVT245FK 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述:
SNJ54LVT245J 制造商:Texas Instruments 功能描述:
SNJ54LVT573FK 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述:
SNJ54LVT574FK 制造商:Rochester Electronics LLC 功能描述:OCTAL BUS DRIVER, DSCC 5962-9583201Q2A - Bulk 制造商:Texas Instruments 功能描述:
SNJ54LVT574W 制造商:Texas Instruments 功能描述:
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