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參數(shù)資料
| 型號(hào)： | SN74ABT244DBR |
| 廠(chǎng)商： | TEXAS INSTRUMENTS INC |
| 元件分類(lèi)： | 總線(xiàn)收發(fā)器 |
| 英文描述： | ABT SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, PDSO20 |
| 封裝： | PLASTIC, SSOP-20 |
| 文件頁(yè)數(shù)： | 1/7頁(yè) |
| 文件大?。?/td> | 104K |
| 代理商： | SN74ABT244DBR |
SN54ABT244, SN74ABT244
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCBS099E – JANUARY 1991 – REVISED JULY 1994
Copyright
1994, Texas Instruments Incorporated
2–1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
State-of-the-Art EPIC-ΙΙB BiCMOS Design
Significantly Reduces Power Dissipation
Latch-Up Performance Exceeds 500 mA
Per JEDEC Standard JESD-17
Typical V
OLP (Output Ground Bounce)
< 1 V at VCC = 5 V, TA = 25°C
High-Drive Outputs (–32-mA I
OH,
64-mA IOL)
Package Options Include Plastic
Small-Outline (DW), Shrink Small-Outline
(DB), and Thin Shrink Small-Outline (PW)
Packages, Ceramic Chip Carriers (FK), and
Plastic (N) and Ceramic (J) DIPs
description
These octal buffers and line drivers are designed
specifically to improve both the performance and
density of 3-state memory address drivers, clock
drivers,
and
bus-oriented
receivers
and
transmitters. Taken together with the
′ABT240 and
′ABT241, these devices provide the choice of
selected
combinations
of
inverting
and
noninverting outputs, symmetrical active-low
output-enable (OE) inputs, and complementary
OE and OE inputs.
The
′ABT244 is organized as two 4-bit buffers/line
drivers with separate 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.
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 SN74ABT244 is available 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 SN54ABT244 is characterized for operation over the full military temperature range of – 55
°C to 125°C. The
SN74ABT244 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
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
SN54ABT244 ...J PACKAGE
SN74ABT244 . . . DB, DW, N, 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
SN54ABT244 . . . FK PACKAGE
(TOP VIEW)
2Y4
1A1
1OE
1Y4
2A2
2OE
2Y1
GND
2A1
V
CC
EPIC-
ΙΙB is a trademark of 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.
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PDF描述 |
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| SN74ABT245ADBR | ABT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20 |
| SN74ABT245BMDBREP | ABT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20 |
| SN74ABT25244NT | ABT SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, PDIP24 |
| SN74ABT32318PNR | ABT SERIES, 18-BIT EXCHANGER, TRUE OUTPUT, PQFP80 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SN74ABT244DW | 制造商:Texas Instruments 功能描述: |
| SN74ABT244DWR | 制造商:TI 功能描述:74ABT244 |
| SN74ABT244N | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| SN74ABT245 | 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS |
| SN74ABT245B | 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:OCTAL BUS TRANSCEIVERS WITH 3 STATE OUTPUTS |
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