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參數(shù)資料
| 型號： | SN54ALVTH162245 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 2.5-V/3.3-V 16-Bit Bus Transceivers With 3-State Outputs( 2.5V/3.3V 16位總線收發(fā)器(三態(tài)輸出)) |
| 中文描述： | 2.5-V/3.3-V 16位總線收發(fā)器三態(tài)輸出（2.5V/3.3V的16位總線收發(fā)器（三態(tài)輸出）） |
| 文件頁數(shù)： | 1/9頁 |
| 文件大?。?/td> | 197K |
| 代理商： | SN54ALVTH162245 |
SN54ALVTHR162245, SN74ALVTHR162245
2.5-V/3.3-V 16-BIT BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCES075A – JUNE 1996 – REVISED JULY 1996
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Members of the Texas Instruments
Widebus
Family
Outputs Have Equivalent 30-
Series
Resistors, So No External Resistors Are
Required
High-Impedance State During Power Up
and Power Down
5-V I/O Compatible
High-Drive Capability (–12 mA/12 mA)
Typical V
OLP
(Output Ground Bounce)
< 0.8 V at V
CC
= 3.3 V, T
A
= 25
°
C
Auto 3-State Eliminates Bus Current
Loading When Voltage at the Output
Exceeds V
CC
Bus-Hold Data Inputs Eliminate the Need
for External Pullup/Pulldown Resistors
Power Off Disables Inputs/Outputs,
Permitting Live Insertion
Package Options Include Plastic 300-mil
Shrink Small-Outline (DL), Thin Shrink
Small-Outline (DGG), Thin Very
Small-Outline (DGV) Packages, and 380-mil
Fine-Pitch Ceramic Flat (WD) Package
description
The ’ALVTHR162245 are 16-bit (dual-octal)
noninverting 3-state transceivers designed for
2.5-V or 3.3-V V
CC
operation, but with the
capability to provide a TTL interface to a 5-V
system environment.
These devices can be used as two 8-bit transceivers or one 16-bit transceiver. They allow data transmission
from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control
(DIR) input. The output-enable (OE) input can be used to disable the device so that the buses are effectively
isolated.
Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.
When V
CC
is between 0 and 1.2 V, the device is in the high-impedance state during power up or power down.
However, to ensure the high-impedance state above 1.2 V, OE should be tied to V
CC
through a pullup resistor;
the minimum value of the resistor is determined by the current-sinking capability of the driver.
All outputs are designed to sink up to 12 mA and include 30-
resistors to reduce overshoot and undershoot.
The SN74ALVTHR162245 is available in TI’s thin very small-outline package (DGV), which provides the same
I/O pin count and functionality of standard Widebus packages in less than half the printed circuit board area.
The SN54ALVTHR162245 is characterized for operation over the full military temperature range of –55
°
C to
125
°
C. The SN74ALVTHR162245 is characterized for operation from –40
°
C to 85
°
C.
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
Copyright
1996, Texas Instruments Incorporated
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.
Widebus is a trademark of Texas Instruments Incorporated.
SN54ALVTHR162245 . . . WD PACKAGE
SN74ALVTHR162245 . . . DGG, DGV, OR DL PACKAGE
(TOP VIEW)
1
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14
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16
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48
47
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45
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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
CC
1B5
1B6
GND
1B7
1B8
2B1
2B2
GND
2B3
2B4
V
CC
2B5
2B6
GND
2B7
2B8
2DIR
1OE
1A1
1A2
GND
1A3
1A4
V
CC
1A5
1A6
GND
1A7
1A8
2A1
2A2
GND
2A3
2A4
V
CC
2A5
2A6
GND
2A7
2A8
2OE
P
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