参数资料
型号: SN54AHCT573FK
厂商: TEXAS INSTRUMENTS INC
元件分类: 总线收发器
英文描述: AHCT/VHCT SERIES, 8-BIT DRIVER, TRUE OUTPUT, CQCC20
封装: CERAMIC, LCC-20
文件页数: 1/9页
文件大小: 133K
代理商: SN54AHCT573FK
SN54AHCT573, SN74AHCT573
OCTAL TRANSPARENT D-TYPE LATCHES
WITH 3-STATE OUTPUTS
SCLS243L – OCTOBER 1995 – REVISED JANUARY 2000
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D EPIC (Enhanced-Performance Implanted
CMOS) Process
D Inputs Are TTL-Voltage Compatible
D Latch-Up Performance Exceeds 250 mA Per
JESD 17
D Package Options Include Plastic
Small-Outline (DW), Shrink Small-Outline
(DB), Thin Very Small-Outline (DGV), Thin
Shrink Small-Outline (PW), and Ceramic
Flat (W) Packages, Ceramic Chip Carriers
(FK), and Standard Plastic (N) and Ceramic
(J) DIPs
description
The ’AHCT573 devices are octal transparent
D-type latches. When the latch-enable (LE) input
is high, the Q outputs follow the data (D) inputs.
When LE is low, the Q outputs are latched at the
logic levels of the D inputs.
A buffered output-enable (OE) input can be used
to place the eight outputs in either a normal logic
state (high or low) or the high-impedance state. In
the high-impedance state, the outputs neither
load nor drive the bus lines significantly. The
high-impedance state
and
increased
drive
provide the capability to drive bus lines without
interface or pullup components.
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.
OE does not affect the internal operations of the latches. Old data can be retained or new data can be entered
while the outputs are in the high-impedance state.
The SN54AHCT573 is characterized for operation over the full military temperature range of –55
°C to 125°C.
The SN74AHCT573 is characterized for operation from –40
°C to 85°C.
FUNCTION TABLE
(each latch)
INPUTS
OUTPUT
OE
LE
D
Q
L
H
L
HL
L
LX
Q0
H
X
Z
Copyright
2000, 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.
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.
EPIC is a trademark of Texas Instruments Incorporated.
SN54AHCT573 ...J OR W PACKAGE
SN74AHCT573 . . . DB, DGV, DW, N, OR PW PACKAGE
(TOP VIEW)
SN54AHCT573 . . . FK PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
OE
1D
2D
3D
4D
5D
6D
7D
8D
GND
VCC
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
LE
32
1 20 19
910 11 12 13
4
5
6
7
8
18
17
16
15
14
2Q
3Q
4Q
5Q
6Q
3D
4D
5D
6D
7D
2D
1D
OE
8Q
7Q
1Q
8D
GND
LE
V
CC
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
相关PDF资料
PDF描述
SN54AHCT573W AHCT/VHCT SERIES, 8-BIT DRIVER, TRUE OUTPUT, CDFP20
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相关代理商/技术参数
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SN54AHCT573J 制造商:TI 制造商全称:Texas Instruments 功能描述:OCTAL TRANSPARENT D-TYPE LATCHES WITH 3-STATE OUTPUTS
SN54AHCT573W 制造商:TI 制造商全称:Texas Instruments 功能描述:OCTAL TRANSPARENT D-TYPE LATCHES WITH 3-STATE OUTPUTS
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