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參數(shù)資料
| 型號(hào)： | SN74LVC544A |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Octal Registered Transceivers With 3-State Outputs(八記錄收發(fā)器(三態(tài)輸出)) |
| 中文描述： | 八路注冊(cè)收發(fā)器與三態(tài)輸出（八記錄收發(fā)器（三態(tài)輸出）） |
| 文件頁(yè)數(shù)： | 1/5頁(yè) |
| 文件大?。?/td> | 99K |
| 代理商： | SN74LVC544A |
SN74LVC544A
OCTAL REGISTERED TRANSCEIVER
WITH 3-STATE OUTPUTS
SCAS346C – MARCH 1994 – REVISED JANUARY 1997
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
EPIC
(Enhanced-Performance Implanted
CMOS) Submicron Process
Typical V
OLP
(Output Ground Bounce)
< 0.8 V at V
CC
= 3.3 V, T
A
= 25
°
C
Typical V
OHV
(Output V
OH
Undershoot)
> 2 V at V
CC
= 3.3 V, T
A
= 25
°
C
Supports Mixed-Mode Signal Operation on
All Ports (5-V Input/Output Voltage With
3.3-V V
CC
)
Package Options Include Plastic
Small-Outline (DW), Shrink Small-Outline
(DB), and Thin Shrink Small-Outline (PW)
Packages
description
This octal registered transceiver is designed for 2.7-V to 3.6-V V
CC
operation.
The SN74LVC544A contains two sets of D-type latches for temporary storage of data flowing in either direction.
Separate latch-enable (LEAB or LEBA) and output-enable (OEAB or OEBA) inputs are provided for each
register to permit independent control in either direction of data flow.
The A-to-B enable (CEAB) input must be low to enter data from A or to output data from B. If CEAB is low and
LEAB is low, the A-to-B latches are transparent; a subsequent low-to-high transition of LEAB places the A
latches in the storage mode. With CEAB and OEAB both low, the 3-state B outputs are active and reflect the
inverted data present at the output of the A latches. Data flow from B to A is similar to A to B, but requires using
the CEBA, LEBA, and OEBA.
To ensure the high-impedance state during power up or power down, 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.
Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of these devices as translators
in a mixed 3.3-V/5-V system environment.
The SN74LVC544A is characterized for operation from –40
°
C to 85
°
C.
FUNCTION TABLE
INPUTS
OUTPUT
B
CEAB
LEAB
OEAB
A
H
X
X
X
Z
L
X
H
X
Z
L
H
L
X
B0
H
L
L
L
L
L
L
L
H
L
A-to-B data flow is shown; B-to-A flow control is the
same except that it uses CEBA, LEBA, and OEBA.
Output level before the indicated steady-state input
conditions were established
Copyright
1997, Texas Instruments Incorporated
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.
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.
DB, DW, OR PW PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
LEBA
OEBA
A1
A2
A3
A4
A5
A6
A7
A8
CEAB
GND
V
CC
CEBA
B1
B2
B3
B4
B5
B6
B7
B8
LEAB
OEAB
P
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| SN74LVC573ADBR | 功能描述:閉鎖 Tri-St Octal D-Type RoHS:否 制造商:Micrel 電路數(shù)量:1 邏輯類型:CMOS 邏輯系列:TTL 極性:Non-Inverting 輸出線路數(shù)量:9 高電平輸出電流: 低電平輸出電流: 傳播延遲時(shí)間: 電源電壓-最大:12 V 電源電壓-最小:5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-16 封裝:Reel |
| SN74LVC573ADBRE4 | 功能描述:閉鎖 Tri-St Octal D-Type RoHS:否 制造商:Micrel 電路數(shù)量:1 邏輯類型:CMOS 邏輯系列:TTL 極性:Non-Inverting 輸出線路數(shù)量:9 高電平輸出電流: 低電平輸出電流: 傳播延遲時(shí)間: 電源電壓-最大:12 V 電源電壓-最小:5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-16 封裝:Reel |
| SN74LVC573ADBRG4 | 功能描述:閉鎖 Octal Transp DType Latch RoHS:否 制造商:Micrel 電路數(shù)量:1 邏輯類型:CMOS 邏輯系列:TTL 極性:Non-Inverting 輸出線路數(shù)量:9 高電平輸出電流: 低電平輸出電流: 傳播延遲時(shí)間: 電源電壓-最大:12 V 電源電壓-最小:5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-16 封裝:Reel |
| SN74LVC573ADGVR | 功能描述:閉鎖 Tri-St Octal D-Type RoHS:否 制造商:Micrel 電路數(shù)量:1 邏輯類型:CMOS 邏輯系列:TTL 極性:Non-Inverting 輸出線路數(shù)量:9 高電平輸出電流: 低電平輸出電流: 傳播延遲時(shí)間: 電源電壓-最大:12 V 電源電壓-最小:5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-16 封裝:Reel |
| SN74LVC573ADGVRE4 | 功能描述:閉鎖 Tri-St Octal D-Type RoHS:否 制造商:Micrel 電路數(shù)量:1 邏輯類型:CMOS 邏輯系列:TTL 極性:Non-Inverting 輸出線路數(shù)量:9 高電平輸出電流: 低電平輸出電流: 傳播延遲時(shí)間: 電源電壓-最大:12 V 電源電壓-最小:5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-16 封裝:Reel |
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