參數(shù)資料
型號： SN74LVC243
廠商： Texas Instruments, Inc.
英文描述： Quad Bus Transceivers With 3-State Outputs(四總線接收傳送器(三態(tài)輸出))
中文描述： 四總線收發(fā)器與三態(tài)輸出（四總線接收傳送器（三態(tài)輸出））
文件頁數(shù)： 1/5頁
文件大?。?/td> 92K
代理商： SN74LVC243
SN74LVC243
QUADRUPLE BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SCAS344 – MARCH 1994
Copyright
1994, Texas Instruments Incorporated
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
Package Options Include Plastic
Small-Outline (D), Shrink Small-Outline
(DB), and Thin Shrink Small-Outline (PW)
Packages
description
This quadruple bus transceiver is designed for 2.7-V to 3.6-V V
CC
operation.
The SN74LVC243 is designed for asynchronous communications between data buses. The control-function
implementation allows for maximum flexibility in timing. The device allows data transmission from the A bus to
the B bus or from the B bus to the A bus depending upon the logic levels at the output-enable (OEBA and OEAB)
inputs. The output-enable inputs can be used to disable the device so that the buses are effectively isolated.
The dual-enable configuration gives the quadruple bus transceivers the capability to store data by simultaneous
enabling of OEBA and OEAB. Each output reinforces its input in this transceiver configuration. Thus, when both
control inputs are enabled and all other data sources to the two sets of bus lines are at high impedance, both
sets of bus lines (eight in all) remain at their states. The 4-bit codes appearing on the two sets of buses will be
identical for the SN74LVC243.
The SN74LVC243 is characterized for operation from –40
°
C to 85
°
C.
FUNCTION TABLE
INPUTS
FUNCTION
OEAB
L
OEBA
L
A to B
H
H
B to A
H
L
Isolation
L
H
Latch A and B
(A = B)
D, DB, OR PW PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
14
13
12
11
10
9
8
OEAB
NC
A1
A2
A3
A4
GND
V
CC
OEBA
NC
B1
B2
B3
B4
EPIC is a trademark of 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.
P
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SN74LVC244ADBRG4 功能描述:緩沖器和線路驅(qū)動器 Octal Buffer/Driver W/3-State Output RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel
SN74LVC244ADGVR 功能描述:緩沖器和線路驅(qū)動器 Tri-State Octal RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel
SN74LVC244ADGVRE4 功能描述:緩沖器和線路驅(qū)動器 8-Bit FET 5-V Bus Switch RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel
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