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參數(shù)資料
| 型號(hào)： | 74VHCT257AM |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Octal D-Type Flip-Flops With Clear 20-TSSOP -40 to 85 |
| 中文描述： | 四2通道多路復(fù)用三態(tài) |
| 文件頁數(shù)： | 1/10頁 |
| 文件大小： | 70K |
| 代理商： | 74VHCT257AM |
74VHCT257A
QUAD 2 CHANNEL MULTIPLEXER (3-STATE)
PRELIMINARY DATA
March 2000
I
HIGHSPEED:t
PD
=5.8ns(TYP.)at V
CC
=5V
I
LOWPOWER DISSIPATION:
I
CC
= 4
μ
A (MAX.)at T
A
=25
o
C
I
COMPATIBLEWITH TTLOUTPUTS:
V
IH
= 2V (MIN), V
IL
=0.8V(MAX)
I
POWERDOWNPROTECTIONON INPUTS&
OUTPUTS
I
SYMMETRICALOUTPUTIMPEDANCE:
|I
OH
|= I
OL
=8 mA(MIN)
I
BALANCEDPROPAGATIONDELAYS:
t
PLH
t
PHL
I
OPERATINGVOLTAGERANGE:
V
CC
(OPR)= 4.5Vto 5.5V
I
PINAND FUNCTIONCOMPATIBLEWITH
74 SERIES257
I
IMPROVEDLATCH-UP IMMUNITY
I
LOWNOISE:V
OLP
=0.8V(Max.)
DESCRIPTION
The 74VHCT257A is an advanced high-speed
CMOS QUAD
2
CHANNEL
(3-STATE) fabricated with sub-micron silicon gate
and
double-layer
metal
technology.
It is composed of four independent 2 channel
multiplexers with common SELECT and ENABLE
INPUT.
MULTIPLEXER
wiring
C
2
MOS
The 74VHCT257A is a non inverting multiplexer.
When the ENABLE INPUT is held ”High”, all
outputs
become
high
SELECT INPUT is held ”Low”, ”A” data is
selected, when SELECT INPUT is ”High”, ”B”
datais chosen.
Power down protection is provided on all inputs
and output and 0 to 7V can be accepted on
inputs with no regard to the supply voltage. This
device can be used to interface5V to 3V.
All
inputs
and
outputs are
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
impedance
state.
If
equipped with
PIN CONNECTION AND IEC LOGIC SYMBOLS
SOP
TSSOP
ORDER CODES
TUBE
74VHCT257AM
PACKAGE
SOP
TSSOP
T & R
74VHCT257AMTR
74VHCT257ATTR
1/9
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 74VHCT257AMTR | QUAD 2 CHANNEL MULTIPLEXER 3-STATE |
| 74VHCT273 | OCTAL D-TYPE FLIP FLOP WITH CLEAR |
| 74VHCT273A | OCTAL D-TYPE FLIP FLOP WITH CLEAR |
| 74VHCT273AM | OCTAL D-TYPE FLIP FLOP WITH CLEAR |
| 74VHCT273AT | OCTAL D-TYPE FLIP FLOP WITH CLEAR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74VHCT257AMTR | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 Quad 2-Ch Multiplexr RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時(shí)間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| 74VHCT257ATTR | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 Quad 2-Ch Multiplexr RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時(shí)間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| 74VHCT273AMTR | 功能描述:觸發(fā)器 Octal "D" Flip-Flop RoHS:否 制造商:Texas Instruments 電路數(shù)量:2 邏輯系列:SN74 邏輯類型:D-Type Flip-Flop 極性:Inverting, Non-Inverting 輸入類型:CMOS 輸出類型: 傳播延遲時(shí)間:4.4 ns 高電平輸出電流:- 16 mA 低電平輸出電流:16 mA 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:X2SON-8 封裝:Reel |
| 74VHCT273ATTR | 功能描述:觸發(fā)器 Octal "D" Flip-Flop RoHS:否 制造商:Texas Instruments 電路數(shù)量:2 邏輯系列:SN74 邏輯類型:D-Type Flip-Flop 極性:Inverting, Non-Inverting 輸入類型:CMOS 輸出類型: 傳播延遲時(shí)間:4.4 ns 高電平輸出電流:- 16 mA 低電平輸出電流:16 mA 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:X2SON-8 封裝:Reel |
| 74VHCT27AMTR | 功能描述:邏輯門 Triple 3-Input NOR RoHS:否 制造商:Texas Instruments 產(chǎn)品:OR 邏輯系列:LVC 柵極數(shù)量:2 線路數(shù)量（輸入/輸出）:2 / 1 高電平輸出電流:- 16 mA 低電平輸出電流:16 mA 傳播延遲時(shí)間:3.8 ns 電源電壓-最大:5.5 V 電源電壓-最小:1.65 V 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DCU-8 封裝:Reel |
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