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參數(shù)資料
| 型號(hào)： | 74VHC245T |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Quadruple 2-Input Positive-AND Gates 14-SOIC -40 to 85 |
| 中文描述： | 八路總線收發(fā)器三態(tài) |
| 文件頁(yè)數(shù)： | 4/8頁(yè) |
| 文件大?。?/td> | 66K |
| 代理商： | 74VHC245T |
CAPACITIVE CHARACTERISTICS
Symbol
Parameter
Test Conditions
Value
Unit
T
A
= 25
o
C
Min.
Typ.
-40 to 85
o
C
Min.
Max.
10
Max.
10
C
IN
C
I/O
C
PD
Input Capacitance
Bus Input Capacitance
Power Dissipation
Capacitance (note 1)
1)C
PD
isdefined as thevalue oftheIC’sinternal equivalent capacitance whichiscalculated fromtheoperatingcurrent consumption without load.(Referto
TestCircuit).Average opertingcurrent canbeobtained bythefollowingequation. I
CC
(opr)=C
PD
V
CC
f
IN
+I
CC
/8(per circuit)
4
8
21
pF
pF
pF
TESTCIRCUIT
TEST
SWITCH
Open
V
CC
GND
t
PLH
, t
PHL
t
PZL
, t
PLZ
t
PZH
, t
PHZ
C
L
=15/50pForequvalent (includes jigand probecapacitance)
R
L
=R
1
=1K
orequivalent
R
T
=Z
OUT
ofpulsegenerator (typically50
)
DYNAMIC SWITCHING CHARACTERISTICS
Symbol
Parameter
Test Conditions
V
CC
(V)
Value
Unit
T
A
= 25
o
C
Min.
Typ.
-40 to 85
o
C
Min.
Max.
0.9
Max.
V
OLP
V
OLV
V
IHD
Dynamic Low Voltage
Quiet Output (note 1, 2)
5.0
C
L
= 50 pF
0.6
-0.6
V
-0.9
3.5
Dynamic High Voltage
Input (note 1, 3)
Dynamic Low Voltage
Input (note 1, 3)
1)Worstcasepackage.
2)Maxnumber ofoutputsdefined as(n).Datainputsaredriven0Vto5.0V,(n-1)outputs switching andone outputatGND.
3)Maxnumber ofdatainputs (n)switching.(n-1)switching0Vto5.0V. Inputsunder testswitching: 5.0Vtothreshold (V
ILD
),0Vtothreshold (V
IHD
),f=1MHz.
5.0
V
ILD
5.0
1.5
74VHC245
4/8
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 74VHC245M | Quadruple 2-Input Positive-AND Gates 14-SOIC -40 to 85 |
| 74VHC245 | Octal Bus Transceiver (3-State)(八總線收發(fā)器) |
| 74VHC257 | QUAD 2 CHANNEL MULTIPLEXER 3-STATE |
| 74VHC257M | Quadruple 2-Input Positive-AND Gates 14-SOIC -40 to 85 |
| 74VHC257T | Quadruple 2-Input Positive-AND Gates 14-SOIC -40 to 85 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74VHC245TTR | 功能描述:總線收發(fā)器 Octal Bus Tranceiver RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時(shí)間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel |
| 74VHC257 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:QUAD 2 CHANNEL MULTIPLEXER 3-STATE |
| 74VHC257 WAF | 制造商:Texas Instruments 功能描述: |
| 74VHC257M | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:QUAD 2 CHANNEL MULTIPLEXER 3-STATE |
| 74VHC257MTC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:2-Input Digital Multiplexer |
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