參數(shù)資料
型號: 74LVC2244
廠商: NXP Semiconductors N.V.
英文描述: Octal buffer/line driver with 30 ohm series termination resistors; 5 V input/output tolerant; 3-state
中文描述: 八路緩沖器/線系列30歐姆的終端電阻器; 5 V輸入/輸出寬容,三態(tài)
文件頁數(shù): 7/16頁
文件大?。?/td> 84K
代理商: 74LVC2244
1999 Sep 30
7
Philips Semiconductors
Product specification
Octal buffer/line driver with 30
series termination
resistors; 5 V input/output tolerant; 3-state
74LVC2244A
AC CHARACTERISTICS
Ground = 0 V; t
r
= t
f
2.5 ns.
Note
1.
Typical values at V
CC
= 3.3 V and T
amb
= 25
°
C.
AC WAVEFORMS
SYMBOL
PARAMETER
WAVEFORMS
V
CC
= 3.3
±
0.3 V
V
CC
= 2.7 V
UNIT
MIN.
TYP.
(1)
MAX.
MIN.
MAX.
t
PHL
/t
PLH
propagation delay
1A
n
to 1Y
n
; 2A
n
to 2Y
n
3-state output enable time
1OE to 1Y
n
; 2OE to 2Y
n
3-state output disable time
1OE to 1Y
n
; 2OE to 2Y
n
see Figs 4 and 6
1.5
4.0
6.5
1.5
7.5
ns
t
PZH
/t
PZL
see Figs 5 and 6
1.5
4.4
8.1
1.5
9.1
ns
t
PHZ
/t
PLZ
see Figs 5 and 6
1.5
3.8
5.4
1.5
6.4
ns
Fig.4 The input nA
n
to output nY
n
propagation delays.
handbook, halfpage
MNA361
1An, 2An
input
1Yn, 2Yn
output
tPHL
tPLH
GND
VI
VM
VM
VOH
VOL
V
M
= 1.5 V at V
CC
2.7 V;
V
M
= 0.5 V
CC
at V
CC
< 2.7 V;
V
OL
and V
OH
are typical output voltage drop that occur with the output load.
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74LVC2244APWDH Octal buffer/line driver with 30 ohm series termination resistors; 5 V input/output tolerant; 3-state
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