參數(shù)資料
型號: 74LVC2244A
廠商: NXP Semiconductors N.V.
英文描述: Octal buffer/line driver;with 30Ω series termination resistors; with 5-volt tolerant inputs/outputs (3-State)(帶30Ω系列終端電阻器,5V輸入/輸出容限的八緩沖器/線驅(qū)動器(三態(tài)))
中文描述: 八路緩沖器/線路驅(qū)動器,與30Ω串聯(lián)終端電阻,與5伏容限輸入/輸出(3國)(帶30Ω系列終端電阻器,5V的輸入/輸出容限的八緩沖器/線驅(qū)動器(三態(tài)) )
文件頁數(shù): 8/16頁
文件大小: 84K
代理商: 74LVC2244A
1999 Sep 30
8
Philips Semiconductors
Product specification
Octal buffer/line driver with 30
series termination
resistors; 5 V input/output tolerant; 3-state
74LVC2244A
Fig.5 The 3-state enable and disable times.
handbook, full pagewidth
MNA362
tPLZ
tPHZ
outputs
disabled
outputs
enabled
VY
VX
outputs
enabled
output
LOW-to-OFF
OFF-to-LOW
output
HIGH-to-OFF
OFF-to-HIGH
nOE input
VI
VOL
VOH
VCC
VM
GND
GND
tPZL
tPZH
VM
VM
Fig.6 Load circuitry for switching times.
Definitions for test circuit:
R
L
= Load resistor
C
= Load capacitance including jig and probe capacitance
(see Chapter “AC characteristics”).
R
= Termination resistance should be equal to the output impedance Z
o
of the pulse generator.
TEST
S1
t
PLH
/t
PHL
t
PLZ
/t
PZL
t
PHZ
/t
PZH
open
2
×
V
CC
GND
V
CC
V
I
<2.7 V
2.7 to 3.6 V
V
CC
2.7 V
handbook, full pagewidth
open
GND
50 pF
2
×
VCC
VCC
VI
VO
MNA368
D.U.T.
CL
RT
RL
500
RL
500
PULSE
GENERATOR
S1
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