參數資料
型號： 74LVT244B
廠商： NXP Semiconductors N.V.
英文描述： Octal Buffers And Line Drivers With 3-State Outputs 20-SSOP -40 to 85
中文描述： 3.3八路緩沖器/線路驅動器三態(tài)
文件頁數： 5/10頁
文件大?。?/td> 91K
代理商： 74LVT244B
Philips Semiconductors
Product specification
74LVT244B
3.3V Octal buffer/line driver (3-State)
1998 Nov 12
5
DC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
Temp = -40
°
C to +85
°
C
MIN
TYP
1
–0.9
V
CC
-0.2
V
CC
-0.1
2.4
2.0
UNIT
MAX
–1.2
V
IK
Input clamp voltage
V
CC
= 2.7V; I
IK
= –18mA
V
CC
= 2.7 to 3.6V; I
OH
= –100
μ
A
V
CC
= 2.7V; I
OH
= –8mA
V
CC
= 3.0V; I
OH
= –32mA
V
CC
= 2.7V; I
OL
= 100
μ
A
V
CC
= 2.7V; I
OL
= 24mA
V
CC
= 3.0V; I
OL
= 16mA
V
CC
= 3.0V; I
OL
= 32mA
V
CC
= 3.0V; I
OL
= 64mA
V
CC
= 0 or 3.6V; V
I
= 5.5V
V
CC
= 3.6V; V
I
= V
CC
or GND
V
CC
= 3.6V; V
I
= V
CC
V
CC
= 3.6V; V
I
= 0
V
CC
= 0V; V
I
or V
O
= 0 to 4.5V
V
CC
= 3V; V
I
= 0.8V
V
CC
= 3V; V
I
= 2.0V
V
CC
= 0V to 3.6V; V
CC
= 3.6V
V
V
OH
High-level output voltage
2.5
2.2
0.1
0.3
0.25
0.3
0.4
0.1
±
0.1
0.1
–1
1
130
–140
V
0.2
0.5
0.4
0.5
0.55
10
±
1
1
-5
±
100
V
OL
Low-level output voltage
V
I
I
Input leakage current
In ut leakage current
Control pins
μ
A
Data Pins
4
I
OFF
Output off current
μ
A
75
–75
±
500
I
HOLD
Bus Hold current A inputs
6
μ
A
I
EX
Current into an output in the
High state when V
O
> V
CC
Power up/down 3-State
output current
3
3-State output high current
3-State output low current
V
O
= 5.5V; V
CC
= 3.0V
60
125
μ
A
I
PU/PD
V
CC
≤
1.2V; V
O
= 0.5V to V
CC
; V
I
= GND or V
CC
;
OE/OE = Don’t care
V
CC
= 3.6V; V
O
= 3V; V
I
= V
IL
or V
IH
V
CC
= 3.6V; V
O
= 0.5V; V
I
= V
IL
or V
IH
V
CC
= 3.6V; Outputs High, V
I
= GND or V
CC,
I
O =
0
V
CC
= 3.6V; Outputs Low, V
I
= GND or V
CC,
I
O =
0
V
CC
= 3.6V; Outputs Disabled; V
I
= GND or V
CC,
I
O
=
0
5
V
CC
= 3V to 3.6V; One input at V
CC
-0.6V,
Other inputs at V
CC
or GND
±
1
±
100
μ
A
I
OZH
I
OZL
I
CCH
I
CCL
I
CCZ
1
–1
0.13
2
0.13
5
–5
0.19
5
0.19
μ
A
μ
A
Quiescent supply current
mA
I
CC
Additional supply current per
input pin
2
0.1
0.2
mA
NOTES:
1. All typical values are at T
amb
= 25
°
C.
2. This is the increase in supply current for each input at the specified voltage level other than V
or GND
3. This parameter is valid for any V
between 0V and 1.2V with a transition time of up to 10msec. From V
CC
= 1.2V to V
CC
= 3.3V
±
0.3V a
transition time of 100
μ
sec is permitted. This parameter is valid for T
amb
= 25
°
C only.
4. Unused pins at V
CC
or GND.
5. I
CCZ
is measured with outputs pulled to V
CC
or GND.
6. This is the bus hold overdrive current required to force the input to the opposite logic state.
AC CHARACTERISTICS
GND = 0V; t
R
= t
F
= 2.5ns; C
L
= 50pF; R
L
= 500
; T
amb
= –40
°
C to +85
°
C.
LIMITS
SYMBOL
PARAMETER
WAVEFORM
V
CC
= 3.3V
±
0.3V
V
CC
= 2.7V
UNIT
MIN
TYP
1
MAX
MAX
t
PLH
t
PHL
Propagation delay
nAx to nYx
1
1.1
1.3
1.9
2.0
3.5
3.3
3.8
3.6
ns
t
PZH
t
PZL
Output enable time
to High and Low level
2
1.1
1.4
2.8
2.3
4.5
4.4
5.3
4.9
ns
t
PHZ
t
PLZ
Output disable time
from High and Low level
2
1.9
1.8
2.9
2.5
4.4
4.4
4.5
4.4
ns
相關PDF資料
PDF描述
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