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參數(shù)資料
| 型號(hào)： | 74LVT245 |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | Octal Buffers And Line Drivers With 3-State Outputs 20-TSSOP -40 to 85 |
| 中文描述： | 低壓八路雙向收發(fā)器具有三態(tài)輸入/輸出 |
| 文件頁數(shù)： | 4/10頁 |
| 文件大?。?/td> | 92K |
| 代理商： | 74LVT245 |
Philips Semiconductors
Product specification
74LVT245
3.3V Octal transceiver with direction pin (3-State)
1998 Feb 19
4
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
LIMITS
UNIT
MIN
2.7
0
2.0
MAX
3.6
5.5
V
CC
V
I
V
IH
V
IL
I
OH
DC supply voltage
Input voltage
High-level input voltage
Input voltage
High-level output current
Low-level output current
Low-level output current; current duty cycle
≤
50%; f
≥
1kHz
Input transition rise or fall rate; Outputs enabled
Operating free-air temperature range
V
V
V
V
0.8
–32
32
64
10
+85
mA
I
OL
mA
t/
v
T
amb
ns/V
°
C
–40
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
= 5.5V
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
1
±
0.1
1
0.1
–1
1
150
–150
V
0.2
0.5
0.4
0.5
0.55
10
±
1
20
1
-5
±
100
V
OL
Low-level output voltage
V
Control pins
Control ins
I
I
Input leakage current
μ
A
I/O Data pins
4
I
OFF
Output off current
μ
A
75
–75
±
500
I
HOLD
Bus Hold current A inputs
5
μ
A
I
EX
Current into an ouptut in the
High state when V
O
> V
CC
Power up/down 3-State
output current
3
V
O
= 5.5V; V
CC
= 3.0V
60
125
μ
A
I
PU/PD
V
≤
1.2V; V
= 0.5V to V
CC
; V
I
= GND or V
CC
;
OE/OE = Don’t care
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
V
= 3V to 3.6V; One input at V
CC
-0.6V,
Other inputs at V
CC
or GND
15
±
100
μ
A
I
CCH
I
CCL
I
CCZ
0.13
3
0.13
0.19
12
0.19
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 V
= 3.3V and T
= 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. This is the bus hold overdrive current required to force the input to the opposite logic state.
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