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參數(shù)資料
| 型號： | LVC257A |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Quad 2-input multiplexer with 5 Volt tolerant inputs/outputs (3-State) |
| 中文描述： | 四2與5伏容限輸入的輸入多路復(fù)用器/輸出（3態(tài)） |
| 文件頁數(shù)： | 5/10頁 |
| 文件大?。?/td> | 380K |
| 代理商： | LVC257A |
Philips Semiconductors
Product specification
74LVC257A
Quad 2-input multiplexer with 5 Volt tolerant
inputs/outputs (3-State)
1998 Jul 29
5
DC ELECTRICAL CHARACTERISTICS
Over recommended operating conditions voltages are referenced to GND (ground = 0V)
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
Temp = -40
°
C to +85
°
C
UNIT
MIN
TYP
1
MAX
V
IH
HIGH level Input voltage
V
CC
= 1.2V
V
CC
V
V
CC
= 2.7 to 3.6V
2.0
V
IL
LOW level Input voltage
V
CC
= 1.2V
GND
V
V
CC
= 2.7 to 3.6V
0.8
V
CC
= 2.7V; V
I
= V
IH
or V
IL
; I
O
= –12mA
V
CC
0.5
V
OH
HIGH level output voltage
V
CC
= 3.0V; V
I
= V
IH
or V
IL
; I
O
= –100
μ
A
V
CC
0.2
V
CC
V
V
CC
= 3.0V; V
I
= V
IH
or V
IL;
I
O
= –18mA
V
CC
0.6
V
CC
= 3.0V; V
I
= V
IH
or V
IL;
I
O
= –24mA
V
CC
0.8
V
CC
= 2.7V; V
I
= V
IH
or V
IL
; I
O
= 12mA
0.40
V
OL
LOW level output voltage
V
CC
= 3.0V; V
I
= V
IH
or V
IL
; I
O
= 100
μ
A
GND
0.20
V
V
CC
= 3.0V; V
I
= V
IH
or V
IL;
I
O
= 24mA
0.55
I
I
Input leakage current
V
CC
= 3 6V; V = 5 5V or GND
I
= 5.5V or GND
0 1
0.1
5
μ
A
I
OZ
3-State output OFF-state current
V
CC
= 3.6V; V
I
= V
IH
or V
IL
; V
O
= V
CC
or GND
0.1
5
μ
A
I
OFF
Power off leakage current
V
CC
= 0.0V; V
I
or V
O
= 5.5V
0.1
10
μ
A
I
CC
Quiescent supply current
V
CC
= 3.6V; V
I
= V
CC
or GND; I
O
= 0
0.1
10
μ
A
I
CC
Additional quiescent supply current per
input pin
V
CC
= 2.7V to 3.6V; V
I
= V
CC
–0.6V; I
O
= 0
5
500
μ
A
NOTES:
1. All typical values are at V
CC
= 3.3V and T
amb
= 25
°
C.
AC CHARACTERISTICS
GND = 0 V; t
r
= t
f
2.5 ns; C
L
= 50 pF; R
L
= 500 ; T
amb
= –40 C to +85 C
LIMITS
SYMBOL
PARAMETER
WAVEFORM
V
CC
= 3.3V
±
0.3V
MIN
TYP
1
V
CC
= 2.7V
TYP
1
V
CC
= 1.2V
TYP
UNIT
MAX
MIN
MAX
t
PHL
/t
PLH
Propagation delay
nl
0
to nY
nl
1
to nY
Propagation delay
S to nY
3-state output enable time
OE to nY
3-state output disable time
OE to nY
Figures 1, 3
1.5
3.9
5.1
1.5
3.3
6.1
11
ns
t
PHL
/t
PLH
Figures 1, 3
1.5
3.5
6.4
1.5
4.3
7.5
14
ns
t
PZH/
t
PZL
Figures 2, 3
1.5
3.7
6.5
1.5
4.6
7.5
15
ns
t
PHZ/
t
PLZ
Figures 2, 3
1.5
3.2
5.2
1.5
3.5
6.2
12
ns
NOTE:
1. These typical values are at V
CC
= 3.3V and T
amb
= 25
°
C.
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