參數(shù)資料
型號(hào): 74AHCT257
廠商: NXP Semiconductors N.V.
英文描述: Quadruple 2-Input Positive-AND Gates 14-SOIC -40 to 85
中文描述: 四2輸入多路復(fù)用器,三態(tài)
文件頁(yè)數(shù): 6/20頁(yè)
文件大小: 98K
代理商: 74AHCT257
2000 Apr 03
6
Philips Semiconductors
Product specification
Quad 2-input multiplexer; 3-state
74AHC257;
74AHCT257
RECOMMENDED OPERATING CONDITIONS
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 60134); voltages are referenced to GND (ground = 0 V).
Notes
1.
2.
The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
For SO packages: above 70
°
C the value of P
D
derates linearly with 8 mW/K.
For TSSOP packages: above 60
°
C the value of P
D
derates linearly with 5.5 mW/K.
SYMBOL
PARAMETER
CONDITIONS
74AHC
74AHCT
UNIT
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
V
CC
V
I
V
O
T
amb
DC supply voltage
input voltage
output voltage
operating ambient temperature
2.0
0
0
40
40
5.0
+25
+25
5.5
5.5
V
CC
+85
+125
4.5
0
0
40
40
5.0
+25
+25
5.5
5.5
V
CC
+85
+125
V
V
V
°
C
°
C
see DC and AC
characteristics per
device
V
CC
= 3.3
±
0.3 V
V
CC
= 5
±
0.5 V
t
r
, t
f
(
t/
V)
input rise and fall time ratios
100
20
20
ns/V
ns/V
SYMBOL
PARAMETER
CONDITIONS
MIN.
0.5
0.5
MAX. UNIT
V
CC
V
I
I
IK
I
OK
DC supply voltage
input voltage
DC input diode current
DC output clamping diode
current
DC output sink current
DC V
CC
or GND current
storage temperature
power dissipation per package
+7.0
+7.0
20
±
20
V
V
mA
mA
V
I
<
0.5 V; note 1
V
O
<
0.5 V or V
O
> V
CC
+ 0.5 V; note 1
I
O
I
CC
; I
GND
T
stg
P
D
0.5 V < V
O
< V
CC
+ 0.5 V
65
±
25
±
75
+150
500
mA
mA
°
C
mW
for temperature range:
40 to +125
°
C; note 2
相關(guān)PDF資料
PDF描述
74AHCT259 Quadruple 2-Input Positive-AND Gates 14-SOIC -40 to 85
74AHC259 8-bit addressable latch(8位可尋址鎖存器)
74AHCT273 Quadruple 2-Input Positive-AND Gates 14-SOIC -40 to 85
74AHC273 Octal D-type flip-flop with reset;positive-edge trigger(帶復(fù)位的八D觸發(fā)器;上升沿觸發(fā))
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