參數(shù)資料
型號(hào): 74ACT257SCQR
英文描述: Low-Power µP Reset Circuits in 3-Pin SC70/SOT23
中文描述: 2,輸入數(shù)字復(fù)接器
文件頁數(shù): 4/8頁
文件大?。?/td> 60K
代理商: 74ACT257SCQR
74AC20
4/8
CAPACITIVE CHARACTERISTICS
1) C
PD
is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without
load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. I
CC(opr)
=C
PD
x V
CC
x f
IN
+I
CC
/2 (per gate)
TEST CIRCUIT
C
L
= 50pF or equivalent (includes jig and probe capacitance)
R
L
= R
1
= 500
or equivalent
R
T
= Z
OUT
of pulse generator (typically 50
)
WAVEFORM: PROPAGATION DELAYS
(f=1MHz; 50% duty cycle)
Symbol
Parameter
Test Condition
Value
Unit
V
CC
(V)
T
A
= 25
°
C
-40 to 85
°
C
-55 to 125
°
C
Min.
Typ.
Max.
Min.
Max.
Min.
Max.
C
IN
C
PD
Input Capacitance
Power Dissipation
Capacitance
(note 1)
5.0
5.0
4
pF
f
IN
= 10MHz
33
pF
相關(guān)PDF資料
PDF描述
74ACT258PCQR 2-Input Digital Multiplexer
74ACT258SCQR Low-Power µP Reset Circuits in 3-Pin SC70/SOT23
74AC2526PC Eight Distributed-Output Clock Driver
54AC20LM Logic IC
54AC20LMQB Single-/Dual-/Triple-Voltage µP Supervisory Circuits with Independent Watchdog Output
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