參數(shù)資料
型號(hào)： HCT244
廠商： System Logic Semiconductor Co., Ltd.
英文描述： TRANSIENT SUPPRESSOR DIODE,SINGLE,UNIDIRECTIONAL,342V V(RWM),Axial-9.5 RoHS Compliant: Yes
中文描述： 八路三態(tài)同相緩沖器/線路驅(qū)動(dòng)器/線接收器（高性能硅柵CMOS）
文件頁(yè)數(shù)： 4/5頁(yè)
文件大小： 47K
代理商： HCT244
SL74HCT244
S ystem Logic
Semiconductor
SLS
AC ELECTRICAL CHARACTERISTICS
(V
CC
=5.0 V
±
10%, C
L
=50pF,Input t
r
=t
f
=6.0 ns)
Guaranteed Limit
Symbol
Parameter
25
°
C to
-55
°
C
≤
85
°
C
≤
125
°
C
Unit
t
PLH
, t
PHL
Maximum Propagation Delay, A to YA or B to YB
(Figures 1 and 3)
20
25
30
ns
t
PLZ
, t
PHZ
Maximum Propagation Delay , Output Enable to
YA or YB (Figures 2 and 4)
26
33
39
ns
t
PZL
, t
PZH
Maximum Propagation Delay , Output Enable to
YA or YB (Figures 2 and 4)
22
28
33
ns
t
TLH
, t
THL
Maximum Output Transition Time, Any Output
(Figures 1 and 3)
12
15
18
ns
C
IN
Maximum Input Capacitance
10
10
10
pF
C
OUT
Maximum Three-State Output Capacitance
(Output in High-Impedance State)
15
15
15
pF
Power Dissipation Capacitance (Per Enabled
Output)
Typical @25
°
C,V
CC
=5.0 V
C
PD
Used to determine the no-load dynamic power
consumption:
P
D
=C
PD
V
CC
2
f+I
CC
V
CC
55
pF
Figure 1. Switching Waveforms
Figure 2. Switching Waveforms
Figure 3. Test Circuit
Figure 4. Test Circuit
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