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參數(shù)資料
| 型號： | 74HC |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Plastic connectors for AC adapter, Small and high power supply; HRS No: 113-5151-8 01; Connector Type: Wire; Contact Gender: Female; Applicable Cable: Conductor AWG#18 to #22; Termination Style: Crimping; Current Rating(Amps)(Max.): 5; Contact Mating Area Plating: Palladium; Operating Temperature Range (degrees C): -25 to 85; General Description: Crimping type female contact; Strip contact |
| 中文描述： | HCMOS家庭特征 |
| 文件頁數(shù)： | 14/19頁 |
| 文件大小： | 87K |
| 代理商： | 74HC |
March 1988
14
Philips Semiconductors
HCMOS family characteristics
FAMILY SPECIFICATIONS
AC waveforms 74HCT (continued)
Test circuit for 74HCT
Fig.11 Propagation delays of 3-state outputs.
handbook, full pagewidth
MGK566
tPLZ
tPHZ
outputs
disabled
outputs
enabled
90%
10%
10%
90%
1.3 V
outputs
enabled
OUTPUT
LOW-to-OFF
OFF-to-LOW
OUTPUT
HIGH-to-OFF
OFF-to-HIGH
OUTPUT
ENABLE
tPZL
tf
tr
tPZH
1.3 V
1.3 V
Switch position
Note
1.
For open-drain N-channel outputs t
PLZ
and t
PZL
are applicable.
TEST
SWITCH
t
PZH
t
PZL
t
PHZ
t
PLZ
GND
V
CC
GND
V
CC
Fig.12 Test circuit for 3-state outputs.
C
L
=
load capacitance including jig and probe capacitance
(see AC CHARACTERISTICS for values).
R
T
=
termination resistance should be equal to the output impedance Z
o
of
the pulse generator.
handbook, full pagewidth
MGK563
D.U.T
VCC
VCC
VI
VO
RT
RL = 1 k
CL
50 pF
PULSE
GENERATOR
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