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參數(shù)資料
| 型號(hào)： | 74F2953 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Registered transceiver, non-inverting 3-State |
| 中文描述： | 注冊(cè)收發(fā)器，非反相三態(tài) |
| 文件頁(yè)數(shù)： | 9/14頁(yè) |
| 文件大?。?/td> | 142K |
| 代理商： | 74F2953 |
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Philips Semiconductors
Product specification
74F2952, 74F2953
Transceivers
1989 Sep 22
9
AC WAVEFORMS
For all waveforms, V
M
= 1.5V.
The shaded areas indicate when the input is permitted to change for predictable output.
t
W
(H)
t
PHL
CPBA
or
CPAB
An or Bn
V
M
V
M
V
M
V
M
V
M
1/f
MAX
t
W
(L)
t
PLH
SF01161
Waveform 1. Propagation Delay, Clock Input to Output,
Clock Pulse Width, and Maximum Clock Frequency
V
M
V
M
V
M
V
M
V
M
V
M
t
s
(H)
t
s
(L)
t
h
(H)
t
h
(H)
CPAB,
CPBA
An, Bn
CEAB,
CEBA
SF01381
Waveform 2. Data Setup and Hold Times
V
M
V
M
V
M
t
PHZ
t
PZH
V
OH
-0.3V
0V
OEAB,
OEBA
An, Bn
SF01382
Waveform 3. 3-State Output Enable Time to High Level
and Output Disable Time from High Level
V
M
V
M
V
M
t
PLZ
t
PZL
V
OL
+0.3V
SF01383
An, Bn
OEAB,
OEBA
Waveform 4. 3-State Output Enable Time to Low Level
and Output Disable Time from Low Level
TEST CIRCUIT AND WAVEFORMS
t
w
90%
V
M
10%
90%
V
M
10%
90%
V
M
10%
90%
V
M
10%
NEGATIVE
PULSE
POSITIVE
PULSE
t
w
AMP (V)
0V
0V
t
THL (
t
f
)
INPUT PULSE REQUIREMENTS
rep. rate
t
w
t
TLH
t
THL
1MHz
500ns
2.5ns
2.5ns
Input Pulse Definition
V
CC
family
74F
D.U.T.
PULSE
GENERATOR
R
L
C
L
R
T
V
IN
V
OUT
Test Circuit for 3-State Outputs
DEFINITIONS:
R
L
=
Load resistor;
see AC electrical characteristics for value.
Load capacitance includes jig and probe capacitance;
see AC electrical characteristics for value.
Termination resistance should be equal to Z
OUT
of
pulse generators.
C
L
=
R
T
=
t
THL (
t
f
)
t
TLH (
t
r
)
t
TLH (
t
r
)
AMP (V)
amplitude
3.0V
1.5V
V
M
R
L
7.0V
SF00777
TEST
t
PLZ
t
PZL
All other
SWITCH
closed
closed
open
SWITCH POSITION
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