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參數(shù)資料
| 型號： | 74F642 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Transceivers |
| 中文描述： | 收發(fā)器 |
| 文件頁數(shù)： | 7/10頁 |
| 文件大?。?/td> | 92K |
| 代理商： | 74F642 |
Philips Semiconductors
Product specification
74F641/74F642*
Transceivers
1999 Jan 08
7
* Discontinued part. Please see the Discontinued Products List.
AC WAVEFORMS (Continued)
For all waveforms, V
M
= 1.5V.
V
M
V
M
V
M
V
M
An or Bn
OE
t
PLH
t
PHL
SF01151
Waveform 3. Propagation Delay for OE to An or Bn Outputs
(74F642) (Bn or An Inputs in High State)
V
M
V
M
V
M
V
M
An or Bn
OE
t
PLH
t
PHL
SF01151
Waveform 4. Propagation Delay for OE to An or Bn Outputs
(74F641) (Bn or An Inputs in Low State)
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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| 74F645 WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
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