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參數(shù)資料
| 型號： | 933906300602 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 總線收發(fā)器 |
| 英文描述： | F/FAST SERIES, OCTAL 1-BIT DRIVER, TRUE OUTPUT, PDSO24 |
| 封裝： | 7.50 MM, PLASTIC, MS-013AD, SOT-137-1, SO-24 |
| 文件頁數(shù)： | 7/10頁 |
| 文件大小： | 75K |
| 代理商： | 933906300602 |
Philips Semiconductors
Product specification
74F30244
Octal 30
line driver with enable, non-inverting
(open collector)
2000 Jun 30
6
TYPICAL PROPAGATION DELAYS VERSUS LOAD FOR OPEN COLLECTOR OUTPUTS
NOTE:
When using Open-Collector parts, the value of the pull-up resistor greatly affects the value of the tPLH. For example, changing the
specified pull-up resistor value from 500
to 100 will improve the tPLH up to 50% with only a slight increase in the tPHL. However,
if the value of the pull-up resistor is changed, the user must make certain that the total IOL current through the resistor and the total
IILs of the receivers does not exceed the IOL maximum specification.
tPLH
tPHL
600
500
400
300
200
100
0
1
2
3
4
5
6
7
8
9
LOAD RESISTOR (
)
PROP
AGA
TION
DELA
Y
(ns)
SF01386
TEST CIRCUIT AND WAVEFORMS
tw
90%
VM
10%
90%
VM
10%
90%
VM
10%
90%
VM
10%
NEGATIVE
PULSE
POSITIVE
PULSE
tw
AMP (V)
0V
tTHL (tf )
INPUT PULSE REQUIREMENTS
rep. rate
tw
tTLH
tTHL
1MHz
500ns
2.5ns
Input Pulse Definition
VCC
family
74F
D.U.T.
PULSE
GENERATOR
RL
CL
RT
VIN
VOUT
Test Circuit for Open Collector Outputs
DEFINITIONS:
RL = Load resistor;
see AC electrical characteristics for value.
CL = Load capacitance includes jig and probe capacitance;
see AC electrical characteristics for value.
RT = Termination resistance should be equal to ZOUT of
pulse generators.
tTHL (tf )
tTLH (tr )
AMP (V)
amplitude
3.0V
1.5V
VM
RL
7.0V
SF00027
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