參數(shù)資料
型號(hào)： 933723930602
廠商： NXP SEMICONDUCTORS
元件分類： 門電路
英文描述： F/FAST SERIES, QUAD 2-INPUT NAND GATE, PDIP14
封裝： 0.300 INCH, PLASTIC, SOT-27-1, DIP-14
文件頁(yè)數(shù)： 4/8頁(yè)
文件大小： 70K
代理商： 933723930602
Philips Semiconductors
Product specification
74F38
Quad 2-input NAND buffer (open collector)
October 4, 1990
4
AC ELECTRICAL CHARACTERISTICS
LIMITS
TEST
VCC = +5.0V
VCC = +5.0V ± 10%
SYMBOL
PARAMETER
TEST
CONDITION
Tamb = +25°C
Tamb = 0°C to +70°C
Tamb = –40°C to +85°C
UNIT
CONDITION
CL = 50pF, RL = 500
MIN
TYP
MAX
MIN
MAX
MIN
MAX
tPLH
tPHL
Propagation delay
Dna, Dnb to Qn
Waveform 1
7.5
1.5
10.0
3.0
12.5
5.0
7.5
1.5
13.0
5.5
7.5
1.5
14.5
6.0
ns
AC WAVEFORMS
VM
Qn
Dna, Dnb
tPHL
tPLH
SF00005
Waveform 1.
Propagation delay for inverting outputs
NOTE:
For all waveforms, VM = 1.5V.
TYPICAL PROPAGATION DELAYS VERSUS LOAD FOR OPEN COLLECTOR OUTPUTS
0
2
4
6
8
10
12
14
16
18
0
100
200
300
400
500
600
tPHL
tPLH
Load resistor
()
Propagation
delay
(ns)
SF00044
NOTE:
1
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 IIL’s of the receivers does
not exceed the IOL minimum specification.
相關(guān)PDF資料
PDF描述
933754090623 F/FAST SERIES, QUAD 2-INPUT NAND GATE, PDSO14
933754090602 F/FAST SERIES, QUAD 2-INPUT NAND GATE, PDSO14
935032380602 F/FAST SERIES, QUAD 2-INPUT NAND GATE, PDIP14
933728090112 REAL TIME CLOCK, PDIP16
933728070118 REAL TIME CLOCK, PDSO16
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