參數(shù)資料
型號(hào): 74F40
廠商: NXP Semiconductors N.V.
英文描述: Dual 4-input NAND buffer
中文描述: 雙路4輸入與非緩沖
文件頁(yè)數(shù): 3/3頁(yè)
文件大小: 34K
代理商: 74F40
Philips Semiconductors FAST Products
Product specification
74F40
Dual 4-input NAND buffer
April 11, 1989
3
AC ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
TEST
CONDITION
LIMITS
UNIT
V
CC
= +5.0V
T
amb
= +25
°
C
C
L
= 50pF, R
L
= 500
V
CC
= +5.0V
±
10%
T
amb
= 0
°
C to +70
°
C
C
L
= 50pF, R
L
= 500
MIN
TYP
MAX
MIN
MAX
t
PLH
t
PHL
Propagation delay
Dna, Dnb, Dnc, Dnd to Qn
Waveform 1
2.0
1.5
4.0
3.0
6.0
5.0
1.5
1.0
7.0
5.5
ns
AC WAVEFORMS
V
M
V
M
V
M
V
M
Qn
Dna, Dnb, Dnc, Dnd
t
PHL
t
PLH
SF00069
Waveform 1.
Propagation Delay for Inverting Outputs
NOTE:
For all waveforms, V
M
= 1.5V.
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
2.5ns
t
THL
2.5ns
1MHz
500ns
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 Totem-Pole 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
SF00006
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