參數(shù)資料
型號: 74ABT20PWDH
廠商: NXP SEMICONDUCTORS
元件分類: 通用總線功能
英文描述: Dual 4-input NAND gate
中文描述: ABT SERIES, DUAL 4-INPUT NAND GATE, PDSO14
封裝: PLASTIC, TSSOP1-14
文件頁數(shù): 3/3頁
文件大小: 46K
代理商: 74ABT20PWDH
Philips Semiconductors
Product specification
74ABT20
Dual 4-input NAND gate
1995 Sep 22
3
AC CHARACTERISTICS
GND = 0V; t
R
= t
F
= 2.5ns; C
L
= 50pF, R
L
= 500
SYMBOL
PARAMETER
WAVEFORM
LIMITS
UNIT
T
amb
= +25
°
C
V
CC
= +5.0V
T
amb
= –40
°
C to +85
°
C
CC
= +5.0V
±
0.5V
MIN
TYP
MAX
MIN
MAX
t
PLH
t
PHL
Propagation delay
An, Bn, Cn, Dn to Yn
1
1.0
1.0
2.7
2.2
3.9
3.4
1.0
1.0
4.6
3.8
ns
t
t
OSHL
Output to Output skew
An or Bn to Yn
2
0.3
0.5
0.5
ns
NOTE:
1. Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same
device. The specification applies to any outputs switching in the the same direction, either HIGH–to-LOW (t
OSHL
) or LOW-to-HIGH (t
OSLH
);
parameter guaranteed by design.
AC WAVEFORMS
V
M
= 1.5V, V
IN
= GND to 3.0V
V
M
V
M
V
M
V
M
Yn
An, Bn,
Cn, Dn
t
PHL
t
PLH
SA00353
Waveform 1.
Propagation Delay for Inverting Outputs
OUTPUT N
same part
INPUT
SA00381
OUTPUT
t
PLH
MIN
t
PHL
MIN
t
PLHMAX
t
PHLMAX
t
OSLH
t
OSHL
Waveform 2. Common edge skew
TEST CIRCUIT AND WAVEFORMS
PULSE
GENERATOR
R
T
V
IN
D.U.T.
V
OUT
C
L
R
L
V
CC
Test Circuit for Outputs
V
M
V
M
t
W
AMP (V)
NEGATIVE
PULSE
10%
10%
90%
90%
0V
V
M
V
M
t
W
AMP (V)
POSITIVE
PULSE
90%
90%
10%
10%
0V
t
THL
(t
F
)
t
TLH
(t
R
)
t
THL
(t
F
)
t
TLH
(t
R
)
V
M
= 1.5V
Input Pulse Definition
DEFINITIONS
R
L
=
Load resistor; see AC CHARACTERISTICS for value.
C
L
=
Load capacitance includes jig and probe capacitance;
see AC CHARACTERISTICS for value.
R
T
=
Termination resistance should be equal to Z
OUT
of
pulse generators.
INPUT PULSE REQUIREMENTS
FAMILY
74ABT
SH00067
Amplitude
Rep. Rate
t
W
t
F
3.0V
1MHz
500ns
2.5ns
t
R
2.5ns
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