參數(shù)資料
型號: 74LV257N
廠商: NXP SEMICONDUCTORS
元件分類: 通用總線功能
英文描述: Quad 2-input multiplexer 3-State
中文描述: LV/LV-A/LVX/H SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDIP16
文件頁數(shù): 7/12頁
文件大?。?/td> 114K
代理商: 74LV257N
Philips Semiconductors
Product specification
74LV257
Quad 2-input multiplexer (3-State)
1998 May 20
7
TEST CIRCUIT
PULSE
GENERATOR
R
T
V
I
D.U.T.
V
O
C
L
R
L
= 1K
V
CC
Test Circuit for switching times
DEFINITIONS
R
T
= Termination resistance should be equal to Z
OUT
of pulse generators.
R
L
= Load resistor
C
L
= Load capacitance includes jig and probe capacitance
V
CC
V
I
< 2.7V
V
CC
TEST
t
PLH/
t
PHL
2.7V
2.7–3.6V
SV00776
50pF
Figure 3. Load circuitry for switching times.
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