參數(shù)資料
型號(hào): SN74HC42NSRE4
廠商: TEXAS INSTRUMENTS INC
元件分類: 編、解碼器及復(fù)用、解復(fù)用
英文描述: HC/UH SERIES, DECIMAL DECODER/DRIVER, INVERTED OUTPUT, PDSO16
封裝: GREEN, PLASTIC, SOP-16
文件頁(yè)數(shù): 12/16頁(yè)
文件大小: 619K
代理商: SN74HC42NSRE4
SN54HC42, SN74HC42
4LINE TO 10LINE DECODERS (1 of 10)
SCLS091D DECEMBER 1982 REVISED SEPTEMBER 2003
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
switching characteristics over recommended operating free-air temperature range, CL = 50 pF
(unless otherwise noted) (see Figure 1)
PARAMETER
FROM
TO
VCC
TA = 25°C
SN54HC42
SN74HC42
UNIT
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
2 V
65
150
225
190
tpd
A, B, C, or D
09
4.5 V
18
30
45
38
ns
tpd
A, B, C, or D
09
6 V
14
26
38
32
ns
2 V
28
75
110
95
tt
Any
4.5 V
8
15
22
19
ns
tt
Any
6 V
7
13
19
16
ns
operating characteristics, TA = 25°C
PARAMETER
TEST CONDITIONS
TYP
UNIT
Cpd
Power dissipation capacitance
No load
39
pF
PARAMETER MEASUREMENT INFORMATION
VOLTAGE WAVEFORM
INPUT RISE AND FALL TIMES
50%
10%
90%
VCC
0 V
tr
tf
Input
VOLTAGE WAVEFORMS
PROPAGATION DELAY AND OUTPUT TRANSITION TIMES
50%
10%
90%
VCC
VOH
VOL
0 V
tr
tf
Input
In-Phase
Output
50%
tPLH
tPHL
50%
10%
90%
VOH
VOL
tr
tf
tPHL
tPLH
Out-of-Phase
Output
Test
Point
From Output
Under Test
CL = 50 pF
(see Note A)
LOAD CIRCUIT
NOTES: A. CL includes probe and test-fixture capacitance.
B. Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by generators having the following
characteristics: PRR
≤ 1 MHz, ZO = 50 , tr = 6 ns, tf = 6 ns.
C. The outputs are measured one at a time with one input transition per measurement.
D. tPLH and tPHL are the same as tpd.
Figure 1. Load Circuit and Voltage Waveforms
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