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參數(shù)資料
| 型號： | SN74ACT241PWRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 總線收發(fā)器 |
| 英文描述： | ACT SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, PDSO20 |
| 封裝： | GREEN, PLASTIC, TSSOP-20 |
| 文件頁數(shù)： | 13/18頁 |
| 文件大小： | 743K |
| 代理商： | SN74ACT241PWRG4 |
SN54ACT241, SN74ACT241
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCAS516C JUNE 1995 REVISED OCTOBER 2002
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
switching
characteristics
over
recommended
operating
free-air
temperature
range,
VCC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
TO
TA = 25°C
SN54ACT241
SN74ACT241
UNIT
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
tPLH
A
Y
1.5
6
8.5
1
9.5
1.5
9.5
ns
tPHL
A
Y
1.5
5.5
7.5
1
9
1.5
8.5
ns
tPZH
OE or OE
Y
1.5
7
8.5
1
10
1
9.5
ns
tPZL
OE or OE
Y
2
7
9.5
1
11.5
1.5
10.5
ns
tPHZ
OE or OE
Y
2
8
9.5
1
11
2
10.5
ns
tPLZ
OE or OE
Y
2.5
6.5
10
1
11.5
2
10.5
ns
operating characteristics, VCC = 5 V, TA = 25°C
PARAMETER
TEST CONDITIONS
TYP
UNIT
Cpd
Power dissipation capacitance per buffer/driver
CL = 50 pF,
f = 1 MHz
45
pF
PARAMETER MEASUREMENT INFORMATION
From Output
Under Test
CL = 50 pF
(see Note A)
LOAD CIRCUIT
S1
2
× VCC
500
Ω
500
Ω
tPLH
tPHL
Output
Control
(low-level
enabling)
Output
Waveform 1
S1 at 2
× VCC
(see Note B)
Output
Waveform 2
S1 at Open
(see Note B)
VOL
VOH
tPZL
tPZH
tPLZ
tPHZ
1.5 V
≈VCC
3 V
0 V
50% VCC
VOH
VOL
0 V
50% VCC
VOL + 0.3 V
50% VCC
≈0 V
3 V
Open
Input
Output
VOLTAGE WAVEFORMS
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
Open
2
× VCC
Open
TEST
S1
VOH 0.3 V
NOTES: A. CL includes probe and jig capacitance.
B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
C. All input pulses are supplied by generators having the following characteristics: PRR
≤ 1 MHz, ZO = 50 Ω, tr ≤ 2.5 ns, tf ≤ 2.5 ns.
D. The outputs are measured one at a time with one input transition per measurement.
Figure 1. Load Circuit and Voltage Waveforms
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