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參數(shù)資料
| 型號： | SN74ACT240DB |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Low-Voltage CMOS Octal Transceiver; Package: TSSOP 20 LEAD; No of Pins: 20; Container: Rail; Qty per Container: 75 |
| 中文描述： | 八路緩沖器/ 3司機(jī)態(tài)輸出 |
| 文件頁數(shù)： | 4/5頁 |
| 文件大小： | 83K |
| 代理商： | SN74ACT240DB |
SN54ACT240, SN74ACT240
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCAS515B – JUNE 1995 – REVISED MAY 1996
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
switching characteristics over recommended operating free-air temperature range,
V
CC
= 5 V
±
0.5 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
TA = 25
°
C
TYP
SN54ACT240
MIN
1
SN74ACT240
MIN
1.5
UNIT
(OUTPUT)
MIN
1.5
MAX
8.5
MAX
9.5
MAX
9.5
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
A
Y
6
ns
1.5
5.5
7.5
1
9
1.5
8.5
OE
Y
1.5
7
8.5
1
10
1
9.5
ns
2
7
9.5
1
11.5
1.5
10.5
OE
Y
2
8
9.5
10
1
1
11
2
2
10.5
10.5
ns
2.5
6.5
11.5
operating characteristics, V
CC
= 5 V, T
A
= 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
Open
500
500
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
1.5 V
1.5 V
1.5 V
VCC
3 V
0 V
50% VCC
50% VCC
VOH
VOL
0 V
50% VCC
VOL + 0.3 V
50% VCC
0 V
3 V
Input
Output
VOLTAGE WAVEFORMS
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
, 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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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SN74ACT240DBR | 功能描述:緩沖器和線路驅(qū)動器 Tri-State Octal RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| SN74ACT240DBRE4 | 功能描述:緩沖器和線路驅(qū)動器 Octal Buffer/Driver With 3-State Outputs RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| SN74ACT240DBRG4 | 功能描述:緩沖器和線路驅(qū)動器 Octal Buffers/Driver RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| SN74ACT240DW | 功能描述:緩沖器和線路驅(qū)動器 Octal w/ Tri-St Out RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| SN74ACT240DWE4 | 功能描述:緩沖器和線路驅(qū)動器 Octal Buffer/Driver With 3-State Outputs RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
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