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参数资料
| 型号： | SN74ALS642A-1N |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 总线收发器 |
| 英文描述： | ALS SERIES, 8-BIT TRANSCEIVER, INVERTED OUTPUT, PDIP20 |
| 封装： | 0.300 INCH, ROHS COMPLIANT, PLASTIC, DIP-20 |
| 文件页数： | 12/17页 |
| 文件大小： | 543K |
| 代理商： | SN74ALS642A-1N |
SN74ALS641A, SN74ALS642A, SN74AS641
OCTAL BUS TRANSCEIVERS
WITH OPENCOLLECTOR OUTPUTS
SDAS300 MARCH 1995
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN74ALS641A
SN74ALS642A
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VIK
VCC = 4.5 V,
II = 18 mA
1.5
V
IOH
VCC = 4.5 V,
VOH = 5.5 V
0.1
mA
IOL = 12 mA
0.25
0.4
VOL
VCC = 4.5 V
IOL = 24 mA
0.35
0.5
V
VOL
VCC = 4.5 V
IOL = 48 mA
0.35
0.5
V
II
Control inputs
VCC = 5.5 V,
VI = 7 V
0.1
mA
IIH
Control inputs
VCC = 5.5 V,
VI = 2.7 V
20
A
IIH
A or B ports§
VCC = 5.5 V,
VI = 2.7 V
20
A
IIL
Control inputs
VCC = 5.5 V,
VI = 0.4 V
0.1
mA
IIL
A or B ports§
VCC = 5.5 V,
VI = 0.4 V
0.1
mA
SN74ALS641A
VCC = 5.5 V
Outputs high
25
37
ICC
SN74ALS641A
VCC = 5.5 V
Outputs low
33
47
mA
ICC
SN74ALS642A
VCC = 5.5 V
Outputs high
8
15
mA
SN74ALS642A
VCC = 5.5 V
Outputs low
18
28
All typical values are at VCC = 5 V, TA = 25°C.
Applies only to the -1 version and only if VCC is between 4.75 V and 5.25 V
§ For I/O ports, the parameters IIH and IIL include the off-state output current.
switching characteristics (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
RL = 680 ,
TA = MIN to MAX
UNIT
PARAMETER
(INPUT)
(OUTPUT)
SN74ALS641A
SN74ALS642A
UNIT
MIN
MAX
MIN
MAX
tPLH
A or B
B or A
5
25
10
30
ns
tPHL
A or B
B or A
3
18
5
22
ns
tPLH
OE
A or B
8
30
10
30
ns
tPHL
OE
A or B
8
30
15
38
ns
tPLH
DIR
A or B
8
32
10
30
ns
tPHL
DIR
A or B
8
32
15
38
ns
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SN74ALS642A-1NE4 | 功能描述:总线收发器 Octal Bus Transceiver O.C. RoHS:否 制造商:Fairchild Semiconductor 逻辑类型:CMOS 逻辑系列:74VCX 每芯片的通道数量:16 输入电平:CMOS 输出电平:CMOS 输出类型:3-State 高电平输出电流:- 24 mA 低电平输出电流:24 mA 传播延迟时间:6.2 ns 电源电压-最大:2.7 V, 3.6 V 电源电压-最小:1.65 V, 2.3 V 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-48 封装:Reel |
| SN74ALS642A-1NS | 制造商:Texas Instruments 功能描述:Bus XCVR Single 8-CH Open Collector 20-Pin SOP Bulk |
| SN74ALS642A-1NSR | 功能描述:总线收发器 Octal Bus Transceiver O.C. RoHS:否 制造商:Fairchild Semiconductor 逻辑类型:CMOS 逻辑系列:74VCX 每芯片的通道数量:16 输入电平:CMOS 输出电平:CMOS 输出类型:3-State 高电平输出电流:- 24 mA 低电平输出电流:24 mA 传播延迟时间:6.2 ns 电源电压-最大:2.7 V, 3.6 V 电源电压-最小:1.65 V, 2.3 V 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-48 封装:Reel |
| SN74ALS642A-1NSRE4 | 功能描述:总线收发器 Octal Bus Transceiver O.C. RoHS:否 制造商:Fairchild Semiconductor 逻辑类型:CMOS 逻辑系列:74VCX 每芯片的通道数量:16 输入电平:CMOS 输出电平:CMOS 输出类型:3-State 高电平输出电流:- 24 mA 低电平输出电流:24 mA 传播延迟时间:6.2 ns 电源电压-最大:2.7 V, 3.6 V 电源电压-最小:1.65 V, 2.3 V 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-48 封装:Reel |
| SN74ALS642A-1NSRG4 | 功能描述:总线收发器 OCTAL BUS TRANSCEIVER O.C. RoHS:否 制造商:Fairchild Semiconductor 逻辑类型:CMOS 逻辑系列:74VCX 每芯片的通道数量:16 输入电平:CMOS 输出电平:CMOS 输出类型:3-State 高电平输出电流:- 24 mA 低电平输出电流:24 mA 传播延迟时间:6.2 ns 电源电压-最大:2.7 V, 3.6 V 电源电压-最小:1.65 V, 2.3 V 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-48 封装:Reel |
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