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參數(shù)資料
| 型號： | 74F657 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Octal transceiver with 8-bit parity generator/checker(帶8位奇偶發(fā)生器/校驗器的八收發(fā)器) |
| 中文描述： | 八路收發(fā)器帶有8位奇偶發(fā)生器/檢查（帶8位奇偶發(fā)生器/校驗器的八收發(fā)器） |
| 文件頁數(shù)： | 5/12頁 |
| 文件大小： | 109K |
| 代理商： | 74F657 |
Philips Semiconductors
Product specification
74F657
Octal transceiver with 8-bit parity generator/checker
90 July 30
5
FUNCTION TABLE
NUMBER OF INPUTS THAT ARE HIGH
INPUTS
T/R
INPUT/OUTPUT
PARITY
OUTPUTS
OUTPUTS MODE
OE
ODD/EVEN
ERROR
0, 2, 4, 6, 8
L
L
L
L
L
L
H
H
L
L
L
L
H
L
H
H
L
L
H
L
H
L
H
L
Z
Z
H
L
L
H
Transmit
Transmit
Receive
Receive
Receive
Receive
1, 3, 5, 7
L
L
L
L
L
L
H
H
H
L
L
L
L
X
H
L
H
H
L
L
X
L
H
H
L
H
L
Z
Z
Z
L
H
H
L
Z
Transmit
Transmit
Receive
Receive
Receive
Receive
Z
Don’t care
Notes to function table
1. H =
High voltage level
2. L
=
Low voltage level
3. X =
Don’t care
4. Z =
High impedance ”’off” state
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limit set forth in this table may impair the useful life of the device. Unless otherwise noted these limits are over the
operating free air temperature range.)
SYMBOL
PARAMETER
RATING
UNIT
V
CC
V
IN
I
IN
V
OUT
Supply voltage
–0.5 to +7.0
V
Input voltage
–0.5 to +7.0
V
Input current
–30 to +5
mA
Voltage applied to output in high output state
–0.5 to V
CC
V
I
OUT
Current applied to output in low output state
A0
– A7
48
mA
B0
– B7, PARITY, ERROR
128
mA
T
amb
Operating free air temperature range
Commercial range
0 to +70
°
C
°
C
°
C
Industrial range
–40 to +85
T
stg
Storage temperature range
–65 to +150
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
LIMITS
UNIT
MIN
NOM
MAX
V
CC
V
IH
V
IL
I
Ik
I
OH
Supply voltage
4.5
5.0
5.5
V
High–level input voltage
2.0
V
Low–level input voltage
0.8
V
Input clamp current
–18
mA
High–level output current
A0 – A7
–3
mA
B0
– B7, PARITY, ERROR
–15
mA
I
OL
Low–level output current
A0 – A7
24
mA
B0 – B7, PARITY, ERROR
64
mA
°
C
°
C
T
amb
Operating free air temperature range
Commercial range
0
+70
Industrial range
–40
+85
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74F657 WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| 74F657N | 制造商:Misc 功能描述: |
| 74F657SC | 功能描述:總線收發(fā)器 Octal Bidir Trans RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel |
| 74F657SCX | 功能描述:總線收發(fā)器 Octal Bidir Trans RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel |
| 74F657SDC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Single 8-bit Bus Transceiver |
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