參數資料
型號: 933795150602
廠商: NXP SEMICONDUCTORS
元件分類: 總線收發(fā)器
英文描述: F/FAST SERIES, OCTAL 1-BIT TRANSCEIVER, TRUE OUTPUT, PDIP24
封裝: 0.300 INCH, PLASTIC, MS-001, SOT-222-1, DIP-24
文件頁數: 8/12頁
文件大?。?/td> 111K
代理商: 933795150602
Philips Semiconductors
Product data
74F657
Octal transceiver with 8-bit parity generator/checker
2003 Feb 04
5
FUNCTION TABLE
NUMBER OF INPUTS THAT ARE HIGH
INPUTS
INPUT/OUTPUT
OUTPUTS
OE
T/R
ODD/EVEN
PARITY
ERROR
OUTPUTS MODE
L
H
Z
Transmit
L
H
L
Z
Transmit
02468
L
H
Receive
0, 2, 4, 6, 8
L
H
L
Receive
L
H
L
Receive
L
H
Receive
L
H
L
Z
Transmit
L
H
L
H
Z
Transmit
1357
L
H
L
Receive
1, 3, 5, 7
L
H
L
H
Receive
L
H
Receive
L
Receive
Don’t care
H
X
Z
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
VCC
Supply voltage
–0.5 to +7.0
V
VIN
Input voltage
–0.5 to +7.0
V
IIN
Input current
–30 to +5
mA
VOUT
Voltage applied to output in HIGH output state
–0.5 to VCC
V
IOUT
Current applied to output in LOW output state
A0–A7
48
mA
B0–B7, PARITY, ERROR
128
mA
Tamb
Operating free air temperature range
Commercial range
0 to +70
°C
Industrial range
–40 to +85
°C
Tstg
Storage temperature range
–65 to +150
°C
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
LIMITS
UNIT
MIN
NOM
MAX
VCC
Supply voltage
4.5
5.0
5.5
V
VIH
HIGH-level input voltage
2.0
V
VIL
LOW-level input voltage
0.8
V
IIk
Input clamp current
–18
mA
IOH
HIGH-level output current
A0–A7
–3
mA
B0–B7, PARITY, ERROR
–15
mA
IOL
LOW-level output current
A0–A7
24
mA
B0–B7, PARITY, ERROR
64
mA
Tamb
Operating free air temperature range
Commercial range
0
+70
°C
Industrial range
–40
+85
°C
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