參數(shù)資料
型號(hào)： 935008220602
廠商： NXP SEMICONDUCTORS
元件分類： 總線收發(fā)器
英文描述： F/FAST SERIES, OCTAL 1-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24
封裝： 7.50 MM, PLASTIC, MS-013, SOT-137-1, SO-24
文件頁(yè)數(shù)： 10/14頁(yè)
文件大小： 159K
代理商： 935008220602
Philips Semiconductors
Product data
74F646A/74F648A
Transceivers/registers
2003 Feb 04
5
FUNCTION TABLE
INPUTS
DATA I/O
OPERATING MODE
OE
DIR
CPAB
CPBA
SAB
SBA
An
Bn
74F646A
74F648A
X
↑
X
Input
Unspecified*
Store A, B unspecified*
X
↑
X
Unspecified*
Input
Store B, A unspecified*
H
X
↑
X
Input
Store A and B data
H
X
H or L
X
Input
Isolation, hold storage
L
X
L
Output
Input
Real time B data to A bus
L
X
H or L
X
H
Output
Input
Stored B data to A bus
L
H
X
L
X
Input
Output
Real time A data to B bus
L
H
H or L
X
H
X
Input
Output
Stored A data to B bus
NOTES:
1. H = High-voltage level
2. L
= Low-voltage level
3. X = Don’t care
4.
↑ = LOW-to-HIGH clock transition
5. *
= The data output function may be enabled or disabled by various signals at the OE and DIR inputs. Data input functions are
always enabled, i.e., data at the bus pins will be stored on every LOW-to-HIGH transition of the clock.
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
72
mA
Tamb
Operating free air temperature range
0 to +70
°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
–
–15
mA
IOL
LOW-level output current
–
48
mA
Tamb
Operating free air temperature range
0
–
+70
°C
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