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參數(shù)資料
| 型號： | 74F807 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Octal shift/count registered transceiver with adder and parity 3.State |
| 中文描述： | 八進(jìn)制移位/罪名加法器和奇偶3.State登記收發(fā)器 |
| 文件頁數(shù)： | 4/8頁 |
| 文件大小： | 72K |
| 代理商： | 74F807 |
Philips Semiconductors FAST Products
Product specification
FAST 74F807
Octal shift/count registered transceiver
with adder and parity (3–State)
June 18, 1991
4
FUNCTION TABLE
INPUTS
INTERNAL
REGISTER
OUTPUT
OPERATING MODE
MR
CP
SO
S1
S2
CI/SI/CE
Qn
STATOUT
L
X
X
X
X
X
L
L
Clear
H
↑
L
L
L
CI/SI/CE
CI/SI/CE + an0 + qn0
COUT
Add mode w/carry in
H
↑
↑
L
L
H
X
an0 + qn0
COUT
Add mode wo/carry in
H
L
H
L
H
qn0 + 1
TC (1)
Count w/count enable (count)
H
X
L
H
H
L
qn0
TC (1)
Count w/count enable (hold)
H
↑
↑
↑
↑
L
H
H
X
qn0 + 1
TC (1)
Count wo/count enable
H
H
L
L
CI/SI/CE
(3)
Q7
Shift
H
H
L
H
X
An0
parity (2)
Load A ports
H
H
H
L
X
Bn0
parity (2)
Load B ports
H
X
H
H
H
X
Qn0
parity (2)
Hold
Notes to function table
1. H =
High–voltage level
2. L
=
Low–voltage level
3. a, b, q
=
4. X =
Don’t care
5. Z =
High impedance ”off)” state
6.
↑
=
Low–to–high clock transition.
7. (1) =
Terminal count is high when the output is a terminal count (HHHHHHHH).
8. (2) =
Parity is high for odd number of internal register bits high, low for even number of internal register bits high.
9. (3) =
CI/SI/CE
→
Q0
→
Q1, etc.
Lower case indicate the state of the referenced output prior to the low–to–high clock transition
OE FUNCTION TABLE
INPUTS
OUTPUTS
MODE
OEa
OEb
An
Bn
L
L
active output
active output
Enable A and B outputs
L
H
active output
input
Enable A outputs, B inputs
H
L
input
active output
A inputs, enable B outputs
H
H
input
input
A and B are inputs
NOTE: The outputs, whether An or Bn, are equal to the INTERNAL REGISTER Qn.
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limits 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
48
mA
T
amb
Operating free air temperature range
0 to +70
°
C
°
C
Tstg
Storage temperature range
–65 to +150
NOTE: When outputs are disabled the internal registers (Qn) operate as usual.
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