74F807 Datasheet, PDF (4/8 Pages) –

Philips Semiconductors FAST Products
Octal shift/count registered transceiver
with adder and parity (3–State)
Product specification
FAST 74F807
FUNCTION TABLE
INPUTS
MR
CP
SO
S1
L
X
X
X
H
↑
L
L
INTERNAL
REGISTER
S2 CI/SI/CE
Qn
X
X
L
L
CI/SI/CE ^{CI/SI/CE + an0 + qn0}
OUTPUT
STATOUT
L
COUT
OPERATING MODE
Clear
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 = Lower case indicate the state of the referenced output prior to the low–to–high clock transition
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.
OE FUNCTION TABLE
INPUTS
OUTPUTS
OEa
OEb
An
Bn
L
L
active output
active output
L
H
active output
input
H
L
input
active output
H
H
input
input
NOTE: The outputs, whether An or Bn, are equal to the INTERNAL REGISTER Qn.
MODE
Enable A and B outputs
Enable A outputs, B inputs
A inputs, enable B outputs
A and B are inputs
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
Input voltage
Input current
Voltage applied to output in high output state
–0.5 to +7.0
V
–0.5 to +7.0
V
–30 to +5
mA
–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
Tstg
Storage temperature range
NOTE: When outputs are disabled the internal registers (Qn) operate as usual.
0 to +70
°C
–65 to +150
°C
June 18, 1991
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