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PDF 74F776 Data sheet ( Hoja de datos )
| Número de pieza | 74F776 | |
| Descripción | Pi-bus transceiver | |
| Fabricantes | Philips | |
| Logotipo |  |
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INTEGRATED CIRCUITS
74F776
Pi-bus transceiver
Product specification
IC15 Data Handbook
Philips
Semiconductors
1990 Dec 19
1 page  
Philips Semiconductors
Pi–bus transceiver
Product specification
74F776
FUNCTION TABLE
INPUTS
LATCH OUTPUTS
OPERATING MODE
An Bn* LE OEA OEB0 OEB1 STATE An Bn
HX L
L
L
L
H Z Z A 3–state, data from A to B
LXL
L
L
L
L ZL
XXH
L
L
L
Qn Z Qn A 3–state, latched data to B
––L
H
L
L
(1) (1) (1) Feedback: A to B, B to A
– HH
H
L
L
H (2)
H Z(2) Preconditioned latch enabling data transfer from B to A
– LH
H
L
L
H (2)
L Z(2)
– –H
H
L
L
Qn Qn Qn Latch state to A and B
HX L
L
H
X
H ZZ
LXL
L
H
X
L Z Z B and A 3–state
XXH
L
H
X
Qn Z Z
–HL
H
H
X
H HZ
–LL
H
H
X
L L Z B 3–state, data from B to A
– HH
H
H
X
Qn H Z
– LH
H
H
X
Qn L Z
HX L
L
X
H
H ZZ
LXL
L
X
H
L Z Z B and A 3–state
XXH
L
X
H
Qn Z Z
–HL
H
X
H
H HZ
–LL
H
X
H
L L Z B 3–state, data from B to A
– HH
H
X
H
Qn H Z
– LH
H
X
H
Qn L Z
Notes to function table
H = High voltage level
L = Low voltage level
X = Don’t care
– = Input not externally driven
Z = High impedance ”off” state
Qn = High or Low voltage level one setup time prior to the low–to–high LE transition.
(1) = Condition will cause a feedback loop path: A to B and B to A.
(2) = The latch must be preconditioned such that B inputs may assume a high or low level while OEB0 and OEB1 are low and LE is high.
B* = Precaution should be taken to insure the B inputs do not float. If they do they are equal to low state.
December 19, 1990
5
5 Page 
Philips Semiconductors
Pi-bus transceiver
PLCC28: plastic leaded chip carrier; 28 leads
Product specification
74F776
SOT261-2
1990 Dec 19
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet 74F776.PDF ] | |
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