74F776 Ver la hoja de datos (PDF) - Philips Electronics
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Lista de partido
74F776 Datasheet PDF : 12 Pages
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Philips Semiconductors
Pi–bus transceiver
Product specification
74F776
PIN CONFIGURATION
VCC 1
OEA 2
A0 3
GND 4
A1 5
A2 6
A3 7
GND 8
A4 9
A5 10
GND 11
A6 12
A7 13
VX 14
28 LE
27 B0
26 B1
25 GND
24 B2
23 B3
22 GND
21 B4
20 B5
19 B6
18 GND
17 B7
16 OEB1
15 OEB0
SF00422
IEC/IEEE SYMBOL
&
15
EN2
16
28
EN1
2
EN3
3
ID
2
27
3
5
26
6
24
7
23
9
21
10
20
12
19
13
17
SF00424
PIN CONFIGURATION PLCC
GND A0 OEA VCC LE B0 B1
4 3 2 1 28 27 26
A1 5
25 GND
A2 6
24 B2
A3 7
23 B3
GND 8
A4 9
PLCC
22 GND
21 B4
A5 10
20 B5
GND 11
19 B6
12 13 14 15 16 17 18
A6 A7 VXOEB0 OEB1 B7 GND
SF00423
LOGIC SYMBOL
3 5 6 7 9 10 12 13
A0 A1 A2 A3 A4 A5 A6 A7
15
OEB0
2
OEA
28
LE
16
OEB1
B0 B1 B2 B3 B4 B5 B6 B7
27 26 24 23 21 20 19 17
VCC = Pin 1, VX = Pin 14
GND = Pin 4, 8, 11, 18, 22, 25
SF00425
PIN DESCRIPTION
SYMBOL
PINS
A0 – A7
3, 5, 6, 7, 9, 10, 12, 13
B0 – B7 27, 26, 24, 23, 21, 20, 19, 17
OEB0
15
OEB1
16
OEA
2
LE
28
VX
14
TYPE
I/O
I/O
Input
Input
Input
Input
Input
NAME AND FUNCTION
PNP latched input/3–state output (with VX control option)
Data input with special threshold circuitry to reject noise/ open collector output, high
current drive
Enables the B outputs when both pins are low
Enables the A outputs when high
Latched when high (a special feature is built in for proper enabling times)
Clamping voltage keeping VOH from rising above VX (VX = Vcc for normal use)
December 19, 1990
3
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