Philips Semiconductors
Product specification
FB2031
9-bit latched/registered/pass-thru Futurebus+ transceiver
2
1995 May 25
853-1714 15279
FEATURES
Latched, registered or straight through in
either A to B or B to A path
Drives heavily loaded backplanes with
equivalent load impedances down to 10
.
High drive 100mA BTL open collector
drivers on B-port
Allows incident wave switching in heavily
loaded backplane buses
Reduced BTL voltage swing produces less
noise and reduces power consumption
Built-in precision band-gap reference
provides accurate receiver thresholds and
improved noise immunity
Compatible with IEEE Futurebus+ or
proprietary BTL backplanes
Each BTL driver has a dedicated Bus GND
for a signal return
Controlled output ramp and multiple GND
pins minimize ground bounce
Glitch-free power up/power down operation
Low I
CC
current
Tight output skew
Supports live insertion
QUICK REFERENCE DATA
SYMBOL
t
PLH
t
PHL
t
PLH
t
PHL
C
O
I
OL
PARAMETER
TYPICAL
UNIT
Propagation delay
An to Bn
Propagation delay
Bn to An
Output capacitance (B0 – Bn only)
Output current (B0 – Bn only)
2.7
ns
4.4
4.2
6
100
ns
pF
mA
I
CC
Supply current
AIn to Bn
(outputs Low or High)
Bn to AOn (outputs Low)
Bn to AOn (outputs High)
17
mA
50
25
mA
ORDERING INFORMATION
PACKAGE
COMMERCIAL RANGE
V
CC
= 5V
±
10%; T
amb
= 0
°
C to +70
°
C
FB2031BB
INDUSTRIAL RANGE
V
CC
= 5V
±
10%; T
amb
= –40
°
C to +85
°
C
CD3206BB
DRAWING
NUMBER
SOT379-1
52-pin Plastic Quad Flat Pack (QFP)
PIN CONFIGURATION
52 51 50 49 48 47 46
45 44 43 42 41 40
39
38
37
36
35
34
33
32
31
30
29
28
27
1
2
3
4
5
6
7
8
9
10
11
12
13
14 15
16 17 18 19
20 21
22 23 24 25 26
BUS GND
B1
BUS GND
B2
BUS GND
B3
BUS GND
B4
BUS GND
B5
BUS GND
B6
BUS GND
LOGIC GND
A2
A3
A4
LOGIC GND
A5
A6
A7
LOGIC GND
B
B
B
A
A
O
B
B
V
V
9-Bit latched/registered transceiver
FB2031
52-lead PQFP
L
B
S
O
B
A
O
T
T
B
V
T
T
S
L
L
LOGIC GND
LOGIC GND
LOGIC GND
LOGIC GND
SG00060