IDT74ALVCHR16409
3.3V CMOS 9-BIT, 4-PORT UNIVERSAL BUS EXCHANGER
EXTENDED COMMERCIAL TEMPERATURE RANGE
IDT74ALVCHR16409
3.3V CMOS 9-BIT, 4-PORT
UNIVERSAL BUS EXCHANGER
WITH 3-STATE OUTPUTS
AND BUS-HOLD
FEATURES:
0.5 MICRON CMOS Technology
Typical t
SK(0)
(Output Skew) < 250ps
ESD > 2000V per MIL-STD-883, Method 3015;
> 200V using machine model (C = 200pF, R = 0)
– 0.635mm pitch SSOP, 0.50mm pitch TSSOP,
and 0.40mm pitch TVSOP packages
– Extended commercial range of – 40°C to + 85°C
– V
CC
= 3.3V ± 0.3V, Normal Range
– V
CC
= 2.7V to 3.6V, Extended Range
– V
CC
= 2.5V ± 0.2V
– CMOS power levels (0.4µW typ. static)
– Rail-to-Rail output swing for increased noise margin
Drive Features for ALVCHR16409:
– Balanced Output Drivers: ±12mA
– Low switching noise
–
–
–
DESCRIPTION:
This 9-bit, 4-port universal bus exchanger is built using advanced
dual metal CMOS technology. The ALVCHR16409 allows synchronous
data exchange between four different buses. Data flow is controlled by
the select (SEL0–SEL4) inputs. A data-flow state is stored on the rising
edge of the clock (CLK) input if the select-enable (SELEN) input is low.
Once a data-flow state has been established, data is stored in the flip-flop
on the rising edge of CLK if SELEN is high. The data-flow control logic is
designed to allow glitch-free data transmission.
When preset (PRE) transitions high, the outputs are disabled imme-
diately without waiting for a clock pulse. To leave the high-impedance
state, both PRE and SELEN must be low and a clock pulse must be
applied.
The ALVCHR16409 has been designed with a ±24mA output driver.
This driver is capable of driving a moderate to heavy load while
maintaining speed performance.
The ALVCHR16409 has “bus-hold” which retains the inputs’ last state
whenever the input bus goes to a high impedance. This prevents floating
inputs and eliminates the need for pull-up/down resistors.
N
O
FO T
R
R E
N CO
EW M
M
D E
ES N
D
IG E
N D
S
APPLICATIONS:
•
3.3V High Speed Systems
•
3.3V and lower voltage computing systems
FUNCTIONAL BLOCK DIAGRAM
C LK
56
1
PRE
SELEN
55
28
SEL2
SEL0
SEL1
2
Flow and Storage Control
29
SEL3
SEL4
27
30
3
3
CLK
D
2
Ax
1
Ax
1
Bx
2
Ax
CLK
D
1
A
1
3
2
Bx
2
Bx
54
1
B
1
1
Ax
3
3
1
Bx
CLK
D
1
Ax
1
Ax
1
Bx
2
Ax
CLK
D
2
A
1
15
2
Bx
1
Bx
42
2
B
1
2
Ax
2
Bx
One of 9 Channels
EXTENDED COMMERCIAL TEMPERATURE RANGE
1
c
1999 Integrated Device Technology, Inc.
OCTOBER 1999
DSC-4586/-
IDT74ALVCHR16409
3.3V CMOS 9-BIT, 4-PORT UNIVERSAL BUS EXCHANGER
EXTENDED COMMERCIAL TEMPERATURE RANGE
PIN CONFIGURATION
PR E
SEL0
1
A
1
ABSOLUTE MAXIMUM RATING
56
55
54
53
52
51
50
49
48
47
46
45
(1)
Unit
V
V
°C
mA
mA
mA
mA
NEW16link
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
27
28
Symbol
V
TERM(2)
C LK
SELEN
1
B
1
V
TERM(3)
T
STG
I
OUT
I
IK
I
OK
I
CC
I
SS
GND
1
A
2
1
A
3
GN D
1
B
2
1
B
3
Description
Terminal Voltage
with Respect to GND
Terminal Voltage
with Respect to GND
Storage Temperature
DC Output Current
Continuous Clamp Current,
V
I
< 0 or V
I
>
V
CC
Continuous Clamp Current, V
O
< 0
Continuous Current through
each V
CC
or GND
Max.
– 0.5 to + 4.6
– 0.5 to
V
CC
+ 0.5
– 65 to + 150
– 50 to + 50
± 50
– 50
±100
V
CC
1
A
4
1
A
5
1
A
6
V
CC
1
B
4
1
B
5
1
B
6
GND
1
A
7
1
A
8
1
A
9
2
A
1
2
A
2
2
A
3
GND
1
B
7
1
B
8
1
B
9
2
B
1
2
B
2
2
B
3
44
SO56-1
SO56-2 43
SO56-3
42
41
40
39
38
37
36
35
34
33
32
31
30
29
NOTES:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM
RATINGS may cause permanent damage to the device. This is a
stress rating only and functional operation of the device at these or
any other conditions above those indicated in the operational sections
of this specification is not implied. Exposure to absolute maximum
rating conditions for extended periods may affect reliability.
2. V
CC
terminals.
3. All terminals except V
CC
.
CAPACITANCE
(T
A
= +25
o
C, f = 1.0MHz)
Symbol
C
IN
C
OUT
C
I/O
Parameter
(1)
Input Capacitance
Output
Capacitance
I/O Port
Capacitance
Conditions
V
IN
= 0V
V
OUT
= 0V
V
IN
= 0V
Typ.
5
7
7
Max.
7
9
9
Unit
pF
pF
pF
NEW16link
GND
2
A
4
2
A
5
2
A
6
GND
2
B
4
2
B
5
2
B
6
V
CC
2
A
7
2
A
8
V
CC
2
B
7
2
B
8
NOTE:
1. As applicable to the device type.
GND
2
A
9
GND
2
B
9
FUNCTION TABLE
Inputs
CLK
↑
↑
H
L
Send Port
L
H
X
X
(1)
Output
Receive Port
L
H
B
O
(2)
B
O
(2)
SEL1
SEL2
SEL4
SEL3
SSOP/TSSOP/TVSOP
TOP VIEW
PIN DESCRIPTION
Pin Names
PRE
SELEN
SEL0-SEL4
CLK
xAx
xBx
Description
Preset Input (Active LOW)
Select Enable Input (Active LOW)
Select Inputs
Clock Input
A-to-B Data Inputs or B-to-A 3-State Outputs
(1)
B-to-A Data Inputs or A-to-B 3-State Outputs
(1)
NOTES:
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don't Care
↑
= LOW-to-HIGH Transition
2. B
0
= Output level before the indicated steady-state input conditions were
established.
NOTE:
1. These pins have “Bus-Hold.” All other pins are standard inputs,
outputs, or I/Os.
2
IDT74ALVCHR16409
3.3V CMOS 9-BIT, 4-PORT UNIVERSAL BUS EXCHANGER
EXTENDED COMMERCIAL TEMPERATURE RANGE
DATA FLOW CONTROL
Inputs
PRE
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
SELEN
X
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
CLK
X
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
SEL0
X
X
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
SEL1
X
X
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
SEL2
X
X
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
SEL3
X
X
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
SEL4
X
X
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Data Flow
All outputs disabled
No change
None, all I/Os off
Not used
Not used
Not used
Not used
Not used
Not used
Not used
2A to 1A and 1B to 2B
2A to 1A
2B to 1B
2A to 1A and 2B to 1B
1A to 2A and 1B to 2B
1A to 2A
1B to 2B
1A to 2A and 2B to 1B
1A to 1B and 2B to 2A
1A to 1B
2A to 2B
1A to 1B and 2A to 2B
1B to 1A and 2A to 2B
1B to 1A
2B to 2A
1B to 1A and 2B to 2A
2B to 1A and 2A to 1B
1B to 2A
2B to 1A
2B to 1A and 1B to 2A
1A to 2B and 1B to 2A
1A to 2B
2A to 1B
1A to 2B and 2A to 1B
3
IDT74ALVCHR16409
3.3V CMOS 9-BIT, 4-PORT UNIVERSAL BUS EXCHANGER
EXTENDED COMMERCIAL TEMPERATURE RANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Operating Condition: TA = – 40°C to +85°C
Symbol
V
IH
V
IL
I
IH
I
IL
I
OZH
I
OZL
V
IK
V
H
I
CCL
I
CCH
I
CCZ
∆I
CC
Parameter
Input HIGH Voltage Level
Input LOW Voltage Level
Input HIGH Current
Input LOW Current
High Impedance Output Current
(3-State Output pins)
Clamp Diode Voltage
Input Hysteresis
Quiescent Power Supply Current
V
CC
= 2.3V, I
IN
= – 18mA
V
CC
= 3.3V
V
CC
= 3.6V
V
IN
= GND or V
CC
One input at V
CC
−
0.6V,
other inputs at V
CC
or GND
Test Conditions
V
CC
= 2.3V to 2.7V
V
CC
= 2.7V to 3.6V
V
CC
= 2.3V to 2.7V
V
CC
= 2.7V to 3.6V
V
CC
= 3.6V
V
CC
= 3.6V
V
CC
= 3.6V
V
I
= V
CC
V
I
= GND
V
O
= V
CC
V
O
= GND
Min.
1.7
2
—
—
—
—
—
—
—
—
—
Typ.
(1)
—
—
—
—
—
—
—
—
– 0.7
100
0.1
Max.
—
—
0.7
0.8
±5
±5
± 10
± 10
– 1.2
—
40
µA
µA
V
mV
µA
µA
V
Unit
V
Quiescent Power Supply
Current Variation
—
—
750
µA
NEW16link
NOTE:
1. Typical values are at V
CC
= 3.3V, +25°C ambient.
BUS-HOLD CHARACTERISTICS
Symbol
I
BHH
I
BHL
I
BHH
I
BHL
I
BHHO
I
BHLO
NEW16link
Parameter
(1)
Bus-Hold Input Sustain Current
Bus-Hold Input Sustain Current
Bus-Hold Input Overdrive Current
V
CC
= 3.0V
V
CC
= 2.3V
V
CC
= 3.6V
Test Conditions
V
I
= 2.0V
V
I
= 0.8V
V
I
= 1.7V
V
I
= 0.7V
V
I
= 0 to 3.6V
Min.
– 75
75
– 45
45
—
Typ.
(2)
—
—
—
—
—
Max.
—
—
—
—
± 500
Unit
µA
µA
µA
NOTES:
1. Pins with Bus-hold are identified in the pin description.
2. Typical values are at V
CC
= 3.3V, +25°C ambient.
4
IDT74ALVCHR16409
3.3V CMOS 9-BIT, 4-PORT UNIVERSAL BUS EXCHANGER
EXTENDED COMMERCIAL TEMPERATURE RANGE
OUTPUT DRIVE CHARACTERISTICS
Symbol
V
OH
Parameter
Output HIGH Voltage
V
CC
Test Conditions
(1)
= 2.3V to 3.6V
I
OH
= – 0.1mA
I
OH
= – 4mA
I
OH
= – 6mA
V
CC
= 2.7V
V
CC
= 3.0V
V
OL
Output LOW Voltage
V
CC
= 2.3V to 3.6V
V
CC
= 2.3V
V
CC
= 2.7V
V
CC
= 3.0V
I
OH
= – 4mA
I
OH
= – 8mA
I
OH
= – 6mA
I
OH
= – 12mA
I
OL
= 0.1mA
I
OL
= 4mA
I
OL
= 6mA
I
OL
= 4mA
I
OL
= 8mA
I
OL
= 6mA
I
OL
= 12mA
Min.
V
CC
– 0.2
1.9
1.7
2.2
2
2.4
2
—
—
—
—
—
—
—
Max.
—
—
—
—
—
—
—
0.2
0.4
0.55
0.4
0.6
0.55
0.8
NEW16link
Unit
V
V
CC
= 2.3V
V
NOTE:
1. V
IH
and V
IL
must be within the min. or max. range shown in the DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE table for the
appropriate V
CC
range. T
A
= – 40°C to + 85°C.
OPERATING CHARACTERISTICS, T
A
= 25
o
C
V
CC
= 2.5V ± 0.2V
Symbol
C
PD
C
PD
Parameter
Power Dissipation Capacitance per exchanger
Outputs enabled
Power Dissipation Capacitance per exchanger
Outputs disabled
Test Conditions
C
L
= 0pF, f = 10Mhz
Typical
V
CC
= 3.3V ± 0.3V
Typical
60
60
Unit
pF
pF
5
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