IDT74ALVCH32501
3.3V CMOS 36-BIT UNIVERSAL BUS TRANSCEIVER
EXTENDED COMMERCIAL TEMPERATURE RANGE
3.3V CMOS 36-BIT
UNIVERSAL BUS TRANS-
CEIVER WITH 3-STATE
OUTPUTS AND BUS-HOLD
FEATURES:
–
–
–
–
–
–
–
–
–
–
0.5 MICRON CMOS Technology
Typical t
SK
(o) (Output Skew) < 250ps
ESD > 2000V per MIL-STD-883, Method 3015;
> 200V using machine model (C = 200pF, R = 0)
0.8mm pitch LFBGA package, 114 balls
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 (0.4µ W typ. static)
Rail-to-Rail output swing for increased noise margin
IDT74ALVCH32501
DESCRIPTION:
This 36-bit universal bus transceiver is built using advanced dual metal
CMOS technology. The ALVCH32501 combines D-type latches and D-
type flip-flops to allow data flow in transparent latched and clocked modes.
Data flow in each direction is controlled by output-enable (OEAB and
OEBA),
latch enable (LEAB and LEBA), and clock (CLKAB and CLKBA)
inputs. For A-to-B data flow, the device operates in transparent mode when
LEAB is high. When LEAB is low, the A data is latched if CLKAB is held at
a HIGH or low logic level. If LEAB is low, the A bus data is stored in the
latch/flip-flop on the low-to-high transition of CLKAB. OEAB performs the
output enable function on the B port. Data flow from B port to A port is similar
but requires using
OEBA,
LEBA and CLKBA. Flow-through organization
of signal pins simplifies layout. All inputs are designed with hysteresis for
improved noise margin.
This ALVCH32501 has been designed with a ±24mA output driver. This
driver is capable of driving a moderate to heavy load while maintaining
speed performance.
The ALVCH32501 has “bus-hold” which retains the inputs’ last state
whenever the input goes to a high impedance. This prevents floating inputs
and eliminates the need for pull-up/down resistors.
Drive Features for ALVCH32501:
– High Output Drivers: ±24mA
– Suitable for heavy loads
APPLICATIONS:
• 3.3V High Speed Systems
• 3.3V and lower voltage computing systems
FUNCTIONAL BLOCK DIAGRAM
1
OEAB
1
CLKBA
1
LEBA
1
OEBA
1
CLKAB
1
LEAB
B3
J4
K3
J3
A4
A3
2
OEAB
2
CLKBA
2
LEBA
2
OEBA
2
CLKAB
2
LEAB
C
C
D
A5
L3
V4
W3
V3
K5
K2
C
C
D
L5
1
A
1
A2
1
B
1
D
2
A
1
L2
2
B
1
D
C
D
C
D
C
D
C
D
TO 17 OTHER CHANNELS
TO 17 OTHER CHANNELS
EXTENDED COMMERCIAL TEMPERATURE RANGE
1
c
1999 Integrated Device Technology, Inc.
FEBRUARY 2000
DSC-4764/-
IDT74ALVCH32501
3.3V CMOS 36-BIT UNIVERSAL BUS TRANSCEIVER
EXTENDED COMMERCIAL TEMPERATURE RANGE
PIN CONFIGURATION
6
1
B
2
1
B
4
1
B
6
1
B
8
1
B
10
1
B
12
1
B
14
1
B
15
1
B
17
NC
2
B
2
2
B
4
2
B
6
2
B
8
2
B
10
2
B
12
2
B
14
2
B
15
2
B
17
5
1
B
1
1
B
3
1
B
5
1
B
7
1
B
9
1
B
11
1
B
13
1
B
16
1
B
18
2
CLKAB
2
B
1
2
B
3
2
B
5
2
B
7
2
B
9
2
B
11
2
B
13
2
B
16
2
B
18
4 1
CLKAB
GN D
GN D
V
CC
GN D
GN D
V
CC
GN D
1
CLKBA
GN D
GN D
GN D
V
CC
GN D
GN D
V
CC
GN D
2
CLKBA
GN D
3
1
LEA B
1
OEA B
GN D
V
CC
GN D
GN D
V
CC
GN D
1
OEB A
1
LEBA
2
OEA B
GN D
V
CC
GN D
GN D
V
CC
GN D
2
OEBA
2
LEB A
2
1
A
1
1
A
3
1
A
5
1
A
7
1
A
9
1
A
11
1
A
13
1
A
16
1
A
18
2
LEAB
2
A
1
2
A
3
2
A
5
2
A
7
2
A
9
2
A
11
2
A
13
2
A
16
2
A
18
1
1
A
2
A
1
A
4
B
1
A
6
C
1
A
8
D
1
A
10
E
1
A
12
F
1
A
14
G
1
A
15
H
1
A
17
J
NC
K
2
A
2
L
2
A
4
M
2
A
6
N
2
A
8
P
2
A
10
R
2
A
12
T
2
A
14
U
2
A
15
V
2
A
17
W
32501
LFBGA
TOP VIEW
LFBGA
114 BALL LFBGA PACKAGE ATTRIBUTES
TOPVIEW
1.5m m M ax.
1.4m m N om .
1.3m m M in.
0.8m m
6
5
4
3
2
1
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
T
U
V
W
TOP VIEW
A
1
B
C
D
E
F
G
H
J
K
L
M
N
P
R
T
U
V
W
2
3
5.5m m
4
5
6
16m m
2
IDT74ALVCH32501
3.3V CMOS 36-BIT UNIVERSAL BUS TRANSCEIVER
EXTENDED COMMERCIAL TEMPERATURE RANGE
ABSOLUTE MAXIMUM RATING
Symbol
V
TERM(2)
V
TERM(3)
T
STG
I
OUT
I
IK
I
OK
I
CC
I
SS
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
(1)
Unit
V
V
°C
mA
mA
mA
mA
NEW16link
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
Max.
– 0.5 to + 4.6
– 0.5 to
V
CC
+ 0.5
– 65 to + 150
– 50 to + 50
± 50
– 50
±100
NOTE:
1. As applicable to the device type.
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
.
FUNCTION TABLE
(1,2)
OEAB
L
H
H
H
H
H
H
Inputs
LEAB
CLKAB
X
H
H
L
L
L
L
X
X
X
↑
↑
L
H
Outputs
xAx
X
L
H
L
H
X
X
xBx
Z
L
H
L
H
B
0(3)
B
0(4)
PIN DESCRIPTION
Pin Names
OEAB
OEBA
LEAB
LEBA
CLKAB
CLKBA
xAx
xBx
Description
A-to-B Output Enable Input
B-to-A Output Enable Input (Active LOW)
A-to-B Latch Enable Input
B-to-A Latch Enable Input
A-to-B Clock Input
B-to-A 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)
NOTE:
1. These pins have “Bus-Hold.” All other pins are standard inputs,
outputs, or I/Os.
NOTES:
1. A-to-B data flow is shown. B-to-A data flow is similar but uses OEBA,
LEBA, and CLKBA.
2. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care
Z = High Impedance
↑
= LOW-to-HIGH Transition
3. Output level before the indicated steady-state input conditions were
established.
4. Output level before the indicated steady-state input conditions were
established, provided that CLKAB was high before LEAB went low.
c 1998 Integrated Device Technology, Inc.
3
DSC-123456
IDT74ALVCH32501
3.3V CMOS 36-BIT UNIVERSAL BUS TRANSCEIVER
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
Quiescent Power Supply
Current Variation
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
—
—
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
IDT74ALVCH32501
3.3V CMOS 36-BIT UNIVERSAL BUS TRANSCEIVER
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
= – 6mA
I
OH
= – 12mA
Min.
V
CC
– 0.2
2
1.7
2.2
2.4
I
OH
= – 24mA
I
OL
= 0.1mA
I
OL
= 6mA
I
OL
= 12mA
V
CC
= 2.7V
V
CC
= 3.0V
I
OL
= 12mA
I
OL
= 24mA
2
—
—
—
—
—
Max.
—
—
—
—
—
—
0.2
0.4
0.7
0.4
0.55
NEW16link
Unit
V
V
CC
= 2.3V
V
CC
= 2.3V
V
CC
= 2.7V
V
CC
= 3.0V
V
CC
= 3.0V
V
OL
Output LOW Voltage
V
CC
= 2.3V to 3.6V
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
Outputs enabled
Power Dissipation Capacitance
Outputs disabled
Test Conditions
C
L
= 0pF, f = 10Mhz
Typical
88
12
V
CC
= 3.3V ± 0.3V
Typical
108
12
Unit
pF
pF
5
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