IDT74ALVCHR162601
3.3V CMOS 18-BIT UNIVERSAL BUS TRANSCEIVER
EXTENDED COMMERCIAL TEMPERATURE RANGE
3.3V CMOS 18-BIT
IDT74ALVCHR162601
UNIVERSAL BUS
TRANSCEIVER 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 (0.4µ W typ. static)
– Rail-to-Rail output swing for increased noise margin
Drive Features for ALVCHR162601:
– Balanced Output Drivers: ±12mA
– Low switching noise
–
–
–
CMOS technology. The transceiver 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. The clock can be controlled by the clock-enable (CLKENAB and
CLKENBA)
inputs. For A-to-B data flow, the device operates in the
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 data
is stored in the latch/flip-flop on the low-to-high transition of CLKAB. Output
enable
OEAB
is active low. When
OEAB
is low, the outputs are active. When
OEAB
is high, the outputs are in the high-impedance state.
Data flow for B to A is similar to that of A to B but uses
OEBA,
LEBA, CLKBA
and
CLKENBA.
The ALVCHR162601 has series resistors in the device output structure
which will significantly reduce line noise when used with light loads. This
driver has been designed to drive
±
12mA at the designated threshold
levels.
The ALVCHR162601 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.
APPLICATIONS:
• 3.3V High Speed Systems
• 3.3V and lower voltage computing systems
DESCRIPTION:
This 18-bit universal bus transceiver is built using advanced dual metal
Functional Block Diagram
OEAB
CLKENAB
1
56
CLKAB
LEAB
LEBA
CLKBA
CLKENBA
OEBA
55
2
28
30
29
27
CE
A
1
3
1D
C1
CLK
54
B
1
CE
1D
C1
CLK
TO 17 OTHER CHANNELS
EXTENDED COMMERCIAL TEMPERATURE RANGE
1
c
1999 Integrated Device Technology, Inc.
MARCH 1999
DSC-4491/1
IDT74ALVCHR162601
3.3V CMOS 18-BIT UNIVERSAL BUS TRANSCEIVER
EXTENDED COMMERCIAL TEMPERATURE RANGE
PIN CONFIGURATION
OEAB
LEAB
A
1
GND
A
2
A
3
V
CC
A
4
A
5
A
6
GND
A
7
A
8
A
9
A
10
A
11
A
12
GND
A
13
A
14
A
15
V
CC
A
16
A
17
GND
A
18
OEBA
LEBA
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
CLKENAB
CLKAB
B
1
GND
B
2
B
3
V
CC
B
4
B
5
B
6
GND
B
7
B
8
B
9
B
10
B
11
B
12
GND
B
13
B
14
B
15
V
CC
B
16
B
17
GND
B
18
CLKBA
CLKENBA
ABSOLUTE MAXIMUM RATING
Symbol
V
TERM(2)
56
55
54
53
52
51
50
49
48
47
46
45
(1)
Unit
V
V
°C
mA
mA
mA
mA
NEW16link
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
Max.
– 0.5 to + 4.6
– 0.5 to
V
CC
+ 0.5
– 65 to + 150
– 50 to + 50
± 50
– 50
±100
SO56-1 44
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
NOTE:
1. As applicable to the device type.
FUNCTION TABLE
(1,2)
CLKENAB
X
X
X
H
L
L
L
OEAB
H
L
L
L
L
L
L
Inputs
LEAB
X
H
H
L
L
L
L
CLKAB
X
X
X
X
↑
↑
L or H
Ax
X
L
H
X
L
H
X
Outputs
Bx
Z
L
H
B
0
L
H
B
0
SSOP/
TSSOP/TVSOP
TOP VIEW
NOTES:
1. A-to-B data flow is shown. B-to-A data flow is similar but uses
OEBA,
LEBA, CLKBA and
CLKENBA.
2. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care
Z = High-Impedance
↑
= LOW-to-HIGH Transition
B
0
= Output level before the indicated steady-state input conditions
were established.
2
IDT74ALVCHR162601
3.3V CMOS 18-BIT UNIVERSAL BUS TRANSCEIVER
EXTENDED COMMERCIAL TEMPERATURE RANGE
PIN DESCRIPTION
Pin Names
OEAB
OEBA
LEAB
LEBA
CLKAB
CLKBA
Ax
Bx
Description
A-to-B Output Enable Inputs (Active LOW)
B-to-A Output Enable Inputs (Active LOW)
A-to-B Latch Enable Inputs
B-to-A Latch Enable Inputs
A-to-B Clock Inputs
B-to-A Clock Inputs
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)
A-to-B Clock Enable Inputs (Active LOW)
B-to-A Clock Enable Inputs (Active LOW)
CLKENAB
CLKENBA
NOTE:
1. These pins have “Bus-Hold.” All other pins are standard inputs,
outputs, or I/Os.
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
NOTES:
1. Pins with Bus-hold are identified in the pin description.
2. Typical values are at V
CC
= 3.3V, +25°C ambient.
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
3
IDT74ALVCHR162601
3.3V CMOS 18-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
= – 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
Outputs enabled
Power Dissipation Capacitance
Outputs disabled
Test Conditions
C
L
= 0pF, f = 10Mhz
Typical
56
12
V
CC
= 3.3V ± 0.3V
Typical
63
13
Unit
pF
pF
4
IDT74ALVCHR162601
3.3V CMOS 18-BIT UNIVERSAL BUS TRANSCEIVER
EXTENDED COMMERCIAL TEMPERATURE RANGE
SWITCHING CHARACTERISTICS
(1)
V
CC
= 2.5V ± 0.2V
Symbol
f
MAX
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
SU
t
SU
t
SU
t
SU
t
H
t
H
t
H
t
H
t
W
t
W
t
SK
(o)
Propagation Delay
Ax to Bx or Bx to Ax
Propagation Delay
LEAB to Bx or LEBA to Ax
Propagation Delay
CLKAB to Bx or CLKBA to Ax
Output Enable Time
OEAB
to Bx or
OEBA
to Ax
Output Disable Time
OEAB
to Bx or
OEBA
to Ax
Setup Time, data before CLK↑
Setup Time, data before LE↓, CLK HIGH
Setup Time, data before LE↓, CLK LOW
Setup Time,
CLKEN
before CLK↑
Hold Time, data after CLK↑
Hold Time, data after LE↓, CLK HIGH
Hold Time, data after LE↓, CLK LOW
Hold Time,
CLKEN
after CLK↑
Pulse Width, LE HIGH
Pulse Width, CLK HIGH or LOW
Output Skew
(2)
Parameter
Min.
150
1
1
1.2
1.1
1
2.3
2
1.3
2
0.7
1.3
1.7
0.3
3.3
3.3
—
Max.
—
4.8
5.5
5.9
6.3
4.2
—
—
—
—
—
—
—
—
—
—
—
V
CC
= 2.7V
Min.
150
—
—
—
—
—
2.4
1.6
1.2
2
0.7
1.6
2
0.5
3.3
3.3
—
Max.
—
5.1
5.8
6.3
6.6
5.1
—
—
—
—
—
—
—
—
—
—
—
V
CC
= 3.3V ± 0.3V
Min.
150
1
1
1.4
1.1
1.6
2.1
1.6
1.1
1.7
0.8
1.4
1.7
0.6
3.3
3.3
—
Max.
—
4.4
5.1
5.4
5.6
4.7
—
—
—
—
—
—
—
—
—
—
500
Unit
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ps
NOTES:
1. See test circuits and waveforms. T
A
= – 40°C to + 85°C.
2. Skew between any two outputs of the same package and switching in the same direction.
5
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