21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74AVC164245LA
16-Bit 1.5-2.5V to 3.3V Level Shifting
Transceiver with 3-State Outputs
Features
• PI74AVC164245LA is designed for low voltage operation:
1.5V - 2.5V to 3.3V
• Industrial operation at –40°C to +85°C
• Packag (Pb-free & Green available):
– 48-pin plastic 240-mil TSSOP (A)
– 48-pin plastic 173-mil TVSOP (K)
Description
Pericom Semiconductor’s PI74AVC164245LA, a 16-bit (dual-octal)
noninverting bus transceiver, contains two separate supply rails:
B port (V
CCB
), set at 3.3V, and A port (V
CCA
), set to operate
at 1.5-2.5V. This arrangement permits translation from a 1.5-2.5V to
3.3V environment and vice versa. The control pins, OE and DIR are
controlled by V
CCB
.
The PI74AVC164245LA is designed for asynchronous
communication between data buses.
To ensure the high impedance state during power up or power
down, the output-enable (OE) input should be tied to V
CC
through
a pullup resistor: the minimum value of the resistor is determined by
the current-sinking capability of the driver.
Truth Table
(each 8-bit section)
Inputs
Ope ration
OE
L
L
H
DIR
L
H
X
B data to A bus
A data to B bus
Isolation
Block Diagram
Pin Configuration
(LVTTL)1DIR
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
1OE(LVTTL)
1A1
1A2
GND
1A3
1A4
VCCA(1.5V-2.5V)
1A5
1A6
GND
1A7
1A8
2A1
2A2
GND
2A3
2A4
VCCA(1.5V-2.5V)
2A5
2A6
GND
2A7
2A8
2OE(LVTTL)
1DIR
1
48
1OE
1B1
1B2
GND
1B3
1B4
(3.3V)VCCB
1B5
1A1
47
2
To Seven Other Channels
1B1
1B6
GND
1B7
1B8
2B1
2B2
GND
2B3
2B4
(3.3V)VCCB
2B5
2DIR 24
25
2A1
36
13
To Seven Other Channels
2OE
48-Pin
36
A, K
35
34
33
32
31
30
29
28
27
26
25
2B1
2B6
GND
2B7
2B8
(LVTTL)2DIR
08-0291
1
PS8600C
11/06/08
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74AVC164245LA
16-Bit 1.5-2.5V to 3.3V Level Shifting
Transceiver with 3-State Outputs
Maximum Ratings
(Absolute maximum ratings over operating free-air temperature range from V
CCB
at 3.3V & V
CCA
at 1.5 - 2.5V, unless otherwise noted)
Supply voltage range:
V
CCA ..................................
–0.5V to 3.8V
V
CCB ..................................
–0.5V to 4.6V
Input Voltage Range, V
I
Except I/O ports
(1)
......–0.5V to 4.6V
I/O port A
(2)
... –0.5V to V
CCA
+0.5V
I/O port B
(1)
.... –0.5V to V
CCB
+0.5V
Input clamp current, I
IK
(V
I
<0) .................................... –50mA
Output clamp current, I
OK
(V
O
<0) .............................. –50mA
Continuous output current, I
O ...............................................
±50mA
Continuous current through each V
CC
or GND ...........±100mA
Package thermal impedance, 0
JA(3)
: A package .......... 89°C/W
K package ............................ 58°C/W
V package ............................ 94°C/W
Storage temperature range, T
STG ...........................
–65°C to 150°C
Note:
Stresses greater than those listed under 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.
Recommended Operating Conditions for V
CCB
at 3.3V
(4)
M in.
V
CCB
(1)
V
IH
V
IL
V
IA
V
OB
I
OH
I
OL
Δ
t/
Δv
T
A
Supply voltage
High- level voltage
Low- level voltage
Input Voltage
Output Voltage
High- level output current
Low- level output current
Input transition rise or fall rate
Operating free- air temperature
–40
0
0
3.0
2
0. 8
V
CCB
V
CCB
–12
12
10
85
mA
ns/V
°C
V
M ax.
3. 6
Units
Recommended Operating Conditions for V
CCA
at 2.5V
(4)
M in.
V
CCA
(2)
V
IH
V
IL
V
IB
V
OA
I
OH
I
OL
Δ
t/
Δv
T
A
Supply voltage
High- level voltage
Low- level voltage
Input voltage
Output voltage
High- level output current
Low- level output current
Input transition rise or fall rate
Operating free- air temperature
–40
V
CCA
= 2.3V
V
CCA
= 2.7V
V
CCA
= 2.3V
V
CCA
= 2.7V
V
CCA
= 2.3V to 2.7V
V
CCA
= 2.3V to 2.7V
0
0
2 .3
1.7
0 .7
V
CCA
V
CCA
–8
–12
8
12
10
85
ns/V
°C
mA
V
M ax.
2.7
Units
Notes:
1. This value is limited to 4.6V maximum.
2. This value is limited to 3.8V maximum.
3. The package thermal impedance is calculated in accordance with JESD 51.
4. To ensure proper device operation, all unused device inputs must be held at the associated V
CC
or GND.
08-0291
2
PS8600C
11/06/08
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74AVC164245LA
16-Bit 1.5-2.5V to 3.3V Level Shifting
Transceiver with 3-State Outputs
Recommended Operating Conditions for V
CCA
at 1.5V
(2)
M in.
V
CCA
(1)
V
IH
V
IL
V
IB
V
OA
I
OH
I
OL
Δ
t/
Δv
T
A
Supply voltage
High- level voltage
Low- level voltage
Input voltage
Output voltage
High- level output current
Low- level output current
Input transition rise or fall rate
Operating free- air temperature
–40
V
CCA
= 1.4V
V
CCA
= 1.6V
V
CCA
= 1.4V
V
CCA
= 1.6V
V
CCA
= 1.4V to 1.6V
V
CCA
= 1.4V to 1.6V
0
0
1.4
0.65 x V
CCA
0.35 x V
CCA
V
CCA
V
CCA
–2
–6
2
6
10
85
ns/V
°C
mA
V
M ax.
1. 6
Units
Electrical Characteristics (V
CCB
)
(Over recommended operating free-air temperature range for V
CCB
= 3.3V)
Parame te rs
I
OH
= –100
μA
V
OH
(A to B)
I
OH
= –12mA
Te s t Conditions
V
CCB
3.0V
3.6V
3.0V
3.6V
3.0V
3.6V
3.0V
I
OL
= 12mA
I
I
I
OZ
(4)
I
CC
ΔI
CC
(5)
C
I
C
IO
Control Inputs V
I
= V
CCB
or GND
A or B ports
V
O
= V
CCB
or GND
V
I
= V
CCB
or GND, I
O
= 0
One input at V
CCB
–0.6V, Other inputs at V
CCB
or GND
Control Inputs V
I
= V
CCB
or GND
A or B ports
V
O
= V
CCB
or GND
3.6V
3 . 6V
3 . 6V
3.6V
3.0V to 3.6V
3 . 3V
3 . 3V
4. 5
pF
6.5
M in.
2. 8
3. 4
2.2
2.8
V
I
OL
= 100
μA
V
OL
(A to B)
0.2
0.2
0.5
0.5
±5
±10
20
500
μA
Typ
(3)
M ax.
Units
Notes:
1. Value limited to 4.6V maximum..
2.To ensure proper device operation, all unused device inputs must be held at the associated V
CC
or GND.
3. Typical values are measured at V
CC
= 3.3V, T
A
= 25°C
4. For I/O ports, the parameter I
OZ
includes the input leakage current.
5. This is the increase in supply current for each input that is at one of the specified TTL voltage levels rather than at 0 or the associated V
CC
.
08-0291
3
PS8600C
11/06/08
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74AVC164245LA
16-Bit 1.5-2.5V to 3.3V Level Shifting
Transceiver with 3-State Outputs
Electrical Characteristics (V
CCA
)
(Over recommended operating free-air temperature range for V
CCA
= 2.5V)
Parame te rs
I
OH
= –100
μA
V
OH
(B to A)
I
OH
= –8mA
I
OH
= –12mA
I
OL
= 100
μA
V
OL
(B to A)
I
OL
= 8mA
I
OL
= 12mA
I
I
I
OZ
(3)
I
CC
ΔI
CC
(1)
C
I
C
IO
Control Inputs V
I
= V
CCA
or GND
A or B ports
V
O
= V
CCA
or GND
V
I
= V
CCA
or GND, I
O
= 0
One input at V
CCA
–0.6V, Other inputs at V
CCA
or GND
Control Inputs V
I
= V
CCA
or GND
A or B ports
V
O
= V
CCA
or GND
Te s t Conditions
V
CCA
2.3V to 2.7V
2.3V
2.7V
2.7 V
2.3V to 2.7V
2.3 V
2.7 V
2.7V
2.7V
2.7 V
2.3V to 2.7V
2.5V
2.5V
4.5
pF
6. 5
M in.
V
CC
- 0.1
1.7
2. 0
1.8
0.2
0 .4
0 .5
±5
±10
30
500
μA
V
Typ.
(2)
M a x.
Units
Electrical Characteristics (V
CCA
)
(Over recommended operating free-air temperature range for V
CCA
= 1.5V)
Parame te rs
I
OH
= –100
μA
V
OH
(B to A)
I
OH
= –2mA
I
OH
= –6mA
I
OL
= 100
μA
V
OL
(B to A)
I
OL
= 2mA
I
OL
= 6mA
I
OZ
(3)
I
CC
ΔI
CC
(1)
C
I
C
IO
Control Inputs
A or B ports
A or B ports
V
O
= V
CCA
or GND
V
I
= V
CCA
or GND, I
O
= 0
One input at V
CCA
–0.6V, Other inputs at V
CCA
or GND
V
I
= V
CCA
or GND
V
O
= V
CCA
or GND
Te s t Conditions
V
CCA
1.4V to 1.6V
1.4V
1.6V
1.6V
1.4V
1.6V
1.6V
1.6V
1.6V
1.4V to 1.6V
1.5V
1.5V
4.5
pF
6 .5
M in.
V
CC
–0.1
1.1
1.3
1.1
0.2
0.3
0.4
±5
± 20
30 0
μΑ
V
Typ.
(2)
M ax.
Units
Notes:
1. The increase in supply current for each input at one of the specified TTL voltage levels rather than at the associated V
CC
.
2. Typical values are measured at V
CC
= 2.5V or 1.5V, T
A
= 25°C
3. For I/O ports, the parameter I
OZ
includes the input leakage current.
08-0291
4
PS8600C
11/06/08
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74AVC164245LA
16-Bit 1.5-2.5V to 3.3V Level Shifting
Transceiver with 3-State Outputs
Switching Characteristics
(Over recommended operating free-air temperature range, C
L
= 30pF (unless otherwise noted), see Figures 1, 2, 3
PI74AVC164245LA
V
CCB
= 3.3V ±0.3V
From
(Input)
A
t
P D
t
EN
t
DIS
t
EN
t
DIS
t
sk(o)(1)
t
sk(b)(1)
B
OE
OE
OE
OE
To
(Output)
B
A
B
B
A
A
V
CCA
= 1.5V
± 0.10V
M in.
M a x.
V
CCA
= 2.5V
± 0.2V
M in.
1.0
1.0
1.2
1.0
1.2
1.5
M a x.
3 .0
2 .8
3 .5
3 .5
3 .5
3 .5
0.3
0.25
ns
Units
Parame te r
1.0
1.0
1.7
1.5
1.7
2.0
3.5
3.5
4.5
4.5
4.5
4.5
Note:
1. This is the skew between any two outputs of the same package, and switching in the same direction. For tsk
(o)
, Output 1 and Output 2 are any
two outputs. For tsk
(b)
, Output 1 and Output 2 are in the same bank.
These parameters are warrented but not production tested.
Operating Characteristics, T
A
= 25°C
Te s t
Conditions
Outputs Enabled (A or B)
C
L
= 30pF,
F = 10 MHz
V
CCA
= 2.5V
V
CCB
= 3.3V
Typical
56
6
Units
pF
Parame te rs
C
PD
Power Dissipation Capacitance
08-0291
5
PS8600C
11/06/08
