PERICOM PI74ALVCH32245

PI74ALVCH32245
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3.3V, 32-Bit Bidirectional Transceiver
with 3-State Outputs
Product Features
Product Description
• PI74ALVCH32245 is designed for low voltage operation
• VCC = 2.3V to 3.6V
• Typical VOLP (Output Ground Bounce)
< 0.8V at VCC = 3.3V, TA = 25°C
• Typical VOHV (Output VOH Undershoot)
> 2.0V at VCC = 3.3V, TA = 25°C
• Bus Hold retains last active bus state during 3-State,
eliminating the need for external pullup resistors
• Industrial operation at –40°C to +85°C
• Packages available:
– 96-ball, 13.5mm x 5.5mm x 1.4mm low profile fine
pitch ball grid array, LFBGA (NB)
Pericom Semiconductor’s PI74ALVCH series of logic circuits are
produced using the Company’s advanced 0.5 micron CMOS
technology, achieving industry leading speed grades.
The PI74ALVCH32245 is a 32-bit bidirectional transceiver
designed for asynchronous two-way communication between
data buses. The direction control input pin (xDIR) determines
the direction of data flow through the bidirectional transceiver.
The Direction and Output Enable controls are designed to operate
this device as either four independent 8-bit transceivers, two 16-Bit
transceivers, or one 32-Bit transceiver. The output enable (OE)
input, when HIGH, disables both A and B ports by placing them in
HIGH Z condition.
To ensure the high-impedance state during power up or power
down, OE should be tied to VCC through a pull-up resistor; the
minimum value of the resistor is determined by the current sinking
ability of the driver.
Active bus-hold circuitry is provided to hold unused or floating
data inputs at a valid logic level.
Logic Block Diagram (Positive Logic)
1DIR A3
2DIR H3
A4 1OE
1A1
H4 2OE
A5
2A1 E5
A2
E2
1B1
To Seven Other Channels
2B1
To Seven Other Channels
3DIR J3
4DIR T3
J4 3OE
T4 4OE
3A1 J5
4A1 N5
J2
N2
3B1
To Seven Other Channels
4B1
To Seven Other Channels
1
PS8437
08/24/01
PI74ALVCH32245
3.3V, 32-Bit Bidirectional Tranceiver
with 3-State Outputs
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Product Pin Description
Pin Name
xOE
xDIR
xAx
xBx
GND
VCC
Truth Table(1)
Description
3-State Output Enable Inputs (Active LOW)
Direction Control Input
Side A Inputs or 3-State Inputs
Side B Outputs or 3-State Outputs
Ground
Power
Inputs ( 1 )
Outputs ( 1 )
xOE
xDIR
L
L
Bus B Data to Bus A
L
H
Bus A Data to Bus B
H
X
Z
Notes:
1. H = High Voltage Level
L = Low Voltage Level
X = Don’t Care
Z = High Impedance
NB Package (Top View)
6
5
4
3
2
1
A B C D E F G H J K L MN P R T
Terminal Assignments
6
1A2
1A4
1A6
1A8
2A2
2A4
2A6
2A7
3A2
3A4
3A6
3A8
4A2
4A4
4A6
4A7
5
1A1
1A3
1A5
1A7
2A1
2A3
2A5
2A8
3A1
3A3
3A5
3A7
4A1
4A3
4A5
4A8
4
1OE
GND
V CC
GND
GND
V CC
GND
2OE
3OE
GND
V CC
GND
GND
V CC
GND
4OE
3
1DIR
GND
V CC
GND
GND
V CC
GND
2DIR
3DIR
GND
V CC
GND
GND
V CC
GND
4DIR
2
1B1
1B3
1B5
1B7
2B1
2B3
2B5
2B8
3B1
3B3
3B5
3B7
4B1
4B3
4B5
4B8
1
1B2
1B4
1B6
1B8
2B2
2B4
2B6
2B7
3B2
3B4
3B6
3B8
4B2
4B4
4B6
4B7
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
T
2
PS8437
08/24/01
PI74ALVCH32245
3.3V, 32-Bit Bidirectional Tranceiver
with 3-State Outputs
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Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Supply Voltage Range,VCC ............................................................... –0.5V to 4.6V
Input Voltage Range, VI: Except I/O ports (1) .............................. –0.5V to 4.6V
I/O ports (1,2) ........................... –0.5V to VCC + 0.5V
Output Voltage Range, VO (1,2) ............................................ –0.5V to VCC +0.5V
Input Clamp Current, IIK (VI <0) ........................................................ –50mA
Output Clamp Current, IOK (VO <0) .................................................. –50mA
Continuous Output Current, IO ................................................................... ±50mA
Continuous Current through each VCC or GND ............................... ±100mA
Package Thermal Impedance, θJA(3) ............................................................. 40ºC/W
Storage Temperature Range, TSTG ............................................... –65ºC to 150ºC
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.
Note:
1. The input negative voltage and output voltage ratings may be exceeded
if the input and output current ratings are observed.
2. This value is limited to 4.6V maximum.
3. The package thermal impedance is calculated in accordance with JESD 51.
Recommended Operating Conditions(1)
Parame te rs
D e s cription
VCC
Supply Voltage
VIH
Input HIGH Voltage
VIL
Input LO W Voltage
VIN
Input Voltage
0
VCC
VOUT
O utput Voltage
0
VCC
IOH
O utput
HIGH
Current
IOL
O utput
LO W
Current
Te s t Conditions
M in.
2.3
VCC = 2.3V to 2.7V
1.7
VCC = 2.7V to 3.6V
2.0
Typ.
M ax.
Units
3.6
V
VCC = 2.3V to 2.7V
0.7
VCC = 2.7V to 3.6V
0.8
VCC = 2.3V
–12
VCC = 2.7V
–12
VCC = 3.0V
–24
VCC = 2.3V
12
VCC = 2.7V
12
VCC = 3.0V
24
mA
∆t/∆V
Input Transition Rise or Fall Rate
0
10
ns/V
TA
O perating Free- Air Temperature
–40
85
°C
Note 1: All unused inputs must be held at VCC or GND to ensure proper device operation
3
PS8437
08/24/01
PI74ALVCH32245
3.3V, 32-Bit Bidirectional Tranceiver
with 3-State Outputs
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DC Electrical Characteristics (Over the Operating Range, TA = –40°C to +85°C, VCC = 3.3V ±10%)
Te s t Conditions (1)
Parame te rs D e s cription
VOH
VOL
IIN
IIN (HOLD)
O utput HIGH Voltage
O utput LO W Voltage
Input Current
Input Hold
Current
M in.
IOH = - 100µA, VCC = Min. to Max.
VCC- 0.2
VIH = 1.7V, IOH = - 6mA, VCC = 2.3V
2.0
VIH = 1.7V, IOH = - 12mA, VCC = 2.3V
1.7
VIH = 2.0V, IOH = - 12mA, VCC = 2.7V
2.2
VIH = 2.0V, IOH = - 12mA, VCC =3.0V
2.4
VIH = 2.0V, IOH = - 24mA, VCC =3.0V
2.0
Typ.(2)
M ax.
V
IOL = - 100µA, VIL = Min. to Max.
0.2
VIL = 0.7V, IOL = 6mA, VCC = 2.3V
0.4
VIL = 0.7V, IOL = 12mA, VCC = 2.3V
0.7
VIL = 0.8V, IOL = 12mA, VCC = 2.7V
0.4
VIL = 0.8V, IOL = 24mA, VCC =3.0V
0.55
VIN = VCC or GND, VCC = 3.6V
±5
VIN = 0.7V, VCC = 2.3V
45
VIN = 1.7V, VCC = 2.3V
–45
VIN = 0.8V, VCC = 3.0V
75
VIN = 2.0V, VCC = 3.0V
–75
Units
VIN = 0 to 3.6V, VCC = 3.6V(3)
±500
IOZ
O utput Current (3- State O utputs)
VOUT = VCC or GND, VCC = 3.6V
±10
ICC
Supply Current
VCC = 3.6V, IOUT = 0µA,
VIN = GND or VCC
40
∆ICC
Supply Current per Input
@ TTL HIGH
VCC = 3.0V to 3.6V
O ne Input at VCC - 0.6V
O ther Inputs at VCC or GND
750
CI
Control Inputs
VIN = VCC or GND, VCC = 3.3V
4
CIO
A or B Ports
VO = VCC or GND, VCC = 3.3V
8
µA
pF
Notes:
1. For Min. or Max conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at VCC = 3.3V, +25°C ambient and maximum loading.
3. This is the bushold maximum dynamic current. It is the mimum overdrive current necessary to switch the input from one
state to another.
4
PS8437
08/24/01
PI74ALVCH32245
3.3V, 32-Bit Bidirectional Tranceiver
with 3-State Outputs
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Switching Characteristics over Operating Range(1)
Parame te rs
From (INPUT)
To (OUTPUT)
tPD
A or B
tEN
tDIS
VCC = 2.5V ± 0.2V
M in.(2)
M ax.
B or A
1.0
OE
B or A
OE
B or A
VCC = 2.7V
M in.(2)
VCC = 3.3V ± 0.3V
M ax.
M in.(2)
M ax.
3.7
3.6
1.0
3.0
1.0
5.7
5.4
1.0
4.4
1.5
5.2
4.6
1.0
4.1
Units
ns
Notes:
1. See test circuit and waveforms, Figures 1 and 2.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
Operating Characteristics, TA = 25ºC
Parame te r
CPD Power Dissipation
Capacitance
Te s t Conditions
Outputs Enabled
Outputs Disabled
CL = 50pF,
f = 10 MHz
5
VCC = 2.5V ± 0.2V
VCC = 3.3V ± 0.3V
Typical
44
58
8
10
Units
pF
PS8437
08/24/01
PI74ALVCH32245
3.3V, 32-Bit Bidirectional Tranceiver
with 3-State Outputs
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PARAMETER MEASUREMENT INFORMATION
VCC = 2.5V ±0.2V
2 x VCC
S1
500Ω
From Output
Under Test
CL = 30pF
Open
GND
500Ω
(See Note A)
Te s t
S1
tpd
tPLZ/tPZH
tPHZ/tPZH
O pen
2 x VCC
GND
Load Circuit
VCC
Timing
Input
tW
VCC/2
VCC
0V
tsu
VCC/2
Input
th
VCC/2
0V
VCC
Data
Input
VCC/2
Voltage Waveforms
Pulse Duration
VCC/2
0V
Voltage Waveforms
Setup and Hold Times
Output
Control
(Low Level
Enabling)
VCC
Input
VCC/2
VCC/2
tPLH
tPHL
VOH
Output
VCC/2
Output
Waveform 2
S1 at GND
(see Note B)
VCC/2
VOL
Voltage Waveforms
Propagation Delay Times
VCC/2
0V
tPZL
Output
Waveform 1
S1 at 2 x VCC
(see Note B) t
PZH
0V
VCC /2
VCC
tPLZ
VCC
VCC/2
VOL +0.15V
VOL
tPHZ
VCC/2
VOH –0.15V
VOH
0V
Voltage Waveforms
Enable and Disable Times
Figure 1. Load Circuit and Voltage Waveforms
Notes:
A. CL includes probe and jig capacitance.
B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
C. All input impulses are supplied by generators having the following characteristics: PRR ≤ MHz, ZO = 50Ω, tR ≤ 2.0ns, tF ≤ 2.0ns.
D. The outputs are measured one at a time with one transition per measurement.
E. tPLZ and tPHZ are the same as tdis
F. tPZL and tPZH are the same as ten
G. tPLH and tPHL are the same as tpd
6
PS8437
08/24/01
PI74ALVCH32245
3.3V, 32-Bit Bidirectional Tranceiver
with 3-State Outputs
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PARAMETER MEASUREMENT INFORMATION
VCC = 2.7V and 3.3V ±0.3V
6V
S1
500Ω
From Output
Under Test
CL = 50pF
Open
GND
500Ω
(See Note A)
Te s t
S1
tpd
tPLZ/tPZH
tPHZ/tPZH
O pen
6V
GND
Load Circuit
2.7V
Timing
Input
tW
1.5V
2.7V
0V
tsu
1.5V
Input
0V
th
Voltage Waveforms
Pulse Duration
2.7V
Data
Input
1.5V
1.5V
1.5V
0V
Voltage Waveforms
Setup and Hold Times
Output
Control
(Low Level
Enabling)
Input
0V
tPHL
tPLH
Output
Waveform 2
S1 at GND
(see Note B)
VOH
Output
1.5V
1.5V
1.5V
VOL
Voltage Waveforms
Propagation Delay Times
1.5V
0V
tPZL
Output
Waveform 1
S1 at 6V
(see Note B) t
PZH
2.7V
1.5V
1.5V
2.7V
tPLZ
3V
1.5V
VOL +0.3V
VOL
tPHZ
1.5V
VOH –0.3V
VOH
0V
Voltage Waveforms
Enable and Disable Times
Figure 2. Load Circuit and Voltage Waveforms
Notes:
A. CL includes probe and jig capacitance.
B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
C. All input impulses are supplied by generators having the following characteristics: PRR ≤ MHz, ZO = 50Ω, tR ≤ 2.5ns, tF ≤ 2.5ns.
D. The outputs are measured one at a time with one transition per measurement.
E. tPLZ and tPHZ are the same as tdis
F. tPZL and tPZH are the same as ten
G. tPLH and tPHL are the same as tpd
Pericom Semiconductor Corporation
2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com
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PS8437
08/24/01