PERICOM PI74ALVCH16952

PI74ALVCH16952
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16-Bit Registered Transceiver
With 3-STATE Outputs
Product Features
Product Description
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Pericom Semiconductor’s PI74ALVCH series of logic circuits are
produced using the Company’s advanced 0.5 micron CMOS
technology, achieving industry leading speed.
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PI74ALVCH16952 is designed for low voltage operation
VCC = 2.3V to 3.6V
Hysteresis on all inputs
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:
– 48-pin 240 mil wide plastic TSSOP (A)
– 48-pin 300 mil wide plastic SSOP (V)
The PI74ALVCH16952 16-bit registered transceiver is designed for
2.3V to 3.6V VCC operation.
The product contains two sets of D-type flip-flops for temporary
storage of data flowing in either direction. The device can be used
as two 8-bit transceivers or one 16-bit tranceiver. Data on the A or
B bus is stored in the registers on the low-to-high transition of the
clock (CLKAB or CLKBA) input provided that the clock-enable
(CLKENAB or CLKENBA) input is low. Taking the output-enable
(OEAB or OEBA) input low accesses the data on either port.
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 capability
of the driver.
The PI74ALVCH16952 has “Bus Hold” which retains the data
input’s last state whenever the data input goes to high-impedance
preventing “floating” inputs and eliminating the need for pullup/
down resistors.
Logic Block Diagram
1CLKENAB
1CLKAB
1OEBA
3
54
2
55
56
1
1A1
1CLKBA
1OEAB
V
One of Eight
Channels
1CLKENBA
C1
CE
1D
5
52
1B1
V
C1
CE
1D
To Seven Other Channels
2CLKENAB
2CLKAB
2OEBA
26
31
27
30
29
28
2OEAB
C1
CE
1D
15
42
2B1
C1
CE
1D
V
2A1
2CLKBA
V
One of Eight
Channels
2CLKENBA
To Seven Other Channels
1
PS8197A
10/16/00
PI74ALVCH16952
16-Bit
Registered
Transceiver
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Product Pin Description
Pin Name
CLKEN
OE
CLK
Ax
Bx
GND
VCC
Truth Table(1)†
Description
Clock Enable Input (Active LOW)
Output Enable Input (Active LOW)
Clock Input (Active HIGH)
Data I/O
Data I/O
Ground
Power
Inputs
CLKENAB CLKAB
Product Pin Configuration
1OEAB
1CLKAB
1CLKENAB
GND
1A1
1A2
VCC
1A3
1A4
1
2
56
55
1OEBA
3
4
5
54
53
52
1CLKENBA
6
7
8
56-PIN 51
A-56 50
V-56
GND
1B1
1B2
VCC
49
1B3
48
47
1B4
11
12
13
46
45
44
GND
14
15
16
43
42
1B8
41
2B2
17
18
40
2B3
39
19
20
21
38
37
36
GND
2B4
2A8
22
23
24
35
34
33
GND
2CLKENAB
25
26
32
31
2CLKAB
27
28
30
29
1A5
GND
1A5
1A7
1A8
2A1
2A2
2A3
GND
2A4
2A5
2A6
VCC
2A7
2OEAB
A
H
X
L
X
B0‡
X
L
L
X
B0‡
L
­
L
L
L
L
­
L
H
H
X
X
H
X
Z
Note:
1. H = High Signal Level
L = Low Signal Level
Z = High Impedance
↑ = LOW-to-HIGH Transition
† A-to-B data flow is shown: B-to-A flow is similar but
uses OEBA, CLKBA, and CLKENBA.
‡ Output level of B before the indicated steady-state input
conditions were established.
CLKBA
9
10
OEAB
Output
B
1B5
1B6
1B7
2B1
2B5
2B6
VCC
2B7
2B8
GND
2CLKENBA
2CLKBA
2OEAB
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PS8197A
10/16/00
PI74ALVCH16952
16-Bit
Registered
Transceiver
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Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Storage Temperature ........................................................... –65°C to +150°C
Ambient Temperature with Power Applied ........................ –40°C to +85°C
Input Voltage Range, VIN ...................................................... –0.5V to VCC +0.5V
Output Voltage Range, VOUT ............................................... –0.5V to VCC +0.5V
DC Input Voltage .................................................................... –0.5V to +5.0V
DC Output Current ............................................................................. 100mA
Power Dissipation .................................................................................. 1.0W
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(1)
Parame te rs
De s cription
Te s t Conditions
M in.
M ax.
VCC
Supply Voltage
VIH
Input HIGH Voltage
VIL
Input LOW Voltage
VIN
Input Voltage
0
VCC
VOUT
Output Voltage
0
VCC
IOH
IOL
TA
High- level Output Current
Low- level Output Current
2.3
Typ.
VCC = 2.3V to 2.7V
1.7
VCC = 2.7V to 3.6V
2.0
3.6
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
Operating Free- Air Temperature
- 40
Units
85
V
mA
°C
Note:
1. Unused control inputs must be held HIGH or LOW to prevent them from floating.
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PS8197A
10/16/00
PI74ALVCH16952
16-Bit
Registered
Transceiver
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DC Electrical Characteristics (Over the Operating Range, TA = –40°C to +85°C, VCC = 3.3V ±10%)
Parame te rs
VCC(1)
M in.
Min. to Max.
VCC - 0.2
VIH = 1.7V
2.3V
2.0
VIH = 1.7V
2.3V
1.7
VIH = 2.0V
2.7V
2.2
VIH = 2.0V
3.0V
2.4
VIH = 2.0V
3.0V
2.0
Te s t Conditions
IOH = - 100 µA
IOH = - 6 MA
VOH
IOH = - 12 mA
IOH = - 24 mA
IOL = 100 µA
IOL = 6 mA
VOL
IOL = 12 mA
IOL = 24 mA
II
V
Min. to Max.
0.2
VIL = 0.7V
2.3V
0.4
VIL = 0.7V
2.3V
0.7
VIL = 0.8V
2.7V
0.4
VIL = 0.8V
3.0V
0.55
3.6V
±5
VI = VCC or GND
VI = 0.7V
2.3V
VI = 1.7V
II (Hold)(3)
Typ.(2) M ax. Units
VI = 0.8V
3.0V
VI = 2.0V
45
- 45
75
µA
- 75
VI = 0 to 3.6V
3.6V
±500
IOZ(4)
VO = VCC or GND
3.6V
±10
ICC
VI = VCC or GND
3.6V
40
3V to 3.6V
750
∆ICC
IO = 0
One input at VCC - 0.6V, Other inputs at VCC or GND
CI Control Inputs VI = VCC or GND
3.3V
3.5
CIO A or B ports VO = VCC or GND
3.3V
8.5
pF
Notes:
1. For Max. or Min. 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. Bus Hold maximum dynamic current required to switch the input from one state to another.
4. For I/O ports, the IOZ includes the input leakage current.
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PS8197A
10/16/00
PI74ALVCH16952
16-Bit
Registered
Transceiver
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Timing Requirements over Operating Range
Parame te rs
D e s cription
VCC = 2.5V ± 0.2V
VCC = 2.7V
VCC = 3.3V ± 0.3V
M in.
M ax.
M in.
M ax.
M in.
M ax.
0
150
0
150
0
150
fCLOCK
Clock frequency
tW Pulse
Duration
CLK EN high
3.3
3.3
3.3
CLK high or low
3.3
3.3
3.3
Data before CLK
1.7
1.9
1.5
CLK EN before CLK
1.2
1.0
1.0
Data after CLΚ
0.6
0.6
0.8
CLK EN after CLK
1.1
0.9
1.1
tSU Setup time
tH Hold time
∆t/∆v(1)
Input Transition Rise or Fall
0
10
0
10
Units
MHz
ns
0
10
ns/V
Notes:
1. See test circuit and waveforms.
Switching Characteristics Over Operating Range(1)
Parame te rs
From
(Input)
To
(Output)
fMAX
VCC = 2.5V ± 0.2V
M in.(2)
M ax.
150
tPD
CLK
tEN
O EBA or
O EAB
tDIS
O EBA or
O EAB
A or B
VCC = 2.7V
M in.(2)
VCC = 3.3V ± 0.V
M ax.
M in.(2)
150
1.0
M ax.
150
Units
MHz
4.1
4.6
1.0
3.9
5.4
5.3
1.0
4.4
5.3
4.4
1.1
4.0
ns
Notes:
1. See test circuit and waveforms.
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
VCC = 2.5V ± 0.2V
VCC = 3.3V ± 0.3V
Typical
53
71
34
40
Units
pF
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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PS8197A
10/16/00