ETC PI74LPT162Q952CV

PI74LPT162Q952
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Fast CMOS 3.3V
16-Bit Registered Transceivers
Product Features
Product Description
• Compatible with LCX™ and LVT™ families of products
• Supports 5V Tolerant Mixed Signal Mode Operation
– Input can be 3V or 5V
– Output can be 3V or connected to 5V bus
• Advanced Low Power CMOS Operation
• Excellent output drive capability:
Balanced drives (12mA sink and source)
• 25-Ohm Series resistor on outputs to reduce
overshoot and undershoot
• Pin compatible with industry standard
double-density pinouts
• Low ground bounce outputs
• Hysteresis on all inputs
• Industrial operating temperature range: –40°C to +85°C
• Multiple center pins and distributed Vcc/GND pins
minimize switching noise
• Packages available:
– 56-pin 240 mil wide plastic TSSOP (A)
– 56-pin 300 mil wide plastic SSOP (V)
Pericom Semiconductor’s PI74LPT series of logic circuits are
produced in the Company’s advanced 0.6 micron CMOS technology,
achieving industry leading speed grades.
The PI74LPT162Q952 has 16-bit registered transceivers organized
with two sets of eight D-type latches with separate input and output
controls for each set. For data flow from A to B, for example, the
A-to-B Enable (xCEAB) input must be LOW to enter data from xAx.
The data present on the A port will be clocked on the B register when
xCLKAB toggles from LOW-to-HIGH. The xOEAB control performs
the output enable function on the B port. Control of data from B to
A is similar, but uses the xCEAB, xCLKAB, and xOEAB inputs. By
connecting the control pins of the two independent transceivers
together, a full 16-bit operation can be achieved. The output buffers
are designed with a Power-Off disable allowing “live insertion” of
boards when used as backplane drivers.
The PI74LPT162Q952 can be driven from either 3.3V or 5.0V devices
allowing this device to be used as a translator in a mixed
3.3/5.0V system.
Logic Block Diagram
1OEBA
2OEBA
1CEBA
2CEBA
1CLKBA
2CLKBA
1OEAB
2OEAB
1CEAB
2CEAB
1CLKAB
2CLKAB
C
C
1A0
2A0
D
1B0
2B0
D
C
C
D
D
TO 7 OTHER CHANNELS
TO 7 OTHER CHANNELS
1
PS8098A
02/25/97
PI74LPT162Q952
3.3V
16-Bit
Registered
Transceivers
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Product Pin Description
Pin Name
Truth Table(1,2)
Description
Inputs
Outputs
xOEAB
A-to-B Output Enable Input (Active LOW)
xCEA B
xCLKA B
xOEA B
xAx
xBx
XOEBA
B-to-A Output Enable Input (Active LOW)
H
X
L
X
B(3)
XCEAB
A-to-B Clock Enable Input (Active LOW)
X
L
L
X
B(3)
xCEBA
B-to-A Clock Enable Input (Active LOW)
L
↑
L
L
L
XCLKAB
A-to-B Clock Input
L
↑
L
H
H
XCLKBA
B-to-A Clock Input
X
X
H
X
High-Z
XAX
A-to-B Data Inputs or B-to-A 3-State Outputs
XBX
B-to-A Data Inputs or B-to-A 3-State Outputs
GND
Ground
VCC
Power
Notes:
1. H = High Voltage Level
L = Low Voltage Level
X = Don’t Care or Irrelevant
↑ = LOW-to-HIGH Transition
Z = High Impedance
2. A-to-B data flow shown. B-to-A flow control
is the same, except using xCEBA, xCLKBA,
and xOEBA.
3. Level of B before the indicated steady-state
input conditions were established.
Product Pin Configuration
1OEAB
1CLKAB
1CEAB
GND
1A0
1A1
VCC
1A2
1A3
1A4
GND
1A5
1A6
1A7
2A0
2A1
2A2
GND
2A3
2A4
2A5
VCC
2A6
2A7
GND
2CEAB
2CLKAB
2OEAB
1
56
2
55
3
54
4
53
5
52
6
51
7
50
8
49
9
48
10
47
11 56-Pin 46
12 A,V 45
13
44
14
43
15
42
16
41
17
40
18
39
19
38
20
37
21
36
22
35
23
34
24
33
25
32
26
31
27
30
28
29
1OEBA
1CLKBA
1CEBA
GND
1B0
1B1
VCC
1B2
1B3
1B4
GND
1B5
1B6
1B7
2B0
2B1
2B2
GND
2B3
2B4
2B5
VCC
2B6
2B7
GND
2CEBA
2CLKBA
2OEBA
2
PS8098A
02/25/97
PI74LPT162Q952
3.3V
16-Bit
Registered
Transceivers
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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
Supply Voltage to Ground Potential (Inputs & Vcc Only) ......... –0.5V to +7.0V
Supply Voltage to Ground Potential (Outputs & D/O Only) ...... –0.5V to +7.0V
DC Input Voltage .......................................................................–0.5V to +7.0V
DC Output Current ................................................................................ 120 mA
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.
DC Electrical Characteristics (Over the Operating Range, TA = –40°C to +85°C, VCC = 2.7V to 3.6V)
Parameters
Description
IOZH
IOZL
VIK
IODH
IODL
VOH
Input HIGH Voltage (Input pins)
Input HIGH Voltage (I/O pins)
Input LOW Voltage
(Input and I/O pins)
Input HIGH Current (Input pins)
Input HIGH Current (I/O pins)
Input LOW Current (Input pins)
Input LOW Current (I/O pins)
High Impedance Output Current
(3-State Output pins)
Clamp Diode Voltage
Output HIGH Current
Output LOW Current
Output HIGH Voltage
VOL
Output LOW Voltage
IOS
IOFF
VH
Short Circuit Current(4)
Power Down Disable
Input Hysteresis
VIH
VIL
IIH
IIL
Test Conditions(1)
Guaranteed Logic HIGH Level
Guaranteed Logic LOW Level
VCC = Max.
VIN = 5.5V
VCC = Max.
VIN = VCC
VCC = Max.
VIN = GND
VCC = Max.
VIN = GND
VCC = Max.
VOUT = 5.5V
VCC = Max.
VOUT = GND
VCC = Min., IIN = –18mA
VCC = 3.3V, VIN = VIH or VIL, VO = 1.5V(3)
VCC = 3.3V, VIN = VIH or VIL, VO = 1.5V(3)
VCC = Min.
IOH = –12.0mA
VIN = VIH or VIL
VCC = Min.
IOL =12.0mA
VIN = VIH or VIL
VCC = Max.(3), VOUT ≤ GND –60
VCC = 0V, VIN or VOUT ­ 4.5V
Min.
Typ(2)
Max.
Units
2.2
2.0
–0.5
—
—
—
5.5
5.5
0.8
V
V
V
—
—
—
—
—
—
—
–36
25
2.4
—
—
—
—
—
—
–70
—
—
3.0
±1
±1
±1
±1
±1
±1
–1.2
–110
100
—
µA
µA
µA
µA
µA
µA
V
mA
mA
V
—
0.40
0.55
V
–85
—
—
–240
—
150
mA
±100
—
µA
mV
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. Not more than one output should be shorted at one time. Duration of the test should not exceed one second.
4. This parameter is guaranteed but not tested.
5. VOH = VCC – 0.6V at rated current.
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PS8098A
02/25/97
PI74LPT162Q952
3.3V
16-Bit
Registered
Transceivers
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Power Supply Characteristics
Parameters Description
Test Conditions(1)
Min.
Typ(2)
Max.
Units
ICC
Quiescent Power Supply Current
VCC = Max.
VIN = GND or VCC
0.1
10
µA
∆ICC
Quiescent Power Supply Current
TTL Inputs HIGH
VCC = Max.
VIN = VCC – 0.6V(3)
2.0
30
µA
ICCD
Dynamic Power Supply(4)
VCC = Max.,
Outputs Open
XOE = GND
One Bit Toggling
50% Duty Cycle
VIN = VCC
VIN = GND
50
75
µA/
MHz
IC
Total Power Supply
Current(6)
VCC = Max.,
Outputs Open
fI = 10 MHZ
50% Duty Cycle
XOE = GND
One Bit Toggling
VIN = VCC – 0.6V
VIN = GND
0.6
2.3
mA
VCC = Max.,
Outputs Open
fI = 2.5 MHZ
50% Duty Cycle
XOE = GND
16 Bits Toggling
VIN = VCC – 0.6V
VIN = GND
2.1
4.7(5)
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at Vcc = 3.3V, +25°C ambient.
3. Per TTL driven input; all other inputs at Vcc or GND.
4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations.
5. Values for these conditions are examples of the Icc formula. These limits are guaranteed but not tested.
6. IC =IQUIESCENT + IINPUTS + IDYNAMIC
IC = ICC + ∆ICC DHNT + ICCD (fCP/2 + fINI)
ICC = Quiescent Current (ICCL, ICCH and ICCZ)
∆ICC = Power Supply Current for a TTL High Input
DH = Duty Cycle for TTL Inputs High
NT = Number of TTL Inputs at DH
ICCD = Dynamic Current Caused by an Input Transition Pair (HLH or LHL)
fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices)
NCP = Number of Clock Inputs at fCP
fI = Input Frequency
NI = Number of Inputs at fI
All currents are in milliamps and all frequencies are in megahertz.
4
PS8098A
02/25/97
PI74LPT162Q952
3.3V
16-Bit
Registered
Transceivers
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Switching Characteristics over Operating Range(1)
LPT162Q952A
LPT162Q952B
Com.
Parameters
t PLH
t PHL
tPZH
tPZL
tPHZ
tPLZ
tSU
tH
tSU
tH
tW
tSK(o)
Description
Propagation Delay
XCLKAB, XCLKBA to XBX, XAX
LPT162Q952C
Com.
Com.
Conditions(2)
Min.(3)
Max.
Min.(3)
Max.
Min.(3)
Max.
Units
CL = 50pF
RL = 500Ω
2.0
10.0
2.0
7.5
2.0
6.3
ns
1.5
10.5
1.5
8.0
1.5
7.0
ns
1.5
10.0
1.5
7.5
1.5
6.5
ns
2.5
—
2.5
—
2.5
—
ns
2.0
—
2.0
—
2.0
—
ns
3.0
—
3.0
—
3.0
—
ns
2.0
—
2.0
—
2.0
—
ns
3.0
—
3.0
—
3.0
—
ns
—
0.5
—
0.5
—
0.5
ns
Output Enable Time
XOEBA, XOEAB to XAX, XBX
Output Disable Time(4)
XOEBA, XOEAB to XAX, XBX
Set-up Time HIGH or LOW
xAx, xBx to xCLKAB, xCLKBA
Hold Time HIGH or LOW
xAx, xBx to xCLKAB, xCLKBA
Setup Time HIGH or LOW
xCEAB, xCEBA to
xCLKAB, xCLKBA
Hold Time HIGH or LOW
xCEAB, xCEBA to
xCLKAB, xCLKBA
Pulse Width HIGH(4) or
LOW, xCLKAB or xCLKBA
Output Skew(5)
Notes:
1. Propagation Delays and Enable/Disable times are with Vcc = 3.3V ±0.3V, normal
range. For Vcc = 2.7V, extended range, all Propagation Delays and Enable/Disable
times should be degraded by 20%.
2. See test circuit and waveforms.
3. Minimum limits are guaranteed but not tested on Propagation Delays.
4. This parameter is guaranteed but not production tested.
5. Skew between any two outputs, of the same package, switching in the same
direction. This parameter is guaranteed by design.
Capacitance (TA = 25°C, F = 1 MHz)
Parame te rs (1)
De s cription
Te s t Conditions
Typ.
M ax.
Units
CIN
Input Capacitance
VIN = 0V
4.5
6
pF
COUT
Output Capacitance
VOut = 0V
5.5
8
Note:
1. This parameter is determined by device characterization but it not production tested.
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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PS8098A
02/25/97