ETC PI74LCX16952

PI74LCX16952
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Fast CMOS 3.3V 16-Bit
16-Bit Registered Transceivers
Product Features
Product Description
• Functionally compatible with FCT3, LVT, and 74
series 16952 families of products
• Tri-State outputs
• 5V Tolerant inputs and outputs
• 2.0V-3.6V VCC supply operation
• Balanced sink and source output drives (24 mA)
• Low ground bounce outputs
• Power Down High Impedance inputs and outputs
• Supports live insertion
• ESD Protection exceeds 2000V, Human Body Model
200V, Machine Model
• Packages available:
– 56-pin 240-mil wide plastic TSSOP (A)
– 56-pin 300-mil wide plastic SSOP (V)
Pericom Semiconductor’s PI74LCX series of logic circuits are
produced using the Company’s advanced 0.6 micron CMOS
technology, achieving industry leading speed grades.
The PI74LCX16952 is a 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 Ato-B Enable (xCEAB) input must be LOW in order 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 PI74LCX16952 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
1 A0
2 A0
D
1 B0
C
2B0
D
C
D
D
TO 7 OTHER CHANNELS
TO 7 OTHER CHANNELS
1
PS2096B
09/20/02
PI74LCX16952
Fast
CMOS
3.3V
16-Bit
Registered
Transceivers
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Product Pin Description
Pin Name
Truth Table(1,2)
Inputs
Description
Outputs
xOEAB
A-to-B Output Enable Input (Active LOW)
xCEAB
xCLKAB
xOEAB
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
46
12
45
56-Pin
13
44
V56
14
43
A56
15
42
16
41
17
40
18
39
19
20
21
22
23
38
37
36
24
35
34
33
25
26
27
32
31
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
PS2096B
09/20/02
PI74LCX16952
Fast
CMOS
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.
Recommended Operating Conditions
Symbol
VCC
Parameter
Supply Voltage
VI
Input Voltage
VO
Output Voltage
IOH/IOL
TA
∆t/∆V
Output Current
Min.
Max.
Operating
2.0
3.6
Data Retention
1.5
3.6
0
5.5
HIGH or LOW State
0
VCC
TRI-State
0
5.5
VCC = 3.0V-3.6V

±24
VCC = 2.7V

±12
−40
+85
°C
0
10
ns/V
Free-Air Operating Temperature
Input Edge Rate
V = 0.8V-2.0V, VCC = 3.0V
3
Units
V
mA
PS2096B
09/20/02
PI74LCX16952
Fast
CMOS
3.3V
16-Bit
Registered
Transceivers
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DC Electrical Characteristics (Over the Operating Range, TA = −40°C to +85°C, VCC = 2.7V to 3.6V)
Parameters
Description
Test Conditions(1)
VIH
Input HIGH Voltage
VIL
VOH
VOL
Min.
Typ(2)
Max.
Guaranteed Logic HIGH Level
2.0
—
—
Input LOW Voltage
Guaranteed Logic LOW Level
—
—
0.8
Output HIGH Voltage
VCC = 2.7-3.6
IOH = –0.1mA
VCC-0.2
—
—
VCC = 2.7
IOH = –12mA
2.2
—
—
VCC = 3.0
IOH = –18mA
2.4
—
—
IOH = –24mA
2.2
—
—
VCC = 2.7-3.6
IOL = 0.1mA
—
—
0.2
VCC = 2.7
IOL = 12mA
—
—
0.4
VCC = 3.0
IOL = 16mA
—
—
0.4
IOL = 24mA
—
—
0.55
—
−0.7
−1.2
Output LOW Voltage
VIK
Clamp Diode Voltage
VCC = Min., IIN = –18mA
II
Input Leakage Current
0 ≤ VI ≤ 5.5V
Vcc = 2.7-3.6
—
—
±5
IOZ
Tri-State Output Leakage
0 ≤ VO ≤ 5.5V
VI = VIH or VIL
VCC = 2.7-3.6
—
—
±5
IOFF
Power Down Disable
VCC = 0V, VIN or VOUT ≤ 5.5V
—
—
10
ICC
Quiescent Power Supply
Current
VCC = Max.
VIN = GND or VCC

0.1
10
∆ICC
Quiescent Power Supply
Current
TTL Inputs HIGH
VCC = Max.
VIN = VCC – 0.6V(3)


500
Units
V
µA
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.
3. Per TTL driven input; all other inputs at VCC or GND.
Capacitance
Parameters
Description
Test Conditions
Input Capacitance
VCC = Open, VI = 0V or VCC
7
COUT
Output Capacitance
VCC = 3.3V, VI = 0V or VCC
8
CPD
Power Dissipation Capacitance
VCC = 3.3V, VI = 0V or VCC, F = 10 MHz
20
CIN
4
Typ.
Units
pF
PS2096B
09/20/02
PI74LCX16952
Fast
CMOS
3.3V
16-Bit
Registered
Transceivers
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Switching Characteristics over Operating Range
VCC = 3.3V ± 0.3V
Parameters Description
VCC = 2.7V
Conditions
Min.
Max.
Min.
Max.
CL = 50pF
RL = 500Ω
2.0
6.3
2.0
7.6
tPLH
tPHL
Propagation Delay
xCLKAB, xCLKBA to xBx, xAx
tPZH
tPZL
Output Enable Time
xOEAB, xOEBA to xAx, xBx
1.5
7.0
1.5
8.4
tPHZ
tPLZ
Output Disable Time
xOEAB, xOEBA to xAx, xBx
1.5
6.5
1.5
7.8
tsu
Setup Time HIGH or LOW
xAx, xBx to xCLKAB, xCLKB
2.5

2.5

tH
Hold Time HIGH or LOW,
xAx, xBx to xCLKAB, xCLKBA
2.0

2.0

tSU
Setup Time HIGH or LOW
xCEAB, xCEBA to
xCLKAB, xCLKBA
3.0

3.0

tH
Hold Time HIGH or LOW,
xCEAB, xCEBA to
xCLKAB, xCLKBA
2.0

2.0

tW
Pulse Width HIGH or LOW
xCLKAB or CLKBA
3.0

3.0

Output Skew(1)

1.0


tSK(O)
Units
ns
Note:
1. Skew between any two outputs, of the same package, switching in the same direction.
Dynamic Switching Characteristics (TA = +25°C)
Parameters
Description
Test Conditions(1)
VOLP
Dynamic LOW Peak Voltage
VCC = 3.3V, CL = 50pF
VIH = 3.3V, VIL = 0V
VOLV
Dynamic LOW Valley Voltage
VCC = 3.3V, CL = 50pF
VIH = 3.3V, VIL = 0V
Typ.
Units
0.8
V
Note:
1. Measured with n–1 outputs switching from High-to-Low or Low-to-High. The remaining output is measured in the LOW state.
5
PS2096B
09/20/02
PI74LCX16952
Fast
CMOS
3.3V
16-Bit
Registered
Transceivers
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
Packaging Mechanical: 56-Pin TSSOP (A) Package
56
.236
.244
1
.547
.555
6.0
6.2
13.9
14.1
1.20
SEATING PLANE
.047
Max.
.004 0.09
.008 0.20
.0197
BSC
0.50
.007
.011
0.17
0.27
X.XX DENOTES DIMENSIONS
X.XX IN MILLIMETERS
0.45 .018
0.75 .030
.002
.006
0.05
0.15
.319 BSC
8.1
Packaging Mechanical: 56-Pin SSOP (V) Package
56
.291
.299
7.39
7.59
.396
.416
10.06
10.56
Gauge Plane
.02
.04
0.51
1.01
.010 0.25
1
.720 18.29
.730 18.54
.015 0.381 x 45˚
.025 0.635
.008
0.20
Nom.
.110 2.79 Max
.025 BSC
0.635
X.XX DENOTES DIMENSIONS
X.XX IN MILLIMETERS
.008
.0135
0.20
0.34
0-8˚
.008 0.20
.016 0.40
Ordering Information
Part Numbe r
De s cription
PI74LCX16952A
56- pin, 240- mil wide plastic TSSOP
PI74LCX16952V
56- pin, 300- mil wide plastic SSOP
Ope rating Range
–40°C to 85°C
Pericom Semiconductor Corporation
2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com
6
PS2096B
09/20/02