PERICOM PI74VCX16244A

PI74VCX16244
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16-Bit Buffer/Driver
with 3-State Outputs
Features
Description
• The PI74VCX Family is designed for low voltage
operation, CD = 1.8V to 3.6V
• 3.6V Tolerant Inputs and Outputs
• Supports Live Insertion
• Balanced Drive, ±24mA
• Uses patented Noise Reduction Circuitry
• Typical VOLP (Output Ground Bounce) <0.6V
at VDD = 2.5V, TA = 25ºC
• Typical VOHV (Output VOH Undershoot) < -0.6V
at VDD = 2.5V, TA = 25ºC
• Power-Off high impedance inputs and outputs
• Industrial operation at –40°C to +85°C
• Packaging (Pb-free & Green available):
– 48-pin 240-mil wide plastic TSSOP (A)
Pericom Semiconductor’s PI74VCX16244 buffer/driver is designed
specifically to improve both the performance and density of 3-state
memory address drivers, clock drivers, and bus-oriented receivers
and transmitters.
The device can be used as four 4-bit buffers, two 8-bit buffers, or one
16-bit buffer. It provides true outputs and symmetrical active-low
output-enable (OE) inputs.
To ensure the high-impedance state during power up or power down,
OE should be tied to Vcc through a pullup resistor; the minimum
value of the resistor is determined by the current-sinking capability
of the driver.
The PI74VCX family is I/O Tolerant, allowing it to operate in
1.8/3.6V systems.
Block Diagram
1OE
1A1
1A2
1A3
1A4
2OE
2A1
2A2
2A3
2A4
1
3OE
47
2
46
3
44
5
43
6
1Y1
3A1
1Y2
3A2
1Y3
3A3
1Y4
3A4
48
4OE
41
8
40
9
38
11
37
12
2Y1
4A1
2Y2
4A2
2Y3
4A3
2Y4
4A4
1
25
36
13
35
14
33
16
32
17
3Y1
3Y2
3Y3
3Y4
24
30
19
29
20
27
22
26
23
4Y1
4Y2
4Y3
4Y4
PS8160C
09/27/04
PI74VCX16244
16-Bit Buffer/Driver
with 3-State Outputs
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Pin Description
Pin Name
nOE
nAx
nYx
GND
VCC
Truth Table(1)
Inputs
Description
3-State Output Enable Inputs (Active LOW)
Inputs
3-State Outputs
Ground
Power
1
48
2OE
1Y 1
2
47
1A 1
1Y 2
3
46
1A 2
GND
4
45
GND
1Y 3
5
44
1A 3
1Y 4
6
43
1A 4
VCC
7
42
VCC
2Y 1
8
41
2A 1
2Y 2
9
40
2A 2
GND
10
39
GND
2Y 3
11
38
2A 3
2Y 4
12
37
2A 4
3Y 1
13
36
3A 1
3Y 2
14
35
3A 2
GND
15
34
GND
3Y 3
16
33
3A 3
3Y 4
17
32
3A 4
VCC
18
31
VCC
4Y 1
19
30
4A 1
4Y 2
20
29
4A 2
GND
21
28
GND
4Y 3
22
27
4A 3
4Y 4
23
26
4A 4
4OE
24
25
3OE
nOE
nAX
nYx
L
H
H
L
L
L
H
X
Z
Notes:
1. H = High Signal Level
L = Low Signal Level
X = Don’t Care or Irrelevant
Z = High Impedance
Pin Configuration
1OE
Outputs
2
PS8160C
09/27/04
PI74VCX16244
16-Bit Buffer/Driver
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, VDD ........................................... 0.5V to 4.6V
Input Voltage Range, VI ............................................... -0.5V to 4.6V
Output Voltage Range, VO (3-Stated) ........................... -0.5V to 4.6V
Output Voltage Range, VO(1) (Active) ..................... -0.5V to VCC+0.5
DC Input Diode Current (IIK) VI<0V ...................................... -50mA
DC Output Diode Current (IOK)
VO<0V .................................................................................. -50mA
VO>VDD ............................................................................... +50mA
DC Output Source/Sink Current (IOH/IOL) .............................. ±50mA
DC VDD or GND Current per Supply Pin (ICC or GND) ...... ±100mA
Storage Temperature Range, Tstg .............................. –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(2)
M in.
M a x.
Operating
1.8
3.6
Data Retention Only
1.2
3.6
2.0
VDD
Supply voltage
VIH
High- level input voltage
VDD = 2.7V to 3.6V
VIL
Low- level input voltage
VDD = 2.7V to 3.6V
VI
Input voltage
VO
Output voltage
IO
Output current in IOH/IOL
∆t/∆v
TA
Input transistion rise or fall rate(3)
Operating free- air temperature
0.8
- 0.3
3.6
Active State
0
VDD
Off State
0
3.6
VDD = 3.0V to 3.6V
VDD = 2.3V to 2.7V
VDD = 1.8V
Units
V
± 24
±18
±6
mA
0
10
ns/V
−40
85
C
Notes
1. Absolute maximum of IO must be observed.
2. Unused control inputs must be held HIGH or LOW to prevent them from floating.
3 As measured between 0.8V and 2.0V, VDD = 3.0V.
3
PS8160C
09/27/04
PI74VCX16244
16-Bit Buffer/Driver
with 3-State Outputs
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Electrical Characteristics over Recommended Operating Free-Air Temperature Range
(unless otherwise noted)
DC Characteristics (2.7V<VDD ≤ 3.6V)
Parame te r
VIH
HIGH Level Input Voltage
VIL
LOW Level Input Voltage
Conditions
VDD
HIGH Level Output Voltage
2.7 - 3.6
LOW Level Output Voltage
IOH = −12mA
2.7
IOH = −18mA
3.0
2.7
0.4
IOL = 18mA
3- STATE Output Leakage
0 ≤ VO ≤ 3.6V
VI = VIH or VIL
IOFF
Power- OFF Leakage Current
0 ≤ (VI,VO) ≤ 3.6V
Increase in IDD per input
V
2.2
IOL = 12mA
IOZ
∆IDD
2.4
0.2
VI = 0.0V, VI = 3.6V
Quiescent Supply Current
2.2
2.7 - 3.6
Input Leakage Current
IDD
Units
0.8
IOL = 100µA
3.0
IOL = 24mA
II
M ax.
VDD - 0.2
IOH = −24mA
VOL
Typ.
2.0
IOH = −100µA
VOH
M in.
0.4
0.55
3.6
± 5.0
2.7 - 3.6
±10
0
10
VI = VDD to GND
20
VDD ≤ (VI,VO) ≤ 3.6V
2.7 - 3.6
VIH = VDD - 0.6V,
Other inputs at VDD or Gnd
µA
± 20
750
4
PS8160C
09/27/04
PI74VCX16244
16-Bit Buffer/Driver
with 3-State Outputs
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Electrical Characteristics over Recommended Operating Free-Air Temperature Range
(unless otherwise noted) (continued from previous page)
DC Characteristics (2.3V ≤ VDD ≤ 2.7V)
Parame te rs
VIH
HIGH Level Input Voltage
VIL
LOW Level Input Voltage
Conditions
HIGH Level Output Voltage
M in.
2.0
IOH = - 12mA
1.8
2.3
2.3 - 2.7
IOL = 12mA
Input Leakage Current
VI = 0.0V, VI = 2.7V
IOZ
3- STATE Output Leakage
0 ≤ VO ≤ 3.6V
VI = VIH or VIL
IOFF
Power- OFF Leakage Current
0 ≤ (VI,VO) ≤ 3.6V
IDD
Quiescent Supply Current
VI = VDD or GND
VDD ≤ (VI,VO) ≤ 3.6V
V
1.7
0.2
0.4
2.3
IOL = 18mA
II
Units
VDD - 0.2
IOH = - 6mA
IOL = 100µA
LOW Level Output Voltage
M ax.
0.7
2.3 - 2.7
IOH = - 18mA
VOL
Typ.
1.6
IOH = - 100µA
VOH
VDD
0.6
2.7
± 5.0
2.3 - 2.7
±10
0
10
µA
20
2.3 - 2.7
± 20
DC Characteristics (1.8V ≤ VDD ≤ 2.3V)
Parame te rs
VIH
HIGH Level Input Voltage
VIL
LOW Level Input Voltage
VOH
HIGH Level Output Voltage
Conditions
VDD
1. 8 - 2 . 3
IOH = - 100 µA
LOW Level Output Voltage
Typ.
M a x.
0.2 x VDD
V
1.4
IOL = 100 µA
1.8
IOL = 6 mA
0.2
0.3
Input Leakage Current
VI = 0.0V, VI = 1.8V
± 5.0
IOZ
3- STATE Output Leakage
0 ≤ VO ≤ 3.6V
VI = VIH or VIL
± 10
IOFF
Power- OFF Leakage Current 0 ≤ (VI,VO) ≤ 3.6V
IDD
Quiescent Supply Current
II
0
10
VI = VDD or GND
1.8
20
VDD ≤ (VI,VO) ≤ 3.6V
1.8
± 20
5
Units
0.7 x VDD
VDD - 0.2
IOH = - 6 mA
VOL
M in.
µA
PS8160C
09/27/04
PI74VCX16244
16-Bit Buffer/Driver
with 3-State Outputs
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AC Electrical Characteristics(1)
TA = -40°C to +85°C, CL = 30pF, RL = 500Ω
Symbol
Parame te r
VDD = 3.3V ±0.3V
VDD = 2.5V ±0.2V
VDD = 1.8V
M in.
M a x.
M in.
M a x.
M in.
M a x.
tPHL, tPLH
Prop Delay
0.8
2.5
1.0
3.0
1.5
5.0
tPZL, tPZH
Output Enable Time
0.8
3.5
1.0
4.1
1.5
6.5
tPLZ, tPHZ
Output Disable Time
0.8
3.5
1.0
3.8
1.5
5.0
tOSHL
tOSLH
Output to Output Skew(2)
0.5
0.5
Units
ns
0.5
Notes
1. For CL = 50pF add approximatly 300ps to AC maximum specification
2. Skew is defined as the absolute value of the difference between the actual propagation delay for any
two separate outputs of the same device. The specification applies to any outputs switching in the
same direction, either HIGH or LOW (tOSHL) or LOW to HIGH (tOSLH).
Dynamic Switching Characteristics
Symbol
Parame te r
Conditions
VDD
TA= +25°C
Typical
VOLP
Quiet Output Dynamic Peak VOL
CL = 50pF, VIH= VDD, VIL= 0V
1.8
2.5
3.3
0.25
0.6
0.8
VOLV
Quiet Output Dynamic Valley VOL
CL = 50pF, VIH= VDD, VIL= 0V
1.8
2.5
3.3
- 0.25
- 0.6
- 0.8
VOHV
Quiet Output Dynamic Valley VOH
CL = 50pF, VIH= VDD, VIL= 0V
1.8
2.5
3.3
1.5
1.9
2.2
Units
V
Capacitance
Symbol
Parame te r
Conditions
TA = +25ºC
Typical
CIN
Input Capacitance
VDD = 1.8V, 2.5V or 3.3V,
V1 = 0V or VDD
6
COUT
Output Capacitance
V1 = 0V or VDD,
VDD = 1.8V, 2.5V or 3.3V
7
CPD
Power Dissipation Capacitance
V1 = 0V or VDD, F = 10MHz
VDD = 1.8V, 2.5V or 3.3V
6
Units
pF
20
PS8160C
09/27/04
PI74VCX16244
16-Bit Buffer/Driver
with 3-State Outputs
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Test Circuits and Switching Waveforms
Switch Position
Parameter Measurement Information (VDD = 1.8V - 3.6V)
2 x VDD
R1
500Ω
From Output
Under Test
Open
RL
500Ω
50pF
3
CL
Te s t
S1
tpd
Open
tPLZ/tPZL
2 x VDD
tPHZ/tPZH
GND
GND
Pulse Width
(See Note A)
VDD
Low-High-Low
Pulse
VDD/2
0V
tW
VDD
High-Low-High
Pulse
Setup, Hold, and Release Timing
Data
Input
tSU
Timing
Input
tH
VDD/2
0V
VDD
VDD/2
0V
Propagaton Delay
VDD
VDD/2
0V
VDD
VDD/2
Input
0V
tPHL
tPLH
VDD
Output
VDD/2
VOL
tPHL
tPLH
VDD
Opposite Phase
Input Transition
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 pulses are supplied by generators having the
following characteristics: PRR ≤ 10 MHz, ZO = 50Ω,
tr ≤ 2ns, tf ≤ 2ns, measured from 10% to 90%, unless
otherwise specified.
D. The outputs are measured one at a time with one
transition per measurement.
VDD/2
0V
Enable Disable Timing
VDD
Output
Control
(Active LOW)
VDD/2
0V
tPLZ
tPZL
VDD
Output
Waveform 1
S1 at 2xVDD
(see Note B)
Output
Waveform 2
S1 at GND
VDD
VDD/2
+0.15V
tPZH
-0.15V
VOH
VDD/2
0V
(see Note B)
7
VOL
tPHZ
PS8160C
09/27/04
PI74VCX16244
16-Bit Buffer/Driver
with 3-State Outputs
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Packaging Mechanical: 48-pin TSSOP (A)
48
.236
.244
1
6.0
6.2
.488 12.4
.496 12.6
.047
1.20 Max
SEATING PLANE
.004 0.09
.008 0.20
X.XX
X.XX
DENOTES DIMENSIONS
IN MILLIMETERS
.0197
BSC
0.50
.002
.006
0.05
0.15
.007
.010
0.17
0.27
0.45 .018
0.75 .030
.319
BSC
8.1
Ordering Information
Ordering Code
Package Code
Package Description
PI74VCX16244A
A
48-pin TSSOP
PI74VCX16244AE
A
Pb-free & Green, 48-pin TSSOP
Notes:
1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/
Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com
8
PS8160C
09/27/04