ETC PI74LCX16827V

PI74LCX16827
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Fast CMOS 3.3V 20-Bit Buffers
Product Features
Product Description
• Functionally compatible with FCT3, LVT, and 74 series
16827 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
• 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 PI74LCX16827 is a 20-bit wide bus driver designed to provide
buffering and high-performance bus interfacing for wide data/
address paths or busses with parity. Two pairs of nanded output
enable controls allow the device to be operated as two
10-bit buffers or as one 20-bit buffer. Signal pins are arranged in a
flow-through organization for ease of layout and hysteresis is
designed into all inputs to improve noise margin.
The PI74LCX16827 can be driven from either 3.3V or 5.0V devices
allowing this device to be used as a translator in a mixed
3.3V/5.0V system.
Logic Block Diagram
2OE1
2OE2
1OE1
1OE2
1A1
1 Y1
2A1
2 Y1
TO 9 OTHER CHANNELS
TO 9 OTHER CHANNELS
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PS2095A 02/11/97
PI74LCX16827
3.3V
20-BIT
BUFFERS
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Truth Table(1)
Product Pin Description
Pin Name
Inputs
Description
xOEX
Output Enable Inputs (Active LOW)
Outputs
xOE1
xOE2
xAx
xYx
XAX
Data Inputs
L
L
L
L
XYX
3-State Outputs
L
L
H
H
H
X
X
Z
X
H
X
Z
Note:
1. H = High Voltage Level, X = Don’t Care,
L = Low Voltage Level, Z = High Impedance
Product Pin Configuration
1OE1
1Y1
1Y2
GND
1Y3
1Y4
VCC
1Y5
1Y6
1Y7
GND
1
2
56
55
1OE2
3
4
5
54
53
52
1A2
6
7
8
51
50
1A4
49
1A5
9
10
48
1A6
47
1A7
11
12
46
GND
1A1
GND
1A3
VCC
45
13 56-PIN 44
1A8
14
15
16
43
42
1A10
41
2A2
17
18
40
39
2A3
38
37
36
2A4
2Y6
19
20
21
VCC
22
VCC
2Y7
23
24
35
34
33
25
26
32
31
GND
27
28
30
29
2A10
1Y8
1Y9
1Y10
2Y1
2Y2
2Y3
GND
2Y4
2Y5
2Y8
GND
2Y9
2Y10
2OE1
V56
A56
1A9
2A1
GND
2A5
2A6
2A7
2A8
2A9
2OE2
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PS2095A 02/11/97
PI74LCX16827
3.3V
20-BIT
BUFFERS
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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
PS2095A 02/11/97
PI74LCX16827
3.3V
20-BIT
BUFFERS
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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)
Min.
Typ(2)
Max.
VIH
Input HIGH Voltage
Guaranteed Logic HIGH Level
2.0
—
—
VIL
Input LOW Voltage
Guaranteed Logic LOW Level
—
—
0.8
VOH
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
VOL
Output LOW Voltage
Units
V
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
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
CIN
Test Conditions
Typ.
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
4
Units
pF
PS2095A 02/11/97
PI74LCX16827
3.3V
20-BIT
BUFFERS
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Switching Characteristics over Operating Range
VCC = 3.3V ± 0.3V
Parameters
VCC = 2.7V
Description
Conditions
Min.
Max.
Min.
Max.
tPHL
tPHL
Propagation Delay
Dxx to Oxx
CL = 50pF
RL = 500Ω
1.5
5.0
1.5
5.6
tPZH
tPZH
Output Enable Time
1.5
8.0
1.5
8.6
tPHZ
tPLZ
Output Disable Time
1.5
6.0
1.5
6.3
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
VOLP
VOLV
Description
Test Conditions(1)
Dynamic LOW Peak Voltage
VCC = 3.3V, CL = 50pF
VIH = 3.3V, VIL = 0V
0.8
VCC = 3.3V, CL = 50pF
VIH = 3.3V, VIL = 0V
0.8
Dynamic LOW Valley Voltage
Typical
Units
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.
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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PS2095A 02/11/97