1PS2031N 11/06/08
Block Diagram
Description
Pericom Semiconductor’s PI74FCT16244T and PI74FCT162244T
are non-inverting 16-bit buffer/line drivers designed for
applications driving high capacitance loads and low impedance
backplanes. These high-speed, low power devices offer bus/
backplane interface capability and a flow-through organization
for ease of board layout. These devices are designed with three-
state controls to operate in a Quad-Nibble, Dual-Byte, or a single
16-bit word mode.
The PI74FCT16244T output buffers are designed with a Power-
Off disable allowing “live insertion” of boards when used as
backplane drivers.
The PI74FCT162244T has ±24mA balanced output drivers. It is
designed with current limiting resistors at its outputs to control
the output edge rate resulting in lower ground bounce and
undershoot. This eliminates the need for external terminating
resistors for most interface applications.
Features
Common Features
•High-speed, low-power devices with high-current drive
VCC = 5V ±10%
•Hysteresis on all inputs
•Device models available upon request
PI74FCT16244T Features
•High output drive: IOH = –32mA; IOL = 64mA
•Power off disable outputs permit "live insertion"
•Typical VOLP (Output Ground Bounce)
< 1.0V at VCC = 5V, TA = 25°C
PI74FCT162244T Features
•Balanced output drivers: ±24mA
•Reduced system switching noise
•Typical VOLP (Output Ground Bounce)
< 0.6V at VCC = 5V, TA = 25°C
•Packaging (Pb-free & Green available):
– 48-pin 240-mil wide plastic TSSOP (A)
– 48-pin 300-mil wide plastic SSOP (V)
– 48-pin 173-mil wide plastic TVSOP (K)
PI74FCT16244T
PI74FCT162244T
Fast CMOS 16-Bit Buffer/Line Drivers
08-0291
PI74FCT16244T/162244T
16-Bit Buffer/Line Drivers
2PS2031N 11/06/08
Product Pin Description
Pin Name Description
xOE 3-State Output Enable Inputs (Active LOW)
xAx Inputs(1)
xYx 3-State Outputs
GND Ground
VCC Power
Inputs(1) Outputs(1)
XOE xAx xYx
LL L
LH H
HX Z
Truth Table
Note:
1. H = High Voltage Level, X = Don’t Care,
L = Low Voltage Level, Z = High Impedance
Pin Configuration
1
2
3
4
5
6
7
8
9
48
10
47
11
46
12
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
32
31
30
29
28
27
26
25
1
OE
1
Y
0
1
Y
1
GND
1
Y
2
1
Y
3
V
CC
2
Y
0
2
Y
1
GND
2
Y
2
2
Y
3
3
Y
0
3
Y
1
GND
3
Y
2
3
Y
3
V
CC
4
Y
0
4
Y
1
GND
4
Y
2
4
Y
3
4
OE
2
O
E
1
A
0
1
A
1
GN
D
1
A
2
1
A
V
CC
2
A
0
2
A
1
GN
D
2
A
2
2
A
A
0
A
1
G
N
D
A
2
A
V
CC
4
A
0
4
A
1
G
ND
4
A
2
4
A
O
E
2
OE
1
A
0
1
A
1
GND
1
A
2
1
A
3
V
CC
2
A
0
2
A
1
GND
2
A
2
2
A
3
3
A
0
3
A
1
GND
3
A
2
3
A
3
V
CC
4
A
0
4
A
1
GND
4
A
2
4
A
3
3
OE
08-0291
PI74FCT16244T/162244T
16-Bit Buffer/Line Drivers
3PS2031N 11/06/08
DC Electrical Characteristics (Over the Operating Range, TA = –40°C to +85°C, VCC = 5.0V ±10%)
Parameters Description Test Conditions(1) Min. Typ.(2) Max. Units
VIH Input HIGH Voltage Guaranteed Logic HIGH Level 2.0 V
VIL Input LOW Voltage Guaranteed Logic LOW Level 0.8 V
IIH Input HIGH Current Standard Input, VCC = Max. VIN = VCC 1μA
IIH Input HIGH Current Standard I/O, VCC = Max. VIN = VCC 1μA
IIL Input LOW Current Standard Input , VCC = Min. VIN = GND –1 μA
IIL Input LOW Current Standard I/O, VCC = Min. VIN = GND –1 μA
IOZH High Impedance VCC = Max. VOUT = 2.7V 1 μA
IOZL Output Current VCC = Max. VOUT = 0.5V –1 μA
VIK Clamp Diode Voltage VCC = Min., IIN = –18mA –0.7 –1.2 V
IOS Short Circuit Current VCC = Max.(3), VOUT = GND –80 –140 –320 mA
IOOutput Drive Current VCC = Max.(3), VOUT = 2.5V –50 –180 mA
VHInput Hysteresis 100 mV
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 .......................................................................... 120mA
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.
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 = 5.0V, +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.
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
08-0291
PI74FCT16244T/162244T
16-Bit Buffer/Line Drivers
4PS2031N 11/06/08
PI74FCT16244T Output Drive Characteristics (Over the Operating Range)
Parameters Description Test Conditions(1) Min. Typ.(2) Max. Units
VOH Output HIGH Voltage VCC = Min., VIN = VIH or VIL IOH = –3.0mA 2.5 3.5 V
IOH = –15.0mA 2.4 3.5
IOH = –32.0mA 2.0 3.0
VOL Output LOW Voltage VCC = Min., VIN = VIH or VIL IOL = 64mA 0.2 0.55 V
IOFF Power Down Disable VCC = 0V, VIN or VOUT - 4.5V ±100 μA
PI74FCT162244T Output Drive Characteristics (Over the Operating Range)
Parameters Description Test Conditions(1) Min. Typ.(2) Max. Units
VOH Output HIGH Voltage VCC = Min., VIN = VIH or VIL IOH = –24.0mA 2.4 3.3 V
VOL Output LOW Voltage VCC = Min., VIN = VIH or VIL IOL = 24mA 0.3 0.55 V
IODL Output LOW Current VCC = 5V, VIN = VIH OR V IL, VOUT = 1.5V(3) 60 115 150 mA
IODH Output HIGH Current VCC = 5V, VIN = VIH OR V IL, VOUT = 1.5V(3) –60 –115 –160 mA
Notes:
1. This parameter is determined by device characterization but is not production tested.
Capacitance (TA = 25°C, f = 1 MHz)
Parameters(1) Description Test Conditions Typ Max. Units
CIN Input Capacitance VIN = 0V 4.5 7.5 pF
COUT Output Capacitance VOUT = 0V 5.5 8 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 = 5.0V, +25°C ambient and maximum loading.
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 = 5.0V, +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.
08-0291
PI74FCT16244T/162244T
16-Bit Buffer/Line Drivers
5PS2031N 11/06/08
Power Supply Characteristics
Parameters Description Test Conditions(1) Min. Typ(2) Max. Units
ICC Quiescent Power VCC = Max. VIN = GND or VCC 0.1 500 μA
Supply Current
ΔICC Supply Current per VCC = Max. VIN = 3.4V(3) 0.5 1.5 mA
Input @ TTL HIGH
ICCD Supply Current per VCC = Max., VIN = VCC 60 100 μA/
Input per MHz(4) Outputs Open VIN = GND MHz
XOE = GND
One Bit Toggling
50% Duty Cycle
ICTotal Power Supply VCC = Max., VIN = VCC 0.6 1.5(5) mA
Current(6) Outputs Open VIN = GND
fI = 10 MHZ
50% Duty Cycle
XOE = GND
One Bit Toggling VIN = 3.4V 0.9 2.3(5)
VIN = GND
VCC = Max., VIN = VCC 2.4 4.5(5)
Outputs Open VIN = GND
fI = 2.5 MHZ
50% Duty Cycle
XOE = GND
16 Bits Toggling VIN = 3.4V 6.4 16.5(5)
VIN = GND
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at Vcc = 5.0V, +25°C ambient.
3. Per TTL driven input (VIN = 3.4V); 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 + ΔICC DHNT + ICCD (fCP/2 + fINI)
ICC = Quiescent Current
ΔICC = Power Supply Current for a TTL High Input (VIN = 3.4V)
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)
fI = Input Frequency
NI = Number of Inputs at fI
All currents are in milliamps and all frequencies are in megahertz.
08-0291
PI74FCT16244T/162244T
16-Bit Buffer/Line Drivers
6PS2031N 11/06/08
PI74FCT16244T Switching Characteristics over Operating Range
16244T 16244AT 16244CT 16244ET
Com. Com. Com. Com.
Parameters Description Conditions Min Max Min Max Min Max Min Max Units
t
PLH
Propagation Delay
(1)
C
L
= 50 pF 1.5 6.5 1.5 4.8 1.5 4.1 1.5 3.2 ns
t
PHL X
A
X
to
X
Y
X
R
L
= 500Ω
t
PZH
Output Enable Time 1.5 8.0 1.5 6.2 1.5 5.8 1.5 4.4 ns
t
PZL X
OE to
X
Y
X
t
PHZ
Output Disable Time
(2)
1.5 7.0 1.5 5.6 1.5 5.2 1.5 4.3 ns
t
PLZ X
OE to
X
Y
X
t
SK
(o) Output Skew
(3)
0.5 0.5 0.5 0.5 ns
PI74FCT162244T Switching Characteristics over Operating Range
162244T 162244AT 162244CT 162244ET
Com. Com. Com. Com.
Parameters Description Conditions Min Max Min Max Min Max Min Max Units
t
PLH
Propagation Delay
(1)
C
L
= 50 pF 1.5 6.5 1.5 4.8 1.5 4.1 1.5 3.2 ns
t
PHL X
A
X
to
X
Y
X
R
L
= 500Ω
t
PZH
Output Enable Time 1.5 8.0 1.5 6.2 1.5 5.8 1.5 4.4 ns
t
PZL X
OE to
X
Y
X
t
PHZ
Output Disable Time
(2)
1.5 7.0 1.5 5.6 1.5 5.2 1.5 4.0 ns
t
PLZ X
OE to
X
Y
X
t
SK
(o) Output Skew
(3)
0.5 0.5 0.5 0.5 ns
Notes:
1. Minimum limits are guaranteed but not tested on Propagation Delays.
2. This parameter is guaranteed but not production tested.
3. Skew between any two outputs, of the same package, switching in the same direction. This parameter is guaranteed by design.
Notes:
1. Minimum limits are guaranteed but not tested on Propagation Delays.
2. This parameter is guaranteed but not production tested.
3. Skew between any two outputs, of the same package, switching in the same direction. This parameter is guaranteed by design.
08-0291
PI74FCT16244T/162244T
16-Bit Buffer/Line Drivers
7PS2031N 11/06/08
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Packaging Mechanical: 48-Pin, 240 mil wide Plastic TSSOP (A)
08-0291
PI74FCT16244T/162244T
16-Bit Buffer/Line Drivers
8PS2031N 11/06/08
Packaging Mechanical: 48-pin 300 mil wide plastic SSOP (V)
1
0.20
0.51
1.01
0.25
0.381
0.635
.008
.008
.016
Û 0.20
0.40
.110 2.79
.010
Gauge Plane
.02
.04
.015
.025 [Û
.025 BSC
0.635
.291
.299
X.XX
X.XX
DENOTES DIMENSIONS
IN MILLIMETERS
7.39
7.59
.395
.420
10.03
10.67
.620
.630
15.75
16.00
.008
.0135
0.20
0.34
1
48
Nom.
Max
DESCRIPTION: 48-Pin, 300-Mil Wide, SSOP
PACKAGE CODE: V
DOCUMENT CONTROL NO.
PD - 1401
REVISION: E
DATE: 03/09/05
Notes:
1) Controlling dimensions in inches.
2) Ref: JEDEC MO-118B/AA
Pericom Semiconductor Corporation
3545 N. 1st Street, San Jose, CA 95134
1-800-435-2335 • www.pericom.com
08-0291
PI74FCT16244T/162244T
16-Bit Buffer/Line Drivers
9PS2031N 11/06/08
Notes:
•Thermal characteristics can be found on the company web site at www.pericom.com/packaging/
•E = Pb-free & Green
•Adding an X suffix = Tape/Reel
PI74FCT162244T Ordering Information
Ordering Code Package Code Speed Grade Package Type
PI74FCT162244TAE A Blank Pb-free & Green, 48-pin 240-mil wide TSSOP
PI74FCT162244CTV V C 48-pin 300-mil wide SSOP
PI74FCT162244CTA A C 48-pin 240-mil wide TSSOP
PI74FCT162244ATV V A 48-pin 300-mil wide SSOP
Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com
08-0291