1PS7006C 06/27/01
PI49FCT805T/2805T Logic Block Diagram PI49FCT806T Logic Block Diagram
Product Description
Pericom Semiconductors PI49FCT series of logic circuits are
produced using the Companys advanced 0.8 micron CMOS
technology, achieving industry leading speed grades.
The PI49FCT805T and PI49FCT2805T are non-inverting clock
drivers. The PI49FCT806T is an inverting clock driver designed with
two independent groups of buffers that have Hi-Z state Output
Enable inputs (active LOW) with a 1-in, 5-out configuration per
group. Each clock driver consists of two banks of drivers, driving
five outputs each from a standard TTL-compatible CMOS input.
The PI49FCT2805T also features a 25-ohm on-chip resistor for lower
noise.
Product Features
Extremely low output skew: 0.5ns
Monitor output pin
Clock busing with Hi-Z state control
TTL input and CMOS output compatible
Extremely low static power (1mW, typ.)
Hysteresis on all inputs
Packages available:
 20-pin 209 mil wide SSOP (H)
 20-pin 300 mil wide SOIC (S)
 20-pin 150 mil wide QSOP (Q)
Device models available on request
Industrial Operation at -40ºC to +85ºC
OE
B
IN
A
OA
0–4
IN
B
OE
A
OB
0–4
MON
5
5
OEB
IN
A
OA
0–4
IN
B
OEA
OB
0–4
MON
5
5
Fast CMOS
Buffer/Clock Driver
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PI49FCT805T
PI49FCT2805T
PI49FCT806T
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PI49FCT805T
PI49FCT2805T/PI49FCT806T
Fast CMOS Buffer/Clock Driver
PI49FCT805T/2805T Product Pin Configuration
Inputs Outputs
OEA, OEBINA, INBOAN, OBNMON
LLLL
LHHH
HLZL
HHZH
PI49FCT805T/2805T Truth Table(1)
Note:
1. H= High Voltage Level
L = Low Voltage Level
Z= High Impedance
Inputs Outputs
OEA, OEBINA, INBOAN, OBNMON
LLHH
LHLL
HLZH
HHZL
PI49FCT806T Truth Table(1)
PI49FCT806T Product Pin Configuration
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
Vcc
A
OA
0
OA
1
OA
2
GND
A
OA
3
OA
4
GND
B
OE
A
IN
A
Vcc
B
OB
0
OB
1
OB
2
GND
B
OB
3
OB
4
MON
OE
B
IN
B
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
Vcc
A
OA
0
OA
1
OA
2
GND
A
OA
3
OA
4
GND
B
OE
A
IN
A
Vcc
B
OB
0
OB
1
OB
2
GND
B
OB
3
OB
4
MON
OE
B
IN
B
Product Pin Description
emaNniPnoitpircseD
EO
A
EO,
B
)WOLevitcA(stupnIelbanEtuptuOetatSZ-iH
NI
A
NI,
B
stupnIkcolC
AO
N
BO,
N
)T5082TCF94IP/T508TCF94IP(stuptuOkcolC
AO
N
BO,
N
)T608TCF94IP(tuptuOkcolC
NOMtuptuOrotinoM
DNGdnuorG
V
CC
rewoP
20-Pin
H, Q, S
20-Pin
H, Q, S
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PI49FCT805T
PI49FCT2805T/PI49FCT806T
Fast CMOS Buffer/Clock Driver
DC Electrical Characteristics (Over the Operating Range, TA = 40°C to +85°C, VCC = 5.0V ± 5%)
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 Current VCC = Min., VIN = VIH or VIL IOL = 64mA 0.3 0.55 V
IOL = 12mA (25) 0.3 0.50 V
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 VCC = Max. VIN = VCC A
IIL Input LOW Current VCC = Max. VIN = GND 1 µA
IOZH High Impedance VCC = Max. VOUT = VCC A
IOZL Output Current VOUT = GND 1 µA
IIInput HIGH Current VCC = Max., VIN =VCC (Max.) 20 µA
VIK Clamp Diode Voltage VCC = Min., IIN =18mA 0.7 1.2 V
IOS Short Circuit Current VCC = Max.(3), VOUT = GND 60 120 225 mA
VHInput Hysteresis VCC = 5 V 200 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 ................................................................................... 0.5W
Note:
Stresses greater than those listed under MAXIMUM
RATINGS may cause permanent damage to the de-
vice. This is a stress rating only and functional opera-
tion 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.
Capacitance (TA = 25°C, f = 1 MHz)
Parameters(4) Description Test Conditions Typ Max. Units
CIN Input Capacitance VIN = 0 V 6 10 pF
COUT Output Capacitance VOUT = 0 V 8 12 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.
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 determined by device characterization but is not production tested.
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
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PI49FCT805T
PI49FCT2805T/PI49FCT806T
Fast CMOS Buffer/Clock Driver
Power Supply Characteristics
Parameters Description Test Conditions(1) Min. Typ(2) Max. Units
ICC Quiescent Power VCC = Max. VIN = GND or VCC 330µA
Supply Current
ICC Supply Current per VCC = Max. VIN = 3.4V(3) 0.5 2.0 mA
Input @ TTL HIGH
ICCD Supply Current per VCC = Max., VIN = VCC 0.15 0.25 mA/
Input per MHz(4) Outputs Open VIN = GND MHz
OEA = OEB = GND
Per Output Toggling
50% Duty Cycle
ICTotal Power Supply VCC = Max., VIN = VCC 7.7 14.0(5) mA
Current(6) Outputs Open VIN = GND
fI = 10 MHZ
50% Duty Cycle VIN = 3.4V 8.0 15.0(5)
OEA = OEB = GND VIN = GND
Five Outputs Toggling
VCC = Max., VIN = VCC 4.3 8.4(5)
Outputs Open VIN = GND
fI = 2.5 MHZ
50% Duty Cycle
OEA = OEB = GND VIN = 3.4V 4.8 10.4(5)
Eleven Outputs VIN = GND
Toggling
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 + ICC DHNT + ICCD (fCP/2 + fINI)
ICC = Quiescent Current
ICC = 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.
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PI49FCT805T
PI49FCT2805T/PI49FCT806T
Fast CMOS Buffer/Clock Driver
PI49FCT805/806T Switching Characteristics over Operating Range
Notes:
1. See test circuit and wave forms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
3. Skew measured at worse cast temperature (max. temp).
4. This parameter is guaranteed but not production tested.
Tests Circuits For All Outputs(1)
Pulse
Generator D.U.T.
V
IN
R
T
V
OUT
C
L
500
500
50pF
V
CC
7.0V
sretemaraPnoitpircseDsnoitidnoC
)1(
/T5082/T508
T608
/TA5082/TA508
TA608
/TB5082/TB508
TB608
/TC5082/TC508
TC608
stinU
.moCmoC.moCmoC
.niM.xaM.niM.xaM.niM.xaM.niM.xaM
t
HLP
t
LHP
yaleDnoitagaporP
NI
A
otAO
N
,
NI
B
otBO
N
Fp05=LC
005=LR
5.15.65.18.55.10.55.15.4
sn
t
HZP
t
LZP
emiTelbanEtuptuO
EO
A
otAO
N
,
EO
B
otBO
N
5.10.85.10.85.15.85.12.6
t
ZHP
t
ZLP
emiTelbasiDtuptuO
)4(
EO
A
otAO
N
,
EO
B
otBO
N
5.10.75.10.75.10.65.10.5
t
(WEKSo)
)3(
stuptuoowtxwtwekS
egakcapemasfo
)noitisnartemas(
7.0 5.04.04.0
t
(WEKSp)
)3(
etisoppoxwtwekS
t(snoitisnart
LHP
t-
HLP
)
tuptuoemasfo
0.1 7.05.05.0
t
(WEKSt)
)3(
stuptuoowtxwtwekS
taegakcaptnereffidfo
erutarepmetemas
)noitisnartemas(
5.1 0.10.1 0.1
Test Switch
Open Drain
Disable LOW Closed
Enable LOW
All Other Inputs Open
Definitions:
CL = Load capacitance: includes jig and probe capacitance.
RT = Termination resistance: should be equal to ZOUT of the
Pulse Generator.
Switch Position
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PI49FCT805T
PI49FCT2805T/PI49FCT806T
Fast CMOS Buffer/Clock Driver
Switching Waveforms
Output Skew  tSK(o)
Input
t
PLHx
3V
1.5V
0V
Ox
V
OH
1.5V
V
OL
t
PHLx
t
SK(o)
Oy
V
OH
1.5V
V
OL
t
SK(o)
t
PLHy
t
PHLy
t
SK(o)
=|t
PLHy
t
PLHx
|or|t
PHLy
t
PHLx
|
Pulse Skew  tSK(p)
Package Skew  tSK(t)
Propagation Delay
Input
t
PLH
3V
1.5V
0V
Output
V
OH
1.5V
V
OL
t
PHL
Enable and Disable Times
t
PZL
OE 1.5V
0V
3V
1.5V
3.5V
0V
1.5V
t
PLZ
V
OL
3.5V
0V
t
PZH
t
PHZ
0.3V
0.3V
Output
Normally
Low
Output
Normally
High
Switch
Closed
Switch
Open
V
OH
Enable Disable
Input
t
PLH
3V
1.5V
0V
Output
V
OH
1.5V
V
OL
t
PHL
t
SK(p)
=|t
PHL
t
PLH
|
Input
t
PLH1
3V
1.5V
0V
Package 1
Output
V
OH
1.5V
V
OL
t
PHL1
t
SK(t)
Package 2
Output
V
OH
1.5V
V
OL
t
SK(t)
t
PLH2
t
PHL2
t
SK(t)
=|t
PLH2
t
PLH1
|or|t
PHL2
t
PHL1
|
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PI49FCT805T
PI49FCT2805T/PI49FCT806T
Fast CMOS Buffer/Clock Driver
20-Pin 209-Mil SSOP (H)
.272
.295
.078
.002
SEATING
PLANE
.0098
Max.
.0256
BSC
.022
.037
.004
.009
.291
.322
1
20
.197
.220
0.25
X.XX
X.XX DENOTES DIMENSIONS
IN MILLIMETERS
0.050
7.40
8.20
0.55
0.95
0.09
0.25
5.00
5.60
2.00
6.90
7.50
0.65
Max
Min
20-Pin 150-Mil QSOP (Q)
.337
.344
.053
.069
.004
.010
SEATING
PLANE
.025
BSC
.007
.010
.228
.244
.150
.157
1
20
.016
.050
X.XX
X.XX DENOTES DIMENSIONS
IN MILLIMETERS
0.635
8.56
8.74
1.35
1.75
5.79
6.19
0.41
1.27
0.101
0.254
.008
.012 0.203
0.305
3.81
3.99
0.178
0.254
.058
1.47
.015 x 45˚
0.38
REF
Detail A
Detail A
.008
0.20
MIN.
Guage Plane
.010
0.254
.041
1.04
REF
.016
.035
0.41
0.89
0˚-6˚
.008
.013
0.20
0.33
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PI49FCT805T
PI49FCT2805T/PI49FCT806T
Fast CMOS Buffer/Clock Driver
Pericom Semiconductor Corporation
2380 Bering Drive San Jose, CA 95131 • 1-800-435-2336 Fax (408) 435-1100 • http://www.pericom.com
edoCgniredrOedoCgnikraM
pTx508TCF94IPxpT508TCF94IP
pTx5082TCF94IPxpT5082TCF94IP
pTx608TCF94IPxpT608TCF94IP
Ordering Information
Note: x = Speed Grades: blank, A, B, C.
p = Package Type:
H = 209-mil SSOP
Q = 150-mil QSOP
S = 300-mil SOIC
Example:
PI49FCT2805ATH = A grade, H pkg marked as PI49FCT2805THA
20-Pin 300-Mil SOIC (S)
SEATING
PLANE
.050
BSC
1
20
0-8˚
.2914
.2992
X.XX
X.XX DENOTES CONTROLLING
DIMENSIONS IN MILLIMETERS
7.40
7.60
.496
.511
12.60
12.99
1.27
.0926
.1043 2.35
2.65 .394
.419
10.00
10.65
.0040
.0118 0.10
0.30
.013
.020
0.33
0.51
.010
.029 0.254
0.737
.0091
.0125 0.23
0.32
0.41
1.27 .016
.050
x 45˚
.020
.030 0.508
0.762 REF