PI49FCT3805/PI49FCT3806
3.3V Fast CMOS Buffer/Clock Driver
Features Description
3.3V version of PI49FCT805/806 Pericom Semiconductors PI49FCT3805 is a 3.3V non-inverting
clock driver and the PI49FCT3806 is a 3.3V inverting clock
Extremely low output skew: 0.5ns
driver designed with two independent groups of buffers. These
Monitor ouput pin
buffers have 3-state Output Enable inputs (active LOW) with a
Clock busing wih 3-state control
1-in, 5-out configuration per group. Each clock driver consist of
two banks of drivers, driving five outputs each from a standard
TTL input and CMOS output compatible
TTL compatible CMOS input.
Industrial operation at 40C to 85C
Extremely low static power (1mW, typ.)
Hysteresis on all inputs
Packaging (Pb-free & Green available):
20-pin 300-mil wide SOIC (S)
20-pin 150-mil wide QSOP (Q)
20-pin 209-mil wide SSOP (H)
PI49FCT3805 Block Diagram PI49FCT3806 Block Diagram
OE
A
OE
A
5
5
OA
IN 0-4
OA A
IN 0-4
A
5
5
OB
OB IN 0-4
IN 0-4 B
B
OE OE
B B
MON MON
www.pericom.com PS7007J 02/16/10
1
10-0117PI49FCT3805/PI49FCT3806
3.3V Fast CMOS Buffer/Clock Driver
Pin Description
Pin Name Description
OE , OE 3-State Output Enable Inputs (Active LOW)
A B
IN , IN Clock Inputs
A B
A , B Clock Outputs
O N O N
MON Monitor Output
GND Ground
V Power
CC
(1)
PI49FCT3805 Pin Configuration
PI49FCT3805 Truth Table
Inputs Outputs
V V
A 1 20 V
CCA CCCCB
A B OE , OE IN , IN A , B MON
GND 2 19 B9 A B A B O N O N
O 0 O 0
A B
B0 3 18 B8
O 1 O 1
L L L L
A B
V 4 17 GND
OCC2 O 2
L H H H
GND GND
B1 5 16 B7
A B
A B H L Z L
GND 6 15 V
O 3 OCC3
A B
B2 7 14 B6
O 4 O 4
H H Z H
Note:
GND MON
V 8 13 GND
CCQ
1. H = High Voltage Level, L = Low Voltage Level
OE OE
B3 9 12 B5
A B
Z = High Impedance
IN IN
GND 10 11 B4
A B
(1)
PI49FCT3806 Pin Configuration
PI49FCT3806 Truth Table
Inputs Outputs
V V
CCA CCB
A 1 20 V
CC
OA OB OE , OE IN , IN OA , OB MON
0 0 A B A B N N
GND 2 19 B9
OA OB
1 1
B0 3 18 B8
L L H H
OA OB
2 2
VCC 4 17 GND
L H L L
GND GND
A B
B1 5 16 B7
OA OB
GND3 6 15 V 3 H L Z H
CC
OA OB
B42 7 14 B6 4
H H Z L
Note:
GND MON
V Q 8 13 GND
CC
1. H = High Voltage Level, L = Low Voltage Level, Z = High Impedance
OE OE
BA3 9 12 B5 B
IN IN
GNDA 10 11 B4 B
Capacitance (T = 25C, f = 1 MHz)
A
(1)
Parameters Description Test Conditions Typ Max. Units
C Input Capacitance V = 0V 3.0 6.0
IN IN
pF
C Output Capacitance V = 0V 6.0 8.0
OUT OUT
Note:
1. Th is parameter is determined by device characterization but is not production tested.
www.pericom.com PS7007J 02/16/10
2
10-0117