PI74FCT16245T
PI74FCT162245T
Fast CMOS 16-Bit Bidirectional Transceivers
Description
Features
PericomSemiconductor’sPI74FCT16245TandPI74FCT162245T
are16-bitbidirectionaltransceiversdesignedforasynchronoustwo-
way communication between data buses. The direction control
input pin (xDIR) determines the direction of data flow through the
bidirectional transceiver. The Direction and Ouput Enable controls
are designed to operate these devices as either two independent 8-
bit transceivers or one 16-bit transceiver. The output enable (OE)
input, when HIGH, disables both A and B ports by placing them
in Hi-Z condition.
Common Features
• PI74FCT16245T and PI74FCT162245T are high-speed, low-
power devices with high-current drive
• V = 5V ±10%
CC
• Hysteresis on all inputs
PI74FCT16245T Features
• High output drive: I = –32mA; I = 64mA
OH
OL
• Power off disable outputs permit “live insertion”
• Typical V (Output Ground Bounce)
OLP
The PI74FCT16245T output buffers are designed with a power off
disable allowing “live insertion” of boards when used as backplane
drivers.
< 1.0V at V = 5V, T = 25°C
CC
A
• Packaging (Pb-free & Green available):
– 48-pin 240-mil wide plastic TSSOP (A)
– 48-pin 300-mil wide plastic SSOP (V)
The PI74FCT162245T 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.
– 48-pin 300-mil wide plastic TVSOP (K)
PI74FCT162245T Features
• Balanced output drivers: ±24mA
• Reduced system switching noise
• Typical V
(Output Ground Bounce)
OLP
< 0.6V at V = 5V, T = 25°C
CC
A
• Packaging (Pb-free & Green available):
– 48-pin 240-mil wide plastic TSSOP (A)
– 48-pin 300-mil wide plastic SSOP (V)
– 48-pin 300-mil wide plastic TVSOP (K)
Block Diagram
1DIR
2DIR
1OE
2OE
1A0
1A1
1A2
1A3
1A4
1A5
1A6
1A7
2A0
2B0
2A1
2B1
2A2
2B2
2A3
2B3
2A4
2B4
2A5
2B5
2A6
2B6
2A7
2B7
1B0
1B1
1B2
1B3
1B4
1B5
1B6
1B7
PS2032I
06/20/06
06-0218
1