74LVT2245_08 Datasheet, PDF (1/9 Pages) Fairchild Semiconductor – Low Voltage Octal Bidirectional Transceiver with 3-STATE Inputs/Outputs and 25 B Port Outputs

January 2008
74LVT2245, 74LVTH2245
Low Voltage Octal Bidirectional Transceiver with
3-STATE Inputs/Outputs and 25Ω Series Resistors in the
B Port Outputs
Features
■ Input and output interface capability to systems at
5V V_CC
■ Equivalent 25Ω series resistor on B Port outputs
■ Bushold data inputs eliminate the need for external
pull-up resistors to hold unused inputs (74LVTH2245),
also available without bushold feature (74LVT2245)
■ Live insertion/extraction permitted
■ Power Up/Down high impedance provides glitch-free
bus loading
■ Outputs source/sink –12mA/+12mA on B Port,
–32mA/+64mA on A Port
■ Latch-up performance exceeds 500mA
■ ESD performance:
– Human-body model > 2000V
– Machine model > 200V
– Charged-device model > 1000V
General Description
The LVT2245 and LVTH2245 contain eight non-inverting
bidirectional buffers with 3-STATE outputs and are
intended for bus-oriented applications. The Transmit/
Receive (T/R) input determines the direction of data flow
through the bidirectional transceiver. Transmit (active-
HIGH) enables data from A Ports to B Ports; Receive
(active-LOW) enables data from B Ports to A Ports. The
Output Enable input, when HIGH, disables both A and B
Ports by placing them in a high impedance state. The
equivalent 25Ω-series resistor in the B Port helps reduce
output overshoot and undershoot.
The LVTH2245 data inputs include bushold, eliminating
the need for external pull-up resistors to hold unused
inputs.
These transceivers are designed for low voltage (3.3V)
V_CC applications, but with the capability to provide a TTL
interface to a 5V environment. The LVT2245 and
LVTH2245 are fabricated with an advanced BiCMOS
technology to achieve high speed operation similar to 5V
ABT while maintaining low power dissipation.
Ordering Information
Order Number
74LVT2245WM
74LVT2245SJ
74LVT2245MTC
74LVTH2245WM
74LVTH2245SJ
74LVTH2245MTC
Package
Number
M20B
M20D
MTC20
M20B
M20D
MTC20
Package Description
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm
Wide
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm
Wide
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering number.
All packages are lead free per JEDEC: J-STD-020B standard.
©1999 Fairchild Semiconductor Corporation
74LVT2245, 74LVTH2245 Rev. 1.5.0
www.fairchildsemi.com