74LVTH16652 Datasheet, PDF (1/9 Pages) Fairchild Semiconductor – Low Voltage 16-Bit Transceiver/Register with 3-STATE Outputs

January 2000
Revised January 2000
74LVTH16652
Low Voltage 16-Bit Transceiver/Register
with 3-STATE Outputs
General Description
The LVTH16652 consists of sixteen bus transceiver circuits
with D-type flip-flops, and control circuitry arranged for mul-
tiplexed transmission of data directly from the input bus or
from the internal registers. Each byte has separate control
inputs which can be shorted together for full 16-bit opera-
tion. Data on the A or B bus will be clocked into the regis-
ters as the appropriate clock pin goes to the HIGH logic
level. Output Enable pins (OEAB, OEBA) are provided to
control the transceiver function (see Functional Descrip-
tion).
The LVTH16652 data inputs include bushold, eliminating
the need for external pull-up resistors to hold unused
inputs.
The transceivers are designed for low-voltage (3.3V) V_CC
applications, but with the capability to provide a TTL inter-
face to a 5V environment. The LVTH16652 is fabricated
with an advanced BiCMOS technology to achieve high
speed operation similar to 5V ABT while maintaining low
power dissipation.
Features
s Input and output interface capability to systems at
5V V_CC
s Bushold data inputs eliminate the need for external
pull-up resistors to hold unused inputs
s Live insertion/extraction permitted
s Power Up/Down high impedance provides glitch-free
bus loading
s Outputs source/sink −32 mA/+64 mA
s Functionally compatible with the 74 series 16652
s Latch-up performance exceeds 500 mA
Ordering Code:
Order Number Package Number
Package Description
74LVTH16652MEA
MS56A
56-Lead Shrink Small Outline Package (SSOP), JEDEC MO-118, 0.300 Wide
74LVTH16652MTD
MTD56
56-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
Devices also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
© 2000 Fairchild Semiconductor Corporation DS012024
www.fairchildsemi.com