© 2001 Fairchild Semiconductor Corporation DS500483 www.fairchildsemi.com
May 2001
Revised May 2001
GTLP10B320 10-Bit LVTTL/GTLP Transceiver with Split LVTTL Port and Feedback Path
GTLP10B320
10-Bit LVTTL/GTLP Transceiver
with Split LVTTL Port and Feedback Path
General Description
The GTLP10B320 is a 10-bit Universal bus driver and
receiver, with separate LVTTL inputs and outputs and a
feedback path for diagnostics, that provides LVTTL to
GTLP signal level translation. High speed backplane oper-
ation is a direct result of GTLP’s reduced output swing
(
<1V), reduced input threshold levels and output edge rate
control. The edge rate control minimizes bus settling time.
GTLP is a Fairchild Semiconductor derivative of the
Gunning Transistor logic (GTL) JEDEC standard JESD8-3.
Fairchild’s GTLP has internal edge-rate control and is pro-
cess, voltage and temperature (PVT) compensated. Its
function is similar to BTL and GTL but with different output
levels and receiver threshold. GTLP output low level is typ-
ically less than 0.5V, the output level high is 1.5V and the
receiver threshold is 1.0V.
Features
■ Bidirectional interface between GTLP and LVTTL logic
levels
■ Variable edge rate control pin to select desired edge rate
on GTLP port (V
ERC
)
■ V
REF
pin provides external supply reference voltage for
receiver threshold adjustibility
■ Split LVTTL inputs and outputs
■ Special PVT compensation circuitry to provide consis-
tent performance over variations of process, supply volt-
age and temperature
■ A feedback path for control and diagnostics monitoring
■ TTL compatible driver and control inputs
■ Designed using Fairchild advanced BiCMOS technology
■ Bushold data inputs on A port to eliminate the need for
external pull-up resistors for unused inputs
■ Power up/down and power off high impedance for live
insertion
■ Open drain on GTLP to support wired-or connection
■ Flow through pinout optimizes PCB layout
■ A Port source/sink
−24mA/+24mA
■ B Port sink
+50mA
Ordering Code:
Device is also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Order Number Package Number Package Description
GTLP10B320MTD MTD56 56-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
