RI-TRP-R4FF Datasheet, PDF (1/5 Pages) Texas Instruments – CARD TRANSPONDER

Micrel, Inc.
FEATURES
s 3.3V power supply
s 2.0ns typical propagation delay
s Low power
s Differential LVPECL inputs
s 24mA TTL outputs
s Flow-through pinouts
s Available in 8-pin SOIC package
3.3V DIFFERENTIAL
LVPECL-to-LVTTL
TRANSLATOR
Precision Edge^®
Precisio_Sn^SYY1E₀₁d_00EEg_LLe_TT^®_2211LL
SY10ELT21L
SY100ELT21L
Precision Edge^®
DESCRIPTION
The SY10/100ELT21L are single differential LVPECL-
to-LVTTL translators using a single +3.3V power supply.
Because LVPECL (Low Voltage Positive ECL) levels are
used, only +3.3V and ground are required. The small
outline 8-lead SOIC package and low skew single gate
design make the ELT21L ideal for applications that require
the translation of a clock or data signal where minimal
space, low power, and low cost are critical.
V_BB allows a differential, single-ended, or AC-coupled
interface to the device. If used, the V_BB output should be
bypassed to V_CC with 0.01µF capacitor.
Under open input conditions, the /D will be biased at a
V_CC/2 voltage level and the D input will be pulled to
ground. This condition will force the Q output low to
provide added stability.
The ELT21L is available in both ECL standards: the
10ELT is compatible with positive ECL 10H logic levels,
while the 100ELT is compatible with positive ECL 100K
logic levels.
PIN NAMES
Pin
Q
D, /D
V_CC
V_BB
GND
Function
TTL Output
Differential LVPECL Inputs
+3.3V Supply
Reference Output
Ground
Precision Edge is a registered trademark of Micrel, Inc.
M9999-031506
[e-mail] or [phone]
1
Rev.: D Amendment: /0
Issue Date: March 2006