SN65ELT23 Datasheet, PDF (1/11 Pages) Texas Instruments – 5-V Dual Differential PECL Buffer-to-TTL Translator

SN65ELT23
www.ti.com....................................................................................................................................................................................................... SLLS925 – JUNE 2009
5-V Dual Differential PECL Buffer-to-TTL Translator
FEATURES
1
• Dual 5-V Differential PECL-to-TTL Buffer
• 24-mA TTL Ouputs
• Operating Range
– PECL V_CC = 4.75 V to 5.25 V with
GND = 0 V
• Support for Clock Frequencies of 250 MHz
(TYP)
• 3.5-ns Typical Propagation Delay
• Output Default Low with Inputs Left Open or
<1.3 V
• Internal Input 50-kΩ Pull-Down Resistor
• Built-In Temperature Compensation
• Drop-In Compatible to the MC100ELT23
PIN ASSIGNMENT
D or DGK PACKAGE
(TOP VIEW)
D₀ 1
D₀ 2
D₁ 3
PECL
D₁ 4
8 ^V_CC
7 Q₀
TTL
6 _Q1
5 _GND
APPLICATIONS
• Data and Clock Transmission Over Backplane
• Signaling Level Conversion for Clock or Data
Table 1. Pin Descriptions
PIN
D₀, D₀, D₁, D₁
Q₀, Q₁
PECL inputs
TTL outputs
FUNCTION
DESCRIPTION
V_CC
Positive supply
GND
The SN65ELT23 is a low power dual PECL-to-TTL
Ground
translator device. The device includes circuitry to
maintain a known logic low level when inputs are in
an open condition. The SN65ELT23 is housed in an
industry standard SOIC-8 package and is also
available in an optional TSSOP-8 package.
ORDERING INFORMATION⁽¹⁾⁽²⁾
PART NUMBER
SN65ELT23D
SN65ELT23DGK
PART MARKING
ELT23
SIKI
PACKAGE
SOIC
MSOP
LEAD FINISH
NiPdAu
NiPdAu
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
(2) Leaded device options are not initially available; contact a sales representative for further details.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2009, Texas Instruments Incorporated