Document
SN65ELT23
www.ti.com....................................................................................................................................................................................................... SLLS925 – JUNE 2009
5-V Dual Differential PECL Buffer-to-TTL Translator
FEATURES
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• Dual 5-V Differential PECL-to-TTL Buffer • 24-mA TTL Ouputs • Operating Range
– PECL VCC = 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 VCC
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
VCC
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.
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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
SN65ELT23
SLLS925 – JUNE 2009....................................................................................................................................................................................................... www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
ABSOLUTE MAXIMUM RATINGS(1)
PARAMETER Absolute supply voltage, VCC Absolute input voltage, VI Output current
Operating temperature range Storage temperature range
CONDITIONS
GND = 0 and VI ≤ VCC Continuous Surge
VALUE 6
0 to 6 50 100
–40 to 85 –65 to 150
UNIT V V mA
°C °C
(1) Stresses beyond those listed under ab.