SN65EPT21 Datasheet, PDF (1/10 Pages) Texas Instruments – 3.3-V Differential PECL/LVDS to TTL Translator

SN65EPT21
www.ti.com
3.3-V Differential PECL/LVDS to TTL Translator
Check for Samples: SN65EPT21
SLLS970 – NOVEMBER 2009
FEATURES
1
• 1 ns Propagation Delay
• F_max > 300MHz
• Operating Range: V_CC = 3.0 V to 3.6 V with
GND = 0 V
• 24-mA TTL Output
• Built-In Temperature Compensation
• Drop-In Compatible to the MC10EPT21,
MC100EPT21
APPLICATIONS
• Data and Clock Transmission Over Backplane
• Signaling Level Conversion for Clock or Data
PIN ASSIGNMENT(Add pullup on BOTH
inputs)
NC 1
D2
D or DGK PACKAGE
(TOP VIEW)
+
8 V_CC
+
LVTTL
7Q
+
D3
LVPECL
6 NC
DESCRIPTION
V_BB 4
5 GND
The SN65EPT21 is a differential PECL-to-TTL
translator. It operates on +3.3 V supply and ground
only. The device includes circuitry to maintain inputs
Table 1. Pin Descriptions
at Vcc/2 when left open.
PIN
FUNCTION
The V_BB pin is a reference voltage output for the
Q
device. When the device is used in single-ended
mode, the unused input should be tied to V_BB. This
reference voltage can also be used to bias the input
D, D
V_CC
LVTTL/LVCMOS Output
Differential LVPECL/LVDS/CML Input
Positive Supply
when it is ac coupled. When it is used, place a
V_BB
Output Reference Voltage
0.01μF decoupling capacitor between V_CC and V_BB.
GND
Also limit the sink/source current to < 0.5 mA to V_BB.
NC
Leave V_BB open when it is not used.
EP
Ground
No Connect
(DFN8 only) Thermal exposed pad must be
The SN65EPT21 is housed in an industry standard
SOIC-8 package and is also available in an optional
TSSOP-8 package.
ORDERING INFORMATION⁽¹⁾
connected to a sufficient thermal conduit.
Electrically connect to the most negative supply
(GND) or leave unconnected, floating open.
PART NUMBER
PART MARKING
PACKAGE
LEAD FINISH
SN65EPT21D/DR
EPT21
SOIC
NiPdAu
SN65EPT21DGK/DGKR
SSSI
MSOP
NiPdAu
(1) 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