SN65ELT21是TI公司的一款PECLPHY产品，SN65ELT21是5V PECL 至 TTL 转换器，本页介绍了SN65ELT21的产品说明、应用、特性等，并给出了与SN65ELT21相关的TI元器件型号供参考。
SN65ELT21 - 5V PECL 至 TTL 转换器 - PECLPHY - LVDS/M-LVDS/ECL/CML - TI公司（Texas Instruments，德州仪器）
The SN65ELT21 is a differential PECL-to-TTL translator. It operates on +5-V supply and ground only. The device includes circuitry to maintain Q to a low logic level when inputs are in an open condition or < 1.3 V.
The VBB pin is a reference voltage output for the device. When the device is used in single-ended mode, the unused input should be tied to VBB. This reference voltage can also be used to bias the input when it is ac coupled. When it is used, place a 0.01µF decoupling capacitor between VCC and VBB. Also limit the sink/source current to < 0.5 mA to VBB. Leave VBB open when it is not used.
The SN65ELT21 is housed in an industry standard SOIC-8 package and is also available in an optional TSSOP-8 package.
- 3ns (TYP) Propagation Delay
- Operating Range: VCC = 4.2 V to 5.7 V with GND = 0 V
- 24-mA TTL Output
- Deterministic Output Value for Open Input Conditions or When Inputs < 1.3 V
- Built-In Temperature Compensation
- Drop-In Compatible to the MC10ELT21, MC100ELT21
- APPLICATIONS
- Data and Clock Transmission Over Backplane
- Signaling Level Conversion for Clock or Data
