LMX2346TM datasheet(3/27 Pages) NSC

Part #	LMX2346TM

Description	PLLatinum??Frequency Synthesizer for RF Personal Communications

PDF	27 Pages

Scroll/Zoom	100%

Manufacturer	NSC [National Semiconductor (TI)]

Direct Link	http://www.national.com

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3 / 27 page

Pin Descriptions (Continued)

Pin Name

Pin Number

I/O

Description

I/O Circuit Configuration

16-Pin

CSP

16-Pin

TSSOP

INB

RF prescaler complementary input. For

single ended operation, this pin should be

AC grounded. The LMX2346/7 can be

driven differentially when a bypass

capacitor is omitted.

RF PLL prescaler input. Small signal

input from the VCO.

CLOCK

High impedance CMOS Clock input. Data

is clocked in on the rising edge, into the

18-bit shift register.

DATA

Binary serial data input. Data entered

MSB first. LSB is control bit. High

impedance CMOS input.

Latch Enable input. When Latch Enable

transitions HIGH, data stored in the 18-bit

shift register is loaded into one of the 2

control registers, based on the address

bit. High impendance CMOS input.

Chip Enable input. Provides logical

power-down control of the device. Pull-up

to V

CC if unused. High impedance CMOS

input.

LMX2346TM Datasheet(PDF) 3 Page - National Semiconductor (TI)