LMX2346 National Semiconductor Corporation, LMX2346 Datasheet - Page 3

• Manufacturer Part Number: LMX2346
• Description: Pllatinum? Frequency Synthesizer For Rf Personal Communications
• Manufacturer: National Semiconductor Corporation

Pin Descriptions
Pin Name
CLOCK
DATA
F
F
CE
LE
INB
IN
16-Pin
CSP
10
11
Pin Number
5
6
8
9
TSSOP
16-Pin
(Continued)
10
11
12
7
8
9
I/O
I
I
I
I
I
I
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.
High impedance CMOS Clock input. Data
is clocked in on the rising edge, into the
18-bit shift register.
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
input.
CC
if unused. High impedance CMOS
Description
3
I/O Circuit Configuration
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