900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf






Exar Corporation

XR16L2450 Datasheet Preview

XR16L2450 Datasheet

2.25V TO 5.5V DUART

No Preview Available !

xr
OCTOBER 2004
GENERAL DESCRIPTION
The XR16L2450 (L2450) is a dual universal asyn-
chronous receiver and transmitter (UART). The
XR16L2450 is an improved version of the
ST16C2450 with lower operating voltage and 5 volt
tolerant inputs. The L2450 provides enhanced UART
functions, a modem control interface and data rates
up to 1.5 Mbps. Onboard status registers provide the
user with error indications and operational status. In-
dependent programmable baud rate generators are
provided to select transmit and receive clock rates up
to 1.5 Mbps. An internal loopback capability allows
onboard diagnostics. The L2450 is available in a 44-
pin PLCC and 48-pin TQFP packages. The L2450 is
fabricated in an advanced CMOS process capable of
operating from 2.25 volt to 5.5 volt power supply with
5 volt tolerant inputs.
APPLICATIONS
Portable Appliances
Telecommunication Network Routers
Ethernet Network Routers
Cellular Data Devices
Factory Automation and Process Controls
FIGURE 1. XR16L2450 BLOCK DIAGRAM
XR16L2450
2.25V TO 5.5V DUART
FEATURES
REV. 1.1.0
2.25 to 5.5 Volt Operation
5 Volt Tolerant Inputs
Pin-to-pin compatible to Exar’s ST16C2450,
ST16C2550, XR16L2550, XR16L2750 and
XR16C2850
Pin-to-pin compatible to TI’s TL16C752B on the 48-
TQFP package
2 independent UART channels
Up to 1.5 Mbps data rate with a 24 MHz crystal
oscillator or external clock frequency
1 byte Transmit FIFO
1 byte Receive FIFO with error tags
Status report registers
Modem control signals (CTS#, RTS#, DSR#,
DTR#, RI#, CD#)
Programmable character lengths (5, 6, 7, 8)
with even, odd, or no parity
Crystal oscillator or external clock input
TTL compatible inputs, outputs
Industrial temperature ranges
48-TQFP and 44-PLCC packages
A2:A0
D7:D0
IOR#
IOW#
CSA#
CSB#
INTA
INTB
Reset
8-bit Data
Bus
Interface
*5V Tolerant inputs
UART Channel A
UART
Regs
THR
RHR
BRG
Modem I/Os
UART Channel B
(same as Channel A)
Crystal Osc/Buffer
2.25 to 5.5 Volt VCC
TXA
RXA
RTSA#, CTSA#,
DTRA#, DSRA#,
CDA#, RIA#, OP2A#
TXB
RXB
RTSB#, CTSB#,
DTRB#, DSRB#,
CDB#, RIB#, OP2B#
XTAL1
XTAL2
Exar Corporation 48720 Kato Road, Fremont CA, 94538 (510) 668-7000 FAX (510) 668-7017 www.exar.com




Exar Corporation

XR16L2450 Datasheet Preview

XR16L2450 Datasheet

2.25V TO 5.5V DUART

No Preview Available !

XR16L2450
2.25V TO 5.5V DUART
FIGURE 2. PIN OUT ASSIGNMENT
xr
REV. 1.1.0
D5 1
D6 2
D7 3
RXB 4
RXA 5
NC 6
TXA 7
TXB 8
OP2B# 9
CSA# 10
CSB# 11
NC 12
XR16L2450
48-pin TQFP
36 RESET
35 DTRB#
34 DTRA#
33 RTSA#
32 OP2A#
31 NC
30 INTA
29 INTB
28 A0
27 A1
26 A2
25 NC
D5 7
D6 8
D7 9
RXB 10
RXA 11
NC 12
TXA 13
TXB 14
OP2B# 15
CSA# 16
CSB# 17
XR16L2450
44-pin PLCC
39 RESET
38 DTRB#
37 DTRA#
36 RTSA#
35 OP2A#
34 NC
33 INTA
32 INTB
31 A0
30 A1
29 A2
Device
ORDERING INFORMATION
PART NUMBER
XR16L2450IJ
PACKAGE
44-Lead PLCC
XR16L2450IM
48-Lead TQFP
OPERATING TEMPERATURE RANGE
-40°C to +85°C
-40°C to +85°C
DEVICE STATUS
Active
Active
2


Part Number XR16L2450
Description 2.25V TO 5.5V DUART
Maker Exar Corporation
Total Page 30 Pages
PDF Download

XR16L2450 Datasheet PDF

View PDF for Mobile








Similar Datasheet

1 XR16L2450 2.25V TO 5.5V DUART
Exar Corporation





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy