Level One Cross Reference
Level One
LXT300Z
LXT301Z
LXT304A
Cirrus
CS61577
CS61577
CS61575
Hardware Compatible
Yes
Yes
Yes
Software Compatible
Yes
Yes
Yes
Same Transformer
Yes
Yes
Application dependant
Tx low (C) vs HiZ (L) when no TCLK
Comments
6Hz knee (C) vs 3Hz (L)
New Design-in Changes
None known
None known
CS61575 (Need new transformers or remove
R3&R4). Review Data Sheet for Specifics
CS61535A (Need to remove the 100kohm
resister tied to 5v supply at pin23)
LXT305A
CS61535A
Yes
Yes
Yes
(C) has wider RCLK duty cycle
LXT307
LXT307
LXT310
LXT318
LXT332
CS61577
CS61304A
CS61581
CS61581
CS61584A
Yes
Yes
Yes
Yes
Yes with minor changes
(specifically changing 5V supply
with a 3.3V supply)
Yes
Yes
Yes
Yes
No
Application dependant
Yes
Yes
Yes
Yes
(C) E1/T1 VS. (L) E1,no Jitter attenuation, AMI only
(C) E1/T1 VS. (L) E1,no Jitter attenuation, AMI only
T1/E1 LH/SH (C) vs T1 LH (L)
Need different turns.
CS61575 (Need new transformers)
None known
T1/E1 LH/SH (C) vs E1 LH (L). Software compatible in None known
in Host mode only
3.3/5V, T1/E1, JTAG, Arbitrary Waveform Generator,
Match Impedance Transmitters, Excessive Zero
Detection, Individual channel power down, Local
Loopback 2 (C) vs 5V only, T1/E1, QRSS
Generator, DFM, high freq output clock (L)
T1/E1 LH/SH (C) vs T1/E1 SH (L)
None known
LXT350
CS61581
Yes with minor changes
(specifically changing 5V supply
with a 3.3V supply)
Yes with minor changes
(specifically changing 5V supply
with a 3.3V supply)
Yes with minor changes
(specifically changing 5V supply
with a 3.3V supply)
Yes with minor changes
(specifically changing 5V supply
with a 3.3V supply)
Yes with minor changes
(specifically changing 5V supply
with a 3.3V supply)
Yes with minor changes
(specifically changing 5V supply
with a 3.3V supply)
No
Yes
None known
LXT359
CS61581
No
Yes
T1/E1 LH/SH (C) vs T1 LH/SH (L)
None known
LXT360
CS61581
No
Yes
T1/E1 LH/SH (C) vs T1/E1 LH/SH (L); TX Impedance
matching, AWG(C); 40% lower power(L)
15% lower power. Matched impedance output(fewer
external components. True 3.3V operation.(C)
Needs 5V for Transmitter to maintain return loss (L)
15% lower power, lower return loss
Remove external resistors on TX
line(R3/R4)
CS61581, CS61583, CS61584A
LXT38x
CS6158x
Yes
Application dependant
LTX381
CS61884
N/A
No
None known
LTX380
CS61880
Yes
No
15% lower power, AWG
None known
LXT384
CS61884
Yes with minor changes
(specifically changing 5V supply
with a 3.3V supply)
Yes
Yes
Yes
15% lower power, AWG, internal imp matching,
customizable pulses,IEEE 1194.1 Only, 3.3V(no 5V
supply needed) (C) vs. 5V needed to maintain
return loss, (L)
None known
LXT970
CS8952
Yes
NA
Need re-routing of signals but same footprint. AN127 CS8952 (8952T being not supported)