SN75061N Datasheet, PDF (1/13 Pages) Texas Instruments – DRIVER/RECEIVER PAIR WITH SQUELCH

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• IEEE 802.3 1BASE5 Driver and Receiver
• On-Chip Receiver Squelch With Adjustable
Threshold
• Adjustable Squelch Delay
• Direct TTL-Level Squelch Output
• Squelch Circuit Allows for External Noise
Filtering
• Two Driver-Enable Options
• On-Chip Start-of-Idle Detection and Disable
• Driver Provides 2-V Minimum into a 50-Ω
Differential Load Allowing for Use With
Doubly-Terminated Lines and Multipoint
Architectures
• On-Chip Driver Slew-Rate Control for Very
Closely Matched Output Rise and Fall
Times
SN75061
DRIVER/RECEIVER PAIR WITH SQUELCH
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SLLS026C − JANUARY 1987 − REVISED JULY 1990
N PACKAGE
(TOP VIEW)
DRDLAJ 1
DRO + 2
DRO − 3
SQDLAJ 4
RXI + ⁵
RXI − ⁶
SQTHAJ ⁷
GND ⁸
16 V_CC
15 DATEN
14 DRI
13 DLEN
12 RXO
11 _SQO
10 _SQDLI
9 _SQRXO
DRIVER
INPUTS
OUTPUTS
DRI DATEN DLEN DRO + DRO −
L
L
X
L
H
H
L
X
H
L
X
H
H
Z
Z
H
H
L
H†
L†
L
H
L
L‡
H‡
Function Tables
CONDITION
No active signal ^¶
Active signal ^¶
RECEIVER§
INPUTS
RXI + RXI −
X
X
L
H
H
L
OUTPUTS
RXO SQO
H
H
L
L
H
L
† _{This condition is valid during the time period set by DRDLAJ following a rising transition on DRI. Following this, when a}
subsequent positive transition does not occur on DRI, the outputs go to the high-impedance state.
‡ _{This condition is valid when it occurs within the enable time set by DRDLAJ after a rising transition on DRI. Otherwise, the}
outputs are in the high-impedance state.
§ _{Pins 9 and 10 are tied together.}
¶ _{An active signal is one that has an amplitude greater than the threshold level set by SQTHAJ.}
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright  1990, Texas Instruments Incorporated
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
• POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
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