DS36954V National Semiconductor, DS36954V Datasheet - Page 7

• Manufacturer Part Number: DS36954V
• Description: IC TRANSCEIVER QUAD DIFF 20-PLCC
• Manufacturer: National Semiconductor
• Type: Transceiverr

Specifications of DS36954V

• Number Of Drivers/receivers: 4/4
• Protocol: RS485
• Voltage - Supply: 4.75 V ~ 5.25 V
• Mounting Type: Surface Mount
• Package / Case: 20-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: *DS36954V

Parameter Measurement Information
T
T
Note 12: The input pulse is supplied by a generator having the following characteristics: f = 1.0 MHz, 50% duty cycle, t
Note 13: C
Note 14: Diodes are 1N916 or equivalent.
Note 15: Differential propagation delays are calculated from single-ended propagation delays measured from driver input to the 20% and 80% levels on the driver
outputs (Figure 9) .
Note 16: On transceivers 1–3 the driver is loaded with receiver input conditions when DE/RE is high. Do not exceed the package power dissipation limit when
testing.
ra
CP
, T
= Crossing Point
rb
, T
fa
and T
L
includes probe and stray capacitance.
FIGURE 9. Propagation Delay Timing for Calculations of Driver Differential Propagation Delays
fb
are propagation delay measurements to the 20% and 80% levels.
7
(Continued)
01101418
r
and t
f
<
6.0 ns, Z
O
= 50Ω.
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