MAX3292CPD 데이터 시트보기 (PDF) - Maxim Integrated
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MAX3292CPD
Maxim Integrated
MAX3292CPD Datasheet PDF : 16 Pages
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RS-485/RS-422 Transceivers with Preemphasis
for High-Speed, Long-Distance Communication
Pin Description
PIN
MAX3291 MAX3292
1
—
—
1
2
2
3
3
4
4
5
5
6, 8, 13
8
7
6, 7
9
9
10
10
11
11
12
12
—
13
14
14
NAME
PEE
PSET
RO
RE
DE
DI
N.C.
GND
Y
Z
B
A
VCCD
VCC
FUNCTION
Preemphasis Enable Input. To enable preemphasis, leave PEE unconnected, connect to
VCC, or drive high. To enable strong-level-drive only mode, connect PEE to GND or drive
low.
Preemphasis Set Input. Sets the preemphasis interval. Connect a resistor (RPSET) in paral-
lel with a capacitor (CPSET) from PSET to VCC to set the preemphasis interval. See Typical
Operating Circuit.
Receiver Output. When RE is low and if A - B ≥ 200mV, RO is high; if A - B ≤ -200mV, RO
is low.
Receiver Output Enable. Drive RE low to enable RO; RO is high impedance when RE is
high. Drive RE high and DE low to enter low-power shutdown mode.
Driver Output Enable. Drive DE high to enable the driver outputs. These outputs are high
impedance when DE is low. Drive RE high and DE low to enter low-power shutdown mode.
Driver Input. With DE high, a low on DI forces the noninverting output low and the inverting
output high. Similarly, a high on DI forces the noninverting output high and the inverting
output low.
No Connection. Not internally connected.
Ground
Noninverting Driver Output
Inverting Driver Output
Inverting Receiver Input
Noninverting Receiver Input
Connect to VCC
Positive Supply: +4.75V ≤ VCC ≤ +5.25V
Y
VOD
VODP
Z
R
R
VOC
OUTPUT
UNDER TEST
RL
CL
VCC
S1
S2
Figure 1. Driver DC Test Load
Figure 2. Driver or Receiver Enable/Disable Timing Test Load
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