NSC DS90CR216AMTD

DS90CR286A/DS90CR216A
+3.3V Rising Edge Data Strobe LVDS Receiver 28-Bit
Channel Link— 66 MHz, +3.3V Rising Edge Strobe
LVDS Receiver 21-Bit Channel Link— 66 MHz
General Description
Features
The DS90CR286A receiver converts the four LVDS data
streams (Up to 1.848 Gbps throughput or 231 Megabytes/
sec bandwidth) back into parallel 28 bits of CMOS/TTL data.
Also available is the DS90CR216A that converts the three
LVDS data streams (Up to 1.386 Gbps throughput or 173
Megabytes/sec bandwidth) back into parallel 21 bits of
CMOS/TTL data. Both Receivers’ outputs are Rising edge
strobe.
This chipset is an ideal means to solve EMI and cable size
problems associated with wide, high speed TTL interfaces.
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20 to 66 MHz shift clock support
50% duty cycle on receiver output clock
Best–in–Class Set & Hold Times on RxOUTPUTs
Rx power consumption < 270 mW (typ) @66MHz Worst
Case
Rx Power-down mode < 200µW (max)
ESD rating > 7 kV (HBM), > 700V (EIAJ)
PLL requires no external components
Compatible with TIA/EIA-644 LVDS standard
Low profile 56-lead or 48-lead TSSOP package
Operating Temperature: −40˚C to +85˚C
Block Diagrams
DS90CR286A
DS90CR216A
DS100873-31
Order Number DS90CR216AMTD
See NS Package Number MTD48
DS100873-30
Order Number DS90CR286AMTD
See NS Package Number MTD56
TRI-STATE ® is a registered trademark of National Semiconductor Corporation.
© 2000 National Semiconductor Corporation
DS100873
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DS90CR286A/DS90CR216A +3.3V Rising Edge Data Strobe LVDS Receiver 28-Bit Channel
Link — 66 MHz, +3.3V Rising Edge Data Strobe LVDS Receiver 21-Bit Channel Link— 66 MHz
June 1999
DS90CR286A/DS90CR216A
Absolute Maximum Ratings (Note 1)
Package Derating:
DS90CR286A
DS90CR216A
ESD Rating
(HBM, 1.5 kΩ, 100 pF)
(EIAJ, 0Ω, 200 pF)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage (VCC)
−0.3V to +4V
CMOS/TTL Output Voltage
−0.3V to (VCC + 0.3V)
LVDS Receiver Input Voltage
−0.3V to (VCC + 0.3V)
Junction Temperature
+150˚C
Storage Temperature
−65˚C to +150˚C
Lead Temperature
(Soldering, 4 sec)
+260˚C
Maximum Package Power Dissipation Capacity @ 25˚C
MTD56 (TSSOP) Package:
DS90CR286A
1.61 W
MTD48 (TSSOP) Package:
DS90CR216A
1.89 W
12.4 mW/˚C above +25˚C
15 mW/˚C above +25˚C
> 7 kV
> 700V
Recommended Operating
Conditions
Supply Voltage (VCC)
Operating Free Air
Temperature (TA)
Receiver Input Range
Supply Noise Voltage (VCC)
Min
3.0
Nom
3.3
Max
3.6
−40
0
+25
+85
2.4
100
Units
V
˚C
V
mVPP
Electrical Characteristics
Over recommended operating supply and temperature ranges unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
CMOS/TTL DC SPECIFICATIONS
VOH
High Level Output Voltage
IOH = −0.4 mA
VOL
Low Level Output Voltage
IOL = 2 mA
0.06
0.3
V
IOS
Output Short Circuit Current
VOUT = 0V
−60
−120
mA
2.7
3.3
V
LVDS RECEIVER DC SPECIFICATIONS
VTH
Differential Input High Threshold
VTL
Differential Input Low Threshold
I IN
Input Current
V
CM
= +1.2V
+100
−100
V
IN
= +2.4V, VCC = 3.6V
V
IN
= 0V, VCC = 3.6V
mV
mV
± 10
± 10
µA
µA
RECEIVER SUPPLY CURRENT
ICCRW
ICCRW
ICCRW
ICCRW
ICCRZ
Receiver Supply Current Worst Case
Receiver Supply Current Worst Case
Receiver Supply Current Worst Case
Receiver Supply Current Worst Case
CL = 8 pF, Worst
Case Pattern,
DS90CR286A (Figures
1, 2 ), TA=−10˚C to
+70˚C
f = 33 MHz
49
65
mA
f = 37.5 MHz
53
70
mA
f = 66 MHz
81
105
mA
CL = 8 pF, Worst
Case Pattern,
DS90CR286A (Figures
1, 2 ), TA=−40˚C to
+85˚C
f = 40 MHz
53
70
mA
f = 66 MHz
81
105
mA
CL = 8 pF, Worst
Case Pattern,
DS90CR216A (Figures
1, 2 ), TA=−10˚C to
+70˚C
f = 33 MHz
49
55
mA
f = 37.5 MHz
53
60
mA
f = 66 MHz
78
90
mA
CL = 8 pF, Worst
Case Pattern,
DS90CR216A (Figures
1, 2 ), TA=−40˚C to
+85˚C
f = 40 MHz
53
60
mA
f = 66 MHz
78
90
mA
10
55
µA
Receiver Supply Current
Power Down = Low
Power Down
Receiver Outputs Stay Low during
Power Down Mode
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(Continued)
Note 1: “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the device
should be operated at these limits. The tables of “Electrical Characteristics” specify conditions for device operation.
Note 2: Typical values are given for VCC = 3.3V and TA = +25C.
Note 3: Current into device pins is defined as positive. Current out of device pins is defined as negative. Voltages are referenced to ground unless otherwise specified (except VOD and ∆V OD).
Receiver Switching Characteristics
Over recommended operating supply and temperature ranges unless otherwise specified
Symbol
Parameter
CLHT
CMOS/TTL Low-to-High Transition Time (Figure 2 )
CHLT
CMOS/TTL High-to-Low Transition Time (Figure 2 )
RSPos0
Receiver Input Strobe Position for Bit 0 (Figure 9,
Figure 10)
RSPos1
RSPos2
Min
Typ
Max
Units
2
5
ns
1.8
5
ns
1.0
1.4
2.15
ns
Receiver Input Strobe Position for Bit 1
4.5
5.0
5.8
ns
Receiver Input Strobe Position for Bit 2
8.1
8.5
9.15
ns
RSPos3
Receiver Input Strobe Position for Bit 3
11.6
11.9
12.6
ns
RSPos4
Receiver Input Strobe Position for Bit 4
15.1
15.6
16.3
ns
RSPos5
Receiver Input Strobe Position for Bit 5
18.8
19.2
19.9
ns
RSPos6
Receiver Input Strobe Position for Bit 6
22.5
22.9
23.6
ns
RSPos0
Receiver Input Strobe Position for Bit 0 (Figure 9,
Figure 10)
0.7
1.1
1.4
ns
RSPos1
Receiver Input Strobe Position for Bit 1
2.9
3.3
3.6
ns
RSPos2
Receiver Input Strobe Position for Bit 2
5.1
5.5
5.8
ns
RSPos3
Receiver Input Strobe Position for Bit 3
7.3
7.7
8.0
ns
RSPos4
Receiver Input Strobe Position for Bit 4
9.5
9.9
10.2
ns
RSPos5
Receiver Input Strobe Position for Bit 5
11.7
12.1
12.4
ns
RSPos6
Receiver Input Strobe Position for Bit 6
13.9
14.3
14.6
ns
RSKM
RxIN Skew Margin (Note 4) (Figure 11 )
RCOP
f = 40 MHz
f = 66 MHz
f = 40 MHz
490
f = 66 MHz
400
RxCLK OUT Period (Figure 3)
15
ps
ps
T
50
ns
RCOH
RxCLK OUT High Time (Figure 3 )
10.0
12.2
ns
RCOL
RxCLK OUT Low Time (Figure 3)
10.0
11.0
ns
RSRC
RxOUT Setup to RxCLK OUT (Figure 3 )
6.5
11.6
ns
RHRC
RxOUT Hold to RxCLK OUT (Figure 3 )
6.0
11.6
ns
f = 40 MHz
RCOH
RxCLK OUT High Time (Figure 3 )
5.0
7.6
ns
RCOL
RxCLK OUT Low Time (Figure 3)
5.0
6.3
ns
RSRC
RxOUT Setup to RxCLK OUT (Figure 3 )
4.5
7.3
ns
RHRC
RxOUT Hold to RxCLK OUT (Figure 3 )
4.0
6.3
RCCD
RxCLK IN to RxCLK OUT Delay 25˚C, VCC = 3.3V (Note 5)(Figure 4 )
3.5
5.0
f = 66 MHz
ns
7.5
ns
RPLLS
Receiver Phase Lock Loop Set (Figure 5 )
10
ms
RPDD
Receiver Power Down Delay (Figure 8 )
1
µs
Note 4: Receiver Skew Margin is defined as the valid data sampling region at the receiver inputs. This margin takes into account the transmitter pulse positions (min
and max) and the receiver input setup and hold time (internal data sampling window - RSPos). This margin allows for LVDS interconnect skew, inter-symbol interference (both dependent on type/length of cable), and clock jitter (less than 250 ps).
Note 5: Total latency for the channel link chipset is a function of clock period and gate delays through the transmitter (TCCD) and receiver (RCCD). The total latency
for the 215/285 transmitter and 216A/286A receiver is: (T + TCCD) + (2*T + RCCD), where T = Clock period.
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DS90CR286A/DS90CR216A
Electrical Characteristics
DS90CR286A/DS90CR216A
AC Timing Diagrams
DS100873-2
FIGURE 1. “Worst Case” Test Pattern
DS100873-4
FIGURE 2. DS90CR286A/DS90CR216A (Receiver) CMOS/TTL Output Load and Transition Times
DS100873-5
FIGURE 3. DS90CR286A/DS90CR216A (Receiver) Setup/Hold and High/Low Times
DS100873-6
FIGURE 4. DS90CR286A/DS90CR216A (Receiver) Clock In to Clock Out Delay
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DS90CR286A/DS90CR216A
AC Timing Diagrams
(Continued)
DS100873-7
FIGURE 5. DS90CR286A/DS90CR216A (Receiver) Phase Lock Loop Set Time
DS100873-9
FIGURE 6. 28 Parallel TTL Data Inputs Mapped to LVDS Outputs - DS90CR286A
DS100873-10
FIGURE 7. 21 Parallel TTL Data Inputs Mapped to LVDS Outputs - DS90CR216A
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DS90CR286A/DS90CR216A
AC Timing Diagrams
(Continued)
DS100873-8
FIGURE 8. DS90CR286A/DS90CR216A (Receiver) Power Down Delay
DS100873-25
FIGURE 9. DS90CR286A (Receiver) LVDS Input Strobe Position
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DS90CR286A/DS90CR216A
AC Timing Diagrams
(Continued)
DS100873-26
FIGURE 10. DS90CR216A (Receiver) LVDS Input Strobe Position
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DS90CR286A/DS90CR216A
AC Timing Diagrams
(Continued)
DS100873-11
C — Setup and Hold Time (Internal data sampling window) defined by Rspos (receiver input strobe position) min and max
Tppos — Transmitter output pulse position (min and max)
RSKM = Cable Skew (type, length) + Source Clock Jitter (cycle to cycle) (Note 6) + ISI (Inter-symbol interference) (Note 7)
Cable Skew — typically 10 ps–40 ps per foot, media dependent
Note 6: Cycle-to-cycle jitter is less than TBD ps at 66 MHz.
Note 7: ISI is dependent on interconnect length; may be zero.
FIGURE 11. Receiver LVDS Input Skew Margin
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I/O
No.
RxIN+
Pin Name
I
4
Positive LVDS differentiaI data inputs.
Description
RxIN−
I
4
Negative LVDS differential data inputs.
RxOUT
O
28
RxCLK IN+
I
1
Positive LVDS differential clock input.
RxCLK IN−
I
1
Negative LVDS differential clock input.
RxCLK OUT
O
1
TTL Ievel clock output. The rising edge acts as data strobe.
PWR DOWN
I
1
TTL level input. When asserted (low input) the receiver outputs are low.
V CC
I
4
Power supply pins for TTL outputs.
GND
I
5
Ground pins for TTL outputs.
PLL V CC
I
1
Power supply for PLL.
PLL GND
I
2
Ground pin for PLL.
LVDS V CC
I
1
Power supply pin for LVDS inputs.
LVDS GND
I
3
Ground pins for LVDS inputs.
TTL level data outputs.
DS90CR216A Pin Description — 21-Bit Channel Link Receiver
I/O
No.
Description
RxIN+
Pin Name
I
3
Positive LVDS differentiaI data inputs. (Note 8)
RxIN−
I
3
Negative LVDS differential data inputs. (Note 8)
RxOUT
O
21
RxCLK IN+
I
1
Positive LVDS differential clock input.
RxCLK IN−
I
1
Negative LVDS differential clock input.
RxCLK OUT
O
1
TTL Ievel clock output. The rising edge acts as data strobe.
PWR DOWN
I
1
TTL level input. When asserted (low input) the receiver outputs are low.
V CC
I
4
Power supply pins for TTL outputs.
GND
I
5
Ground pins for TTL outputs.
PLL V CC
I
1
Power supply for PLL.
PLL GND
I
2
Ground pin for PLL.
LVDS V CC
I
1
Power supply pin for LVDS inputs.
LVDS GND
I
3
Ground pins for LVDS inputs.
TTL level data outputs.
Note 8: These receivers have input failsafe bias circuitry to guarantee a stable receiver output for floating or terminated receiver inputs. Under these conditions receiver inputs will be in a HIGH state. If a clock signal is present, outputs will all be HIGH; if the clock input is also floating/terminated outputs will remain in the last
valid state. A floating/terminated clock input will result in a LOW clock output.
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DS90CR286A/DS90CR216A
DS90CR286A Pin Description — 28-Bit Channel Link Receiver
DS90CR286A/DS90CR216A
Pin Diagram
DS90CR286A
DS90CR216A
DS100873-13
DS100873-23
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DS90CR286A/DS90CR216A
Physical Dimensions
inches (millimeters) unless otherwise noted
56-Lead Molded Thin Shrink Small Outline Package, JEDEC
Order Number DS90CR286AMTD
NS Package Number MTD56
11
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DS90CR286A/DS90CR216A +3.3V Rising Edge Data Strobe LVDS Receiver 28-Bit Channel
Link — 66 MHz, +3.3V Rising Edge Data Strobe LVDS Receiver 21-Bit Channel Link— 66 MHz
Physical Dimensions
inches (millimeters) unless otherwise noted (Continued)
48-Lead Molded Thin Shrink Small Outline Package, JEDEC
Order Number DS90CR216AMTD
NS Package Number MTD48
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