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參數(shù)資料
| 型號(hào)： | CGS2537TV |
| 文件頁數(shù)： | 4/6頁 |
| 文件大?。?/td> | 103K |
| 代理商： | CGS2537TV |
CGS2534/35/36/37
Memory Array Driving
In order to minimize the total load on the address bus, quite
often memory arrays are being driven by buffers while hav-
ing the inputs of the buffers tied together. Although this
practice was feasible in the conventional memory designs,
in today’s high speed, large buswidth designs which require
address fetching at higher speeds, this technique produces
many undesired results such as cross-talk and over/under-
shoot.
CGS2534/35/36/37 Quad 1 to 4 Clock Drivers were de-
signed specifically to address these application issues on
high speed, large memory arrays systems.
These drivers are optimized to driver large loads, with 3.5 ns
propagation delays. These drivers produce less noise while
reducing the total capacitive loading on the address bus by
having only four inputs tied together (see the diagram be-
low, point A). This helps to minimize the overshoot and un-
dershoot by having only four outputs being switched simul-
taneously.
Also this larger fan-out helps to save board space since for
every one of these drivers, two conventional buffers were
typically being used.
Another feature associated with these clock drivers is a
250 ps–500 ps pin-to-pin skew specification. The minimum
skew specification allows high speed memory system de-
signers to optimize the performance of their memory sub-
system by operating at higher frequencies without having
concerns about output-to-output (bank-to-bank) synchroni-
zation problem which are associated with driving high ca-
pacitive loads (Point B).
The diagram below depicts a ‘‘2534/35/36/37’’ a memory
subsystem operating at high speed with large memory ca-
pacity. The address bus is common to both the memory and
the CPU and I/Os.
These drivers can operate beyond 150 MHz, and are also
available in 3V–5V TTL/CMOS versions with large current
drive .
Device
V
CC
I/O
Output Configuration
2534
5
TTL
Inverting quad 1–4
2535
3 or 5
CMOS
Non-inverting quad 1–4
2536
3 or 5
CMOS
Inverting, Non-inverting,
a
2
2537
5
TTL
Inverting quad 1–4 with series 8
X
output resistors
TL/F/11957–5
4
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| CGS2537V | |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CGS2537V | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| CGS253T200X8L | 功能描述:鋁質(zhì)電解電容器-螺旋式接線端 25000uF 200V-10+50% RoHS:否 制造商:Cornell Dubilier 電容:2400 uF 容差:- 10 %, + 50 % 電壓額定值:450 V ESR:38 mOhms 工作溫度范圍:- 40 C to + 85 C 系列:CGS 直徑:76 mm (3 in) 長度:143 mm (5.625 in) 引線間隔:31.75 mm (1.25 in) 產(chǎn)品:Computer Grade Electrolytic Capacitors |
| CGS253U016R4C | 功能描述:鋁質(zhì)電解電容器-螺旋式接線端 16V 25000UF ELEC CAP RoHS:否 制造商:Cornell Dubilier 電容:2400 uF 容差:- 10 %, + 50 % 電壓額定值:450 V ESR:38 mOhms 工作溫度范圍:- 40 C to + 85 C 系列:CGS 直徑:76 mm (3 in) 長度:143 mm (5.625 in) 引線間隔:31.75 mm (1.25 in) 產(chǎn)品:Computer Grade Electrolytic Capacitors |
| CGS253U016V2C | 功能描述:鋁質(zhì)電解電容器-螺旋式接線端 25000uF 16V-10+75% RoHS:否 制造商:Cornell Dubilier 電容:2400 uF 容差:- 10 %, + 50 % 電壓額定值:450 V ESR:38 mOhms 工作溫度范圍:- 40 C to + 85 C 系列:CGS 直徑:76 mm (3 in) 長度:143 mm (5.625 in) 引線間隔:31.75 mm (1.25 in) 產(chǎn)品:Computer Grade Electrolytic Capacitors |
| CGS253U020U3L3PL | 制造商:Mallory 功能描述:CGEL020X325 |
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