- 您现在的位置：买卖IC网 > PDF目录26831 > ML65T541CS (FAIRCHILD SEMICONDUCTOR CORP) 8-BIT DRIVER, TRUE OUTPUT, PDSO20 PDF资料下载
参数资料
| 型号： | ML65T541CS |
| 厂商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分类： | 总线收发器 |
| 英文描述： | 8-BIT DRIVER, TRUE OUTPUT, PDSO20 |
| 封装： | SOIC-20 |
| 文件页数： | 5/8页 |
| 文件大小： | 104K |
| 代理商： | ML65T541CS |
ML65T541
REV. 1.0 10/25/2000
5
FUNCTIONAL DESCRIPTION
The ML65T541 is a very high speed non-inverting buffer/
line driver with three-state outputs which is ideally suited
for bus-oriented applications. It provides a low propagation
delay by using an analog design approach (a high speed
unity gain buffer), as compared to conventional digital
approaches. The ML65T541 follows the pinout and
functionality of the industry standard FCT541 series of
buffers/line drivers and is intended to replace them in
designs where the propagation delay is a critical part of
the system design considerations. The ML65T541 is capable
of driving load capacitances several times larger than its
input capacitance. It is configured so that the Ai inputs go
to the Bi outputs when enabled by OE1/OE2
These unity gain analog buffers achieve low propagation
delays by having the output follow the input with a small
offset. When the output reaches one VBE off the rail, the
PMOS pull-up is activated to drive the output the rest of
the way. All inputs and outputs have Schottky clamp diodes
to handle undershoot or overshoot noise suppression in
unterminated applications. All outputs have ground
bounce suppression (typically < 400mV), high drive
output capability with almost immediate response to the
input signal, and low output skew.
The IOL current drive capability of a buffer/line driver is
often interpreted as a measure of its ability to sink current
in a dynamic sense. This may be true for CMOS buffer/
line drivers, but it is not true for the ML65T541. This is
because their sink and source current capability depends
on the voltage difference between the output and the input.
The ML65T541 can sink or source more than 100mA to a
load when the load is switching due to the fact that
during the transition, the difference between the input and
output is large. IOL is only significant as a DC
specification, and is 5mA.
Architectural Description
Until now, buffer/line drivers have been implemented in
CMOS logic and made to be TTL compatible by sizing
the input devices appropriately. In order to buffer large
capacitances with CMOS logic, it is necessary to
cascade an even number of inverters, each successive
inverter larger than the preceding, eventually leading to
an inverter that will drive the required load capacitance at
the required frequency. Each inverter stage represents an
additional delay in the gating process because in order for
a single gate to switch, the input must slew more than
half of the supply voltage. The best of these CMOS
buffers has managed to drive a 50pF load capacitance
with a delay of 3.2ns. Micro Linear has produced a dual
quad buffer/line driver with a delay of less than 2ns by
using a unique circuit architecture that does not require
cascaded logic gates. The ML65T541 uses a feedback
technique to produce an output that follows the input. If
the output voltage is not close to the input, then the
feedback circuitry will source or sink enough current to
the load capacitance to correct the discrepancy.
The basic architecture of the ML65T541 is shown in
Figure 5. It is implemented on a 1.5m BiCMOS process.
Figure 5. One buffer cell of the ML65T541
Q1
IN
OUT
Q2
M1
Q7
R2
R6
R5
GND
R4
Q4
Q3
R1
R8
R3
Q5
Q6
R7
VCC
INV
相关PDF资料 |
PDF描述 |
|---|---|
| MM4025D | 4000/14000/40000 SERIES, 1024-BIT RIGHT SERIAL IN SERIAL OUT SHIFT REGISTER, TRUE OUTPUT, CDIP16 |
| MM5025D | 1024-BIT RIGHT SERIAL IN SERIAL OUT SHIFT REGISTER, TRUE OUTPUT, CDIP16 |
| MM4057D | 4000/14000/40000 SERIES, 512-BIT RIGHT SERIAL IN SERIAL OUT SHIFT REGISTER, TRUE OUTPUT, CDIP8 |
| MM54C08J | TTL/H/L SERIES, QUAD 2-INPUT AND GATE, CDIP14 |
| MM54C107JMIL | CMOS SERIES, DUAL NEGATIVE EDGE TRIGGERED J-K FLIP-FLOP, COMPLEMENTARY OUTPUT, CDIP14 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ML6622 | 制造商:MICRO-LINEAR 制造商全称:MICRO-LINEAR 功能描述:High-Speed Data Quantizer |
| ML6622CS | 制造商:MICRO-LINEAR 制造商全称:MICRO-LINEAR 功能描述:High-Speed Data Quantizer |
| ML6622IS | 制造商:MICRO-LINEAR 制造商全称:MICRO-LINEAR 功能描述:High-Speed Data Quantizer |
| ML6633 | 制造商:MICRO-LINEAR 制造商全称:MICRO-LINEAR 功能描述:High Speed Fiber Optic LED Driver |
| ML6633CS | 制造商:MICRO-LINEAR 制造商全称:MICRO-LINEAR 功能描述:High Speed Fiber Optic LED Driver |
发布紧急采购，3分钟左右您将得到回复。