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| 型號： | SN74GTLP21395DWR |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | TWO 1-BIT LVTTL-TO-GTLP ADJUSTABLE-EDGE-RATE BUS TRANSCEIVERS WITH SPLIT LVTTL PORT, FEEDBACK PATH, AND SELECTABLE POLARITY |
| 中文描述： | 兩個1位LVTTL至GTLP可調(diào)EDGE的速率總線收發(fā)器與劈開LVTTL港口，反饋路徑，和可選的極性 |
| 文件頁數(shù)： | 11/21頁 |
| 文件大?。?/td> | 439K |
| 代理商： | SN74GTLP21395DWR |
SN74GTLP21395
TWO 1-BIT LVTTL-TO-GTLP ADJUSTABLE-EDGE-RATE BUS TRANSCEIVERS
WITH SPLIT LVTTL PORT FEEDBACK PATH, AND SELECTABLE POLARITY
SCES350C
–
JUNE 2001
–
REVISED NOVEMBER 2001
11
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
DISTRIBUTED-LOAD BACKPLANE SWITCHING CHARACTERISTICS
The preceding switching characteristics table shows the switching characteristics of the device into a lumped load
(Figure 1). However, the designer
’
s backplane application probably is a distributed load. The physical representation
is shown in Figure 2. This backplane, or distributed load, can be approximated closely to a resistor inductance
capacitance (RLC) circuit, as shown in Figure 3. This device has been designed for optimum performance in this RLC
circuit. The following switching characteristics table shows the switching characteristics of the device into the RLC
load, to help the designer better understand the performance of the GTLP device in the backplane. See
www.ti.com/sc/gtlp for more information.
Drvr
1.5 V
.25
”
1
”
1
”
1
”
1.5 V
1
”
1
”
1
”
.25
”
Rcvr
Rcvr
Rcvr
Figure 2. High-Drive Test Backplane
Slot 1
Slot 2
Slot 19
Slot 20
Conn.
Conn.
Conn.
Conn.
ZO = 50
2
2
From Output
Under Test
Test
Point
1.5 V
CL = 18 pF
11
LL = 14 nH
Figure 3. High-Drive RLC Network
switching characteristics over recommended operating conditions for the bus transceiver
function (unless otherwise noted) (see Figure 3)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
EDGE RATE
TYP
UNIT
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
A
B
Slow
4.3
ns
4.2
A
B
Fast
3.8
ns
3.4
A
Y
Slow
6.6
ns
6.5
A
Y
Fast
6
ns
6
tr
Rise time B outputs (20% to 80%)
Rise time, B outputs (20% to 80%)
Slow
1.5
ns
Fast
1
tf
Fall time B outputs (80% to 20%)
Fall time, B outputs (80% to 20%)
Slow
2.6
ns
Fast
2
Slow (ERC = H) and Fast (ERC = L)
All typical values are at VCC = 3.3 V, TA = 25
°
C. All values are derived from TI-SPICE models.
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|---|---|
| SN74GTLP21395GQNR | 功能描述:特定功能邏輯 Dual 1bit LVTTL-GTLP RoHS:否 制造商:Texas Instruments 產(chǎn)品: 系列:SN74ABTH18502A 工作電源電壓:5 V 封裝 / 箱體:LQFP-64 封裝:Tube |
| SN74GTLP21395PW | 功能描述:特定功能邏輯 2 1-Bit LVTTL/GTLP Bus Xcvr Adj-Eg-Rate RoHS:否 制造商:Texas Instruments 產(chǎn)品: 系列:SN74ABTH18502A 工作電源電壓:5 V 封裝 / 箱體:LQFP-64 封裝:Tube |
| SN74GTLP21395PWE4 | 功能描述:總線收發(fā)器 Quad Bus Buff Gate W/3-St Otpt RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel |
| SN74GTLP21395PWG4 | 功能描述:特定功能邏輯 Two 1B LVTTL GTLP Adj Edg RateBus Xcvr RoHS:否 制造商:Texas Instruments 產(chǎn)品: 系列:SN74ABTH18502A 工作電源電壓:5 V 封裝 / 箱體:LQFP-64 封裝:Tube |
| SN74GTLP21395PWR | 功能描述:轉(zhuǎn)換 - 電壓電平 Dual 1bit LVTTL-GTLP RoHS:否 制造商:Micrel 類型:CML/LVDS/LVPECL to LVCMOS/LVTTL 傳播延遲時間:1.9 ns 電源電流:14 mA 電源電壓-最大:3.6 V 電源電壓-最小:3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MLF-8 |
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