參數(shù)資料
型號： SN74GTLPH16945VR
廠商： Texas Instruments, Inc.
英文描述： 16-BIT LVTTL-TO-GTLP BUS TRANSCEIVER
中文描述： 16位LVTTL至GTLP總線收發(fā)器
文件頁數(shù)： 1/13頁
文件大小： 212K
代理商： SN74GTLPH16945VR
SN74GTLPH16945
16-BIT LVTTL-TO-GTLP BUS TRANSCEIVER
SCES292D – OCTOBER 1999 – REVISED NOVEMBER 2001
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Member of the Texas Instruments
Widebus
Family
TI-OPC
Circuitry Limits Ringing on
Unevenly Loaded Backplanes
OEC
Circuitry Improves Signal Integrity
and Reduces Electromagnetic Interference
Bidirectional Interface Between GTLP
Signal Levels and LVTTL Logic Levels
LVTTL Interfaces Are 5-V Tolerant
Medium-Drive GTLP Outputs (50 mA)
LVTTL Outputs (–24 mA/24 mA)
GTLP Rise and Fall Times Designed for
Optimal Data-Transfer Rate and Signal
Integrity in Distributed Loads
I
off
, Power-Up 3-State, and BIAS V
CC
Support Live Insertion
Bus Hold on A-Port Data Inputs
Distributed V
CC
and GND Pins Minimize
High-Speed Switching Noise
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
description
The SN74GTLPH16945 is a medium-drive, 16-bit
bus transceiver that provides LVTTL-to-GTLP and
GTLP-to-LVTTL signal-level translation. It is
partitioned as two 8-bit transceivers. The device
provides a high-speed interface between cards
operating at LVTTL logic levels and a backplane operating at GTLP signal levels. High-speed (about three times
faster than standard TTL or LVTTL) backplane operation is a direct result of GTLP’s reduced output swing
(<1 V), reduced input threshold levels, improved differential input, OEC
circuitry, and TI-OPC
circuitry.
Improved GTLP OEC and TI-OPC circuits minimize bus-settling time and have been designed and tested using
several backplane models. The medium drive allows incident-wave switching in heavily loaded backplanes with
equivalent load impedance down to 19
.
GTLP is the Texas Instruments derivative of the Gunning Transceiver Logic (GTL) JEDEC standard JESD 8-3.
The ac specification of the SN74GTLPH16945 is given only at the preferred higher noise margin GTLP, but the
user has the flexibility of using this device at either GTL (V
TT
= 1.2 V and V
REF
= 0.8 V) or GTLP (V
TT
= 1.5 V
and V
REF
= 1 V) signal levels.
Normally, the B port operates at GTLP signal levels. The A-port and control inputs operate at LVTTL logic levels
but are 5-V tolerant and are compatible with TTL and 5-V CMOS inputs. V
REF
is the B-port differential input
reference voltage.
Copyright
2001, Texas Instruments Incorporated
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
OEC, TI-OPC, and Widebus are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
DGG OR DGV PACKAGE
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1DIR
1A1
1A2
GND
1A3
1A4
V
CC
1A5
1A6
GND
1A7
1A8
2A1
2A2
GND
2A3
2A4
V
CC
2A5
2A6
GND
2A7
2A8
2DIR
1OE
1B1
1B2
GND
1B3
1B4
BIAS V
CC
1B5
1B6
GND
1B7
1B8
2B1
2B2
GND
2B3
2B4
V
REF
2B5
2B6
GND
2B7
2B8
2OE
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相關代理商/技術參數(shù)
參數(shù)描述
SN74GTLPH306DGVR 功能描述:轉換 - 電壓電平 8bit 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 安裝風格:SMD/SMT 封裝 / 箱體:MLF-8
SN74GTLPH306DW 功能描述:轉換 - 電壓電平 8-Bit LVTTL-to-GTLP Bus Transceiver 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 安裝風格:SMD/SMT 封裝 / 箱體:MLF-8
SN74GTLPH306DWG4 功能描述:轉換 - 電壓電平 8B LVTTL to GTLP Bus Transceiver 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 安裝風格:SMD/SMT 封裝 / 箱體:MLF-8
SN74GTLPH306DWR 功能描述:轉換 - 電壓電平 8bit 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 安裝風格:SMD/SMT 封裝 / 箱體:MLF-8
SN74GTLPH306DWRE4 功能描述:轉換 - 電壓電平 Triple 2-Ch Analog Mltplxr/Demltplxr 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 安裝風格:SMD/SMT 封裝 / 箱體:MLF-8
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