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參數(shù)資料
| 型號(hào)： | 74ABT646CMTC |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 通用總線功能 |
| 英文描述： | Octal Transceivers and Registers with 3-STATE Outputs |
| 中文描述： | ABT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24 |
| 封裝： | 4.40 MM, MO-153, TSSOP-24 |
| 文件頁數(shù)： | 1/9頁 |
| 文件大?。?/td> | 97K |
| 代理商： | 74ABT646CMTC |
1999 Fairchild Semiconductor Corporation
DS010978
www.fairchildsemi.com
April 1992
Revised November 1999
7
74ABT646
Octal Transceivers and Registers with 3-STATE Outputs
General Description
The ABT646 consists of bus transceiver circuits with 3-
STATE, D-type flip-flops, and control circuitry arranged for
multiplexed transmission of data directly from the input bus
or from the internal registers. Data on the A or B bus will be
clocked into the registers as the appropriate clock pin goes
to a high logic level. Control OE and direction pins are pro-
vided to control the transceiver function. In the transceiver
mode, data present at the high impedance port may be
stored in either the A or the B register or in both. The select
controls can multiplex stored and real-time (transparent
mode) data. The direction control determines which bus
will receive data when the enable control OE is Active
LOW. In the isolation mode (control OE HIGH), A data may
be stored in the B register and/or B data may be stored in
the A register.
Features
I
Independent registers for A and B buses
I
Multiplexed real-time and stored data
I
A and B output sink capability of 64 mA, source capabil-
ity of 32 mA
I
Guaranteed output skew
I
Guaranteed multiple output switching specifications
I
Output switching specified for both 50 pF and 250 pF
loads
I
Guaranteed simultaneous switching noise level and
dynamic threshold performance
I
Guaranteed latchup protection
I
High impedance glitch free bus loading during entire
power up and power down cycle
I
Nondestructive hot insertion capability
Ordering Code:
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
Connection Diagram
Pin Descriptions
Order Number
74ABT646CSC
74ABT646CMSA
74ABT646CMTC
Package Number
M24B
MSA24
MTC24
Package Description
24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-153, 4.4mm Wide
24-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide
24-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Pin Names
Description
A
0
–
A
7
B
0
–
B
7
CPAB, CPBA
Data Register A Inputs/3-STATE Outputs
Data Register B Inputs/3-STATE Outputs
Clock Pulse Inputs
SAB, SBA
Select Inputs
OE
Output Enable Input
DIR
Direction Control Input
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74ABT646CMTCX | 功能描述:總線收發(fā)器 Octal Trans and Reg 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(shí)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 |
| 74ABT646CSC | 功能描述:總線收發(fā)器 Octal Trans and Reg 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(shí)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 |
| 74ABT646CSCX | 功能描述:總線收發(fā)器 Octal Trans and Reg 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(shí)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 |
| 74ABT648D | 功能描述:總線收發(fā)器 OCTAL REGISTERED XCVR INV 3-S 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(shí)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 |
| 74ABT648D,602 | 功能描述:總線收發(fā)器 OCTAL REGISTERED 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(shí)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 |
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