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參數資料
| 型號： | M74HC648M1R |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 總線收發器 |
| 英文描述： | HC/UH SERIES, 8-BIT REGISTERED TRANSCEIVER, INVERTED OUTPUT, PDSO24 |
| 封裝： | SOP-24 |
| 文件頁數： | 1/15頁 |
| 文件大小： | 549K |
| 代理商： | M74HC648M1R |
1/15
April 2003
s
HIGH SPEED:
fMAX = 79 MHz (TYP.) at VCC = 6V
s
LOW POWER DISSIPATION:
ICC = 4A(MAX.) at TA=25°C
s
HIGH NOISE IMMUNITY:
VNIH = VNIL = 28 % VCC (MIN.)
s
SYMMETRICAL OUTPUT IMPEDANCE:
|IOH| = IOL = 6mA (MIN)
s
BALANCED PROPAGATION DELAYS:
tPLH tPHL
s
WIDE OPERATING VOLTAGE RANGE:
VCC (OPR) = 2V to 6V
s
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 648
DESCRIPTION
The 74HC648 is an advanced high-speed CMOS
OCTAL BUS TRANSCEIVER AND REGISTER
(3-STATE) fabricated with silicon gate C2MOS
technology.
This device 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 register on the low to high transition of the
appropriate clock pin (Clock AB or Clock BA).
Enable (G) and direction (DIR) pins are provided
to control
the
transceiver
functions. In the
transceiver
mode,
data
present
at
the
high-impedance port may be stored in either
register or in both. The select controls (Select AB
select BA) can multiplex stored and real time
(transparent mode) data. The direction control
determines which bus will receive data when
enable G is active (low). In the isolation mode
(enable G high), "A" data may be stored in one
register and/or "B" data may be stored in the other
register. When an output function is disabled, the
input function is still enabled and may be used to
store and transmit data. Only one of the two
buses, A or B, may be driven at a time.
All inputs are equipped with protection circuits
against static discharge and transient excess
voltage.
M74HC648
OCTAL BUS TRANSCEIVER/REGISTER
WITH 3 STATE OUTPUTS (INVERTING)
PIN CONNECTION AND IEC LOGIC SYMBOLS
ORDER CODES
PACKAGE
TUBE
T & R
DIP
M74HC648B1R
SOP
M74HC648M1R
M74HC648RM13TR
TSSOP
M74HC648TTR
TSSOP
DIP
SOP
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相關代理商/技術參數 |
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| M74HC652M1R | 制造商:STMicroelectronics 功能描述:Bus XCVR Single 8-CH 3-ST 24-Pin SOP Tube |
| M74HC670B1R | 功能描述:寄存器 4WordX4Bit Reg File RoHS:否 制造商:NXP Semiconductors 邏輯類型:CMOS 邏輯系列:HC 電路數量:1 最大時鐘頻率:36 MHz 傳播延遲時間: 高電平輸出電流:- 7.8 mA 低電平輸出電流:7.8 mA 電源電壓-最大:6 V 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-38 封裝:Tube |
| M74HC670M1R | 功能描述:寄存器 4WordX4Bit Reg File RoHS:否 制造商:NXP Semiconductors 邏輯類型:CMOS 邏輯系列:HC 電路數量:1 最大時鐘頻率:36 MHz 傳播延遲時間: 高電平輸出電流:- 7.8 mA 低電平輸出電流:7.8 mA 電源電壓-最大:6 V 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-38 封裝:Tube |
| M74HC670RM13TR | 制造商:STMicroelectronics 功能描述: |
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