參數(shù)資料
型號： 74F544SPC
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 通用總線功能
英文描述： Octal Registered Transceiver
中文描述： F/FAST SERIES, 8-BIT REGISTERED TRANSCEIVER, INVERTED OUTPUT, PDIP24
封裝： 0.300 INCH, SLIM, PLASTIC, DIP-24
文件頁數(shù)： 2/16頁
文件大?。?/td> 119K
代理商： 74F544SPC
Philips Semiconductors
Product specification
74F543, 74F544
Octal registered transceivers
74F543
74F544
Octal registered transceiver, non-inverting (3-State)
Octal registered transceiver, inverting 93-State)
2
1994 Dec 5
853-0874 14379
FEATURES
Combines74F245 and 74F373 type functions in one chip
8-bit octal transceiver with D-type latch
74F543 Non-inverting
74F544 Inverting
Back-to-back registers for storage
Separate controls for data flow in each direction
A outputs sink 20mA and source 3mA
B outputs sink 64mA and source 15mA
3-State outputs for bus-oriented applications
74F543 available in SSOP Type II package
DESCRIPTION
The 74F543 and 74F544 Octal Registered Transceivers contain two
sets of D-type latches for temporary storage of data flowing in either
direction. Separate Latch Enable (LEAB, LEBA) and Output Enable
(OEAB, OEBA) inputs are provided for each register to permit
independent control of inputting and outputting in either direction of
data flow. While the 74F543 has non-inverting data path, the 74F544
inverts data in both directions. The A outputs are guaranteed to sink
24mA, while the B outputs are rated for 64mA.
FUNCTIONAL DESCRIPTION
The 74F543 and 74F544 contain two sets of eight D-type latches,
with separate input and controls for each set. For data flow from A to
B, for example, the A-to-B Enable (EAB) input must be Low in order
to enter data from A0 - A7 or take data from B0 - B7, as indicated in
the Function Table. With EAB Low, a Low signal on the A-to-B Latch
Enable (LEAB) input makes the A-to-B latches transparent; a
subsequent Low-to-High transition for the LEAB signal puts the
A latches in the storage mode and their outputs no longer change
with the A inputs. With EAB and OEAB both Low, the 3-State
B output buffers are active and display the data present at the
outputs of the A latches. Control of data flow from B to A is similar,
but using the EBA, LEBA, and OEBA inputs.
TYPE
TYPICAL
PROPAGATION
DELAY
TYPICAL
SUPPLY CURRENT
(TOTAL)
74F543
6.0ns
80mA
74F544
6.5ns
95mA
ORDERING INFORMATION
DESCRIPTION
COMMERCIAL RANGE
V
CC
= 5V
±
10%,
T
A
= 0
°
C to +70
°
C
DRAWING
NUMBER
24-pin plastic skinny DIP (300mil)
N74F543N,
N74F544N
SOT222–1
24-pin plastic SOL
N74F543D,
N74F544D
SOT137-1
24-pin plastic SSOP Type II
74F543DB
SOT340-1
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS
DESCRIPTION
74F(U.L.)
HIGH/LOW
LOAD VALUE
HIGH/LOW
A0 - A7
Port A, 3-State inputs
3.5/1.0
70
μ
A/0.6mA
B0 - B7
Port B, 3-State inputs
3.5/1.0
70
μ
A/0.6mA
20
μ
A/0.6mA
20
μ
A/0.6mA
20
μ
A/1.2mA
20
μ
A/1.2mA
20
μ
A/0.6mA
20
μ
A/0.6mA
OEAB
A-to-B Output Enable input (Active Low)
1.0/1.0
74F543
74F544
OEBA
B-to-A Output Enable input (Active Low)
1.0/1.0
EAB
A-to-B Enable input (Active Low)
1.0/2.0
EBA
B-to-A Enable input (Active Low)
1.0/2.0
LEAB
A-to-B Latch Enable input (Active Low)
1.0/1.0
LEBA
B-to-A Latch Enable input (Active Low)
1.0/1.0
74F543
A0 - A7
Port A, 3-State outputs
150/40
3.0mA/24mA
B0 - B7
Port B, 3-State outputs
750/106.7
15mA/64mA
74F544
A0 - A7
Port A, 3-State outputs
150/40
3.0mA/24mA
B0 - B7
Port B, 3-State outputs
750/106.7
15mA/64mA
NOTE:
One (1.0) FAST Unit Load is defined as: 20
μ
A in the High State and 0.6mA in the Low state.
相關PDF資料
PDF描述
74F543MSA Octal Registered Transceiver
74F543SPC Octal Registered Transceiver
74F544SC Octal Registered Transceiver
74F543 Octal Registered Transceiver
74F543SC Octal Registered Transceiver
相關代理商/技術參數(shù)
參數(shù)描述
74F545 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Octal Bidirectional Transceiver with TRI-STATEE Outputs
74F545_TJH3026B WAF 制造商:Fairchild Semiconductor Corporation 功能描述:
74F545DC 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Single 8-bit Bus Transceiver
74F545PC 功能描述:總線收發(fā)器 Octal Bidir Trans 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
74F545SC 功能描述:總線收發(fā)器 Octal Bidir Trans 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
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