參數(shù)資料
型號(hào)： 74LVC32244AEC
廠商： NXP SEMICONDUCTORS
元件分類： 通用總線功能
英文描述： 32-bit buffer/line driver; 5 V input/output tolerant; 3-state
中文描述： LVC/LCX/Z SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, PBGA96
封裝： 13.50 X 5.50 X 1.05 MM, PLASTIC, SOT-536-1, LFBGA-96
文件頁(yè)數(shù)： 2/16頁(yè)
文件大?。?/td> 76K
代理商： 74LVC32244AEC
1999 Aug 31
2
Philips Semiconductors
Product specification
32-bit buffer/line driver; 5 V input/output
tolerant; 3-state
74LVC32244A;
74LVCH32244A
FEATURES
5 V tolerant inputs/outputs for interfacing with 5 V logic
Wide supply voltage range of 1.2 to 3.6 V
CMOS low power consumption
MULTIBYTE
flow-trough standard pin-out architecture
Low inductance multiple power and ground pins for
minimum noise and ground bounce
Direct interface with TTL levels
Bus hold on data inputs (74LVCH32244A only)
Typical output ground bounce voltage:
V
OLP
<0.8 V at V
CC
= 3.3 V; T
amb
= 25
°
C
Typical output V
OH
undershoot voltage:
V
OHV
>2 V at V
CC
= 3.3 V; T
amb
= 25
°
C
Power-off disabled outputs, permitting live insertion
Plastic fine-pitch ball grid array package.
DESCRIPTION
The 74LVC(H)32244A is a high-performance, low-power,
low-voltage, Si-gate CMOS device, superior to most
advanced CMOS compatible TTL families. Inputs can be
driven from either 3.3 or 5 V devices. In 3-state operation,
outputs can handle 5 V. These features allow the use of
these devices in a mixed 3.3 and 5 V environment.
The 74LVC(H)32244A is a 32-bit non-inverting buffer/line
driver with 3-state outputs. The 3-state outputs are
controlled by the output enable inputs 1OE and 2OE.
A HIGH on input nOE causes the outputs to assume a
high-impedance OFF-state.
To ensure the high-impedance state during power-up or
power-down, input nOE should be tied to V
CC
through a
pull-up resistor; the minimum value of the resistor is
determined by the current-sinking capability of the driver.
The 74LVCH32244A bus hold data input circuit eliminates
the need for external pull-up resistors to hold unused or
floating data inputs at a valid logic level (see Fig.3).
QUICK REFERENCE DATA
Ground = 0 V; T
amb
= 25
°
C; t
r
= t
f
≤
2.5 ns.
Note
1.
C
PD
is used to determine the dynamic power dissipation (P
D
in
μ
W).
P
D
= C
PD
×
V
CC2
×
f
i
+
Σ
(C
L
×
V
CC2
×
f
o
) where:
f
i
= input frequency in MHz;
f
o
= output frequency in MHz;
C
L
= output load capacitance in pF;
V
CC
= supply voltage in Volts;
Σ
(C
L
×
V
CC2
×
f
o
) = sum of the outputs.
SYMBOL
PARAMETER
CONDITIONS
TYPICAL
UNIT
t
PHL
/t
PLH
C
I
C
PD
propagation delay nA
n
to nY
n
input capacitance
power dissipation capacitance per buffer
C
L
= 50 pF; V
CC
= 3.3 V
3.0
5.0
25
ns
pF
pF
V
I
= GND to V
CC
; note 1
相關(guān)PDF資料
PDF描述
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74LVCH32245A 32-bit bus transceiver with direction pin;5-volt tolerant(3-State)(具有定向引腳的5V輸入/輸出容限的32位總線收發(fā)器（三態(tài)）)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
74LVC32245AEC 功能描述:總線收發(fā)器 32-BIT 5V TOL I/O BUFFER TRAN 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
74LVC32245AEC,518 功能描述:總線收發(fā)器 32-BIT 5V TOL I/O 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
74LVC32245AEC,551 功能描述:總線收發(fā)器 32-BIT 5V TOL I/O 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
74LVC32245AEC,557 功能描述:總線收發(fā)器 32-BIT 5V TOL I/O 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
74LVC32245AEC-S 功能描述:總線收發(fā)器 32-BIT 5V TOL I/O BUFFER TRAN 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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