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54ABT16244 데이터시트 PDF




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부품번호 54ABT16244 기능
기능 16-Bit Buffer/Line Driver with TRI-STATE Outputs
제조업체 National Semiconductor
로고 National Semiconductor 로고


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54ABT16244 데이터시트, 핀배열, 회로
July 1998
54ABT16244
16-Bit Buffer/Line Driver with TRI-STATE® Outputs
General Description
The ’ABT16244 contains sixteen non-inverting buffers with
TRI-STATE outputs designed to be employed as a memory
and address driver, clock driver, or bus oriented transmitter/
receiver. The device is nibble controlled. Individual
TRI-STATE control inputs can be shorted together for 8-bit or
16-bit operation.
Features
n Separate control logic for each nibble
n 16-bit version of the ’ABT244
n Outputs sink capability of 48 mA, source capability of
24 mA
n Guaranteed output skew
n Guaranteed multiple output switching specifications
n Output switching specified for both 50 pF and 250 pF
loads
n Guaranteed simultaneous switching noise level and
dynamic threshold performance
n Guaranteed latchup protection
n High impedance glitch free bus loading during entire
power up and power down cycle
n Non-destructive hot insertion capability
n Standard Microcircuit Drawing (SMD) 5962-9317402
Ordering Code:
Military
54ABT16244W-QML
Logic Symbol
Package
Number
WA48A
48-Lead Cerpack
Package Description
Connection Diagram
Pin Assignment for Cerpack
Pin Description
DS100223-1
Pin Names
OEn
I0– I15
O0– O15
Description
Output Enable Inputs (Active Low)
Inputs
Outputs
TRI-STATE® is a registered trademark of National Semiconductor Corporation.
© 1998 National Semiconductor Corporation DS100223
DS100223-2
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54ABT16244 pdf, 반도체, 판매, 대치품
DC Electrical Characteristics
Symbol
Parameter
Min
Max
Units
VOLP
VOLV
Quiet Output Maximum Dynamic VOL
Quiet Output Minimum Dynamic VOL
1.1
-0.45
Note 4: Max number of outputs defined as (n). n − 1 data inputs are driven 0V to 3V. One output at LOW.
V
V
Conditions
VCC
CL = 50 pF,
RL = 500
5.0 TA = 25˚C (Note 4)
5.0 TA = 25˚C(Note 4)
AC Electrical Characteristics
Symbol
Parameter
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
Propagation
Delay Data
to Outputs
Output Enable
Time
Output Disable
Time
54ABT
TA = −55˚C to +125˚C
VCC = 4.5V–5.5V
CL = 50 pF
Min Max
0.5 5.3
0.5 5.9
1.5 6.8
1.5 7.0
1.5 7.7
1.5 6.5
Units
ns
ns
ns
Capacitance
Symbol
Parameter
Typ
CIN Input Capacitance
COUT (Note 5)
Output Capacitance
Note 5: COUT is measured at frequency f = 1 MHz; per MIL STD-883B, Method 3012.
5.0
9.0
Units
pF
pF
Conditions
TA = 25˚C
VCC = 5.0V
VCC = 5.0V
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54ABT16244 전자부품, 판매, 대치품
Capacitance (Continued)
tPZL vs Load Capacitance
16 Outputs Switching, TA = 25˚C
tPZH vs Load Capacitance
16 Outputs Switching, TA = 25˚C
DS100223-26
tPLH and tPHL vs Number Output Switching
VCC = 5.0V, TA = 25˚C, CL = 50 pF
DS100223-27
ICC vs Frequency Average,
TA = 25˚C, VCC = 5.5V
DS100223-28
DS100223-29
Dashed lines represent design characteristics; for specified guarantees, refer to AC Characteristics Tables.
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