參數(shù)資料
型號: SN54LS126AFK
廠商: Texas Instruments, Inc.
英文描述: QUADRUPLE BUS BUFFERS WITH 3-STATE OUTPUTS
中文描述: 翻兩番總線緩沖器,具有三態(tài)輸出
文件頁數(shù): 7/18頁
文件大?。?/td> 580K
代理商: SN54LS126AFK
SN54125, SN54126, SN54LS125A, SN54LS126A,
SN74125, SN74126, SN74LS125A, SN74LS126A
QUADRUPLE BUS BUFFERS WITH 3-STATE OUTPUTS
SDLS044A
DECEMBER 1983
REVISED MARCH 2002
7
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
SERIES 54/74 DEVICES
tPHL
tPLH
tPLH
tPHL
LOAD CIRCUIT
FOR 3-STATE OUTPUTS
High-Level
Pulse
Low-Level
Pulse
VOLTAGE WAVEFORMS
PULSE DURATIONS
Input
Out-of-Phase
Output
(see Note D)
3 V
0 V
VOL
VOH
VOH
VOL
In-Phase
Output
(see Note D)
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
VCC
RL
Test
Point
From Output
Under Test
CL
(see Note A)
LOAD CIRCUIT
FOR OPEN-COLLECTOR OUTPUTS
LOAD CIRCUIT
FOR 2-STATE TOTEM-POLE OUTPUTS
(see Note B)
VCC
RL
From Output
Under Test
CL
(see Note A)
Test
Point
(see Note B)
VCC
RL
From Output
Under Test
CL
(see Note A)
Test
Point
1 k
NOTES: A. CL includes probe and jig capacitance.
B. All diodes are 1N3064 or equivalent.
C. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
D. S1 and S2 are closed for tPLH, tPHL, tPHZ, and tPLZ; S1 is open and S2 is closed for tPZH; S1 is closed and S2 is open for tPZL.
E. All input pulses are supplied by generators having the following characteristics: PRR
1 MHz, ZO
50
; tr and tf
7 ns for Series
54/74 devices and tr and tf
2.5 ns for Series 54S/74S devices.
F. The outputs are measured one at a time with one input transition per measurement.
S1
S2
tPHZ
tPLZ
tPZL
tPZH
3 V
3 V
0 V
0 V
th
tsu
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
Timing
Input
Data
Input
3 V
0 V
Output
Control
(low-level
enabling)
Waveform 1
(see Notes C
and D)
Waveform 2
(see Notes C
and D)
1.5 V
VOH
0.5 V
VOL + 0.5 V
1.5 V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES, 3-STATE OUTPUTS
1.5 V
1.5 V
1.5 V
1.5 V
1.5 V
1.5 V
1.5 V
1.5 V
1.5 V
1.5 V
1.5 V
tw
1.5 V
1.5 V
1.5 V
1.5 V
1.5 V
1.5 V
VOH
VOL
Figure 1. Load Circuits and Voltage Waveforms
The SN54125, SN54126, SN74125,
SN74126, and SN54LS126A are
obsolete and are no longer supplied.
相關(guān)PDF資料
PDF描述
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SN54LS126AW QUADRUPLE BUS BUFFERS WITH 3-STATE OUTPUTS
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SNJ54128 LINE DRIVERS
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