參數(shù)資料
型號(hào)： SN54LS245
廠商： Motorola, Inc.
英文描述： Quad 2-Input Multiplexer; Package: PDIP-16; No of Pins: 16; Container: Rail; Qty per Container: 500
中文描述： 八進(jìn)制總線收發(fā)器
文件頁(yè)數(shù)： 5/15頁(yè)
文件大小： 513K
代理商： SN54LS245
SN54LS245, SN74LS245
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SDLS146A
–
OCTOBER 1976
–
REVISED FEBRUARY 2002
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
SERIES 54LS/74LS 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
5 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. Phase relationships between inputs and outputs have been chosen arbitrarily for these examples.
F. All input pulses are supplied by generators having the following characteristics: PRR
≤
1 MHz, ZO
≈
50
, tr
≤
1.5 ns, tf
≤
2.6 ns.
G. 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
VOL
≈
1.5 V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES, 3-STATE OUTPUTS
1.3 V
1.3 V
1.3 V
1.3 V
1.3 V
1.3 V
1.3 V
1.3 V
1.3 V
1.3 V
1.3 V
tw
1.3 V
1.3 V
1.3 V
1.3 V
1.3 V
1.3 V
VOH
Figure 1. Load Circuits and Voltage Waveforms
相關(guān)PDF資料
PDF描述
SN54LS245J OCTAL BUS TRANSCEIVER
SN54LS275 4 BIT BY 4 BIT BINARY MULTIPLER WITH 3-STATE OUTPUTS
SN54S274 4 BIT BY 4 BIT BINARY MULTIPLER WITH 3-STATE OUTPUTS
SN54S275 4 BIT BY 4 BIT BINARY MULTIPLER WITH 3-STATE OUTPUTS
SN74LS275 4 BIT BY 4 BIT BINARY MULTIPLER WITH 3-STATE OUTPUTS
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SN54LS245J 制造商:Texas Instruments 功能描述:Bus XCVR Single 8-CH 3-ST 20-Pin CDIP Tube 制造商:Texas Instruments 功能描述:BUS XCVR SGL 8CH 3-ST 20CDIP - Rail/Tube 制造商:Texas Instruments 功能描述:OCTAL BUS TRANSCEIVER*NIC* 制造商:Texas Instruments 功能描述:Octal transceiver,SN54LS245J CERDIP20
SN54LS251J 制造商:Texas Instruments 功能描述:Multiplexer 1-Element Bipolar 3-ST 8-IN 16-Pin CDIP Tube 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述:MLTPLXR 1-ELEM BIPOLAR 3-ST 8-IN 16CDIP - Rail/Tube
SN54LS253J 制造商:Texas Instruments 功能描述: 制造商:Texas Instruments 功能描述:DUAL 4-TO-1 MUX (3-STATE) - Rail/Tube
SN54LS257AJ 制造商:Motorola Inc 功能描述:LOGIC MUX, QUAD, 2-INPUT, LS-TTL, 16 Pin, Ceramic, DIP 制造商:Texas Instruments 功能描述:LOGIC MUX, QUAD, 2-INPUT, LS-TTL, 16 Pin, Ceramic, DIP
SN54LS257BJ 制造商:Texas Instruments 功能描述:Multiplexer 1-Element Bipolar 3-ST 8-IN 16-Pin CDIP Tube
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