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SN74FB2031 数据表(PDF) 7 Page - Texas Instruments

部件名 SN74FB2031
功能描述  9-BIT TTL/BTL ADDRESS/DATA TRANSCEIVER
Download  13 Pages
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

SN74FB2031 数据表(HTML) 7 Page - Texas Instruments

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SN74FB2031
9-BIT TTL/BTL ADDRESS/DATA TRANSCEIVER
SCBS176N – NOVEMBER 1991 – REVISED JUNE 2001
7
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
From Output
Under Test
CL = 50 pF
(see Note A)
LOAD CIRCUIT FOR A OUTPUTS
S1
500
500
From Output
Under Test
LOAD CIRCUIT FOR B OUTPUTS
2.1 V
16.5
CL = 30 pF
(see Note A)
Test
Point
tPHL
tPLH
Output
3 V
0 V
VOH
VOL
Data Input
Timing Input
3 V
0 V
0 V
tPHL
tPLH
2 V
1 V
VOH
VOL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES (B TO A)
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES (A TO B)
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
Output
Control
Output
Waveform 1
S1 at 7 V
(see Note B)
Output
Waveform 2
S1 at Open
(see Note B)
VOL
VOH
tPLZ
tPZH
tPZL
tPHZ
3.5 V
0 V
VOL + 0.3 V
VOH – 0.3 V
≈0 V
3 V
tw
VOLTAGE WAVEFORMS
PULSE DURATION
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES (A PORT)
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
Open
7 V
Open
TEST
S1
NOTES: A. CL includes probe and jig capacitance.
B. 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.
C. All input pulses are supplied by generators having the following characteristics: TTL inputs: PRR
≤ 10 MHz, ZO = 50 Ω, tr ≤ 2.5 ns,
tf ≤ 2.5 ns; BTL inputs: PRR ≤ 10 MHz, ZO = 50 Ω, tr ≤ 2.5 ns, tf ≤ 2.5 ns.
D. The outputs are measured one at a time with one transition per measurement.
7 V
Open
1.5 V
1.5 V
1.5 V
3 V
0 V
1.5 V
1.5 V
Input
Input
1.5 V
1.5 V
1.55 V
1.55 V
Output
Input
1.5 V
1.5 V
1.55 V
1.55 V
1.5 V
1.5 V
1.5 V
1.5 V
3 V
GND
th
tsu
Figure 1. Load Circuits and Voltage Waveforms


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