參數(shù)資料
型號: SN74ABT646APWRE4
廠商: TEXAS INSTRUMENTS INC
元件分類: 總線收發(fā)器
英文描述: ABT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24
封裝: GREEN, PLASTIC, TSSOP-24
文件頁數(shù): 23/23頁
文件大?。?/td> 697K
代理商: SN74ABT646APWRE4
SN54ABT646A, SN74ABT646A
OCTAL BUS TRANSCEIVERS AND REGISTERS
WITH 3STATE OUTPUTS
SCBS069H JULY 1991 REVISED MAY 2004
9
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
1.5 V
th
tsu
From Output
Under Test
CL = 50 pF
(see Note A)
LOAD CIRCUIT
S1
7 V
Open
GND
500
500
Data Input
Timing Input
1.5 V
3 V
0 V
1.5 V
3 V
0 V
3 V
0 V
1.5 V
tw
Input
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
INVERTING AND NONINVERTING OUTPUTS
VOLTAGE WAVEFORMS
PULSE DURATION
tPLH
tPHL
tPLH
VOH
VOL
1.5 V
3 V
0 V
1.5 V
Input
1.5 V
Output
Control
Output
Waveform 1
S1 at 7 V
(see Note B)
Output
Waveform 2
S1 at Open
(see Note B)
VOL
VOH
tPZL
tPZH
tPLZ
tPHZ
1.5 V
3.5 V
0 V
1.5 V
VOL + 0.3 V
1.5 V
VOH 0.3 V
≈0 V
3 V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
LOW- AND HIGH-LEVEL ENABLING
Output
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: PRR
≤ 10 MHz, ZO = 50 , tr ≤ 2.5 ns, tf ≤ 2.5 ns.
D. The outputs are measured one at a time, with one transition per measurement.
E. All parameters and waveforms are not applicable to all devices.
1.5 V
Figure 2. Load Circuit and Voltage Waveforms
相關(guān)PDF資料
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SN74ABT646PWRG4 ABT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24
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