74F756 Datasheet, PDF (7/12 Pages) NXP Semiconductors – Octal inverter buffer open-collector

Philips Semiconductors
Buffers
Product specification
74F756/74F757/74F760
AC ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
t_PLH
Propagation delay
t_PHL
Ian, Ibn to Yn
t_PLH
Propagation delay
t_PHL
OEn to Yn
t_PLH
Propagation delay
t_PHL
Ian, Ibn to Yn
t_PLH
Propagation delay
t_PHL
OEa or OEb to Yn
t_PLH
Propagation delay
t_PHL
Ian, Ibn to Yn
t_PLH
Propagation delay
t_PHL
OEn to Yn
74F756
74F757
74F760
TEST
CONDITION
Waveform 1, 2
Waveform 1, 2
Waveform 1, 2
Waveform 1, 2
Waveform 1, 2
Waveform 1, 2
LIMITS
T_amb = +25°C
V_CC = +5.0V
C_L = 50pF, R_L = 500Ω
MIN TYP MAX
T_amb = 0°C to +70°C
V_CC = +5.0V ± 10%
C_L = 50pF, R_L = 500Ω
MIN
MAX
8.5 11.0 14.0
8.5
15.0
1.0
3.0
6.0
1.0
6.5
9.0 11.5 14.5
9.0
15.0
5.0 7.0 10.0
4.5
10.5
7.5 10.5 13.5
7.5
14.0
3.0
5.5
8.5
3.0
9.0
9.0 10.5 15.0
8.5
16.0
4.5 7.0 10.0
4.0
10.5
7.5 10.0 13.5
7.5
14.0
3.5
5.5
8.5
3.0
9.0
9.5 11.5 14.5
9.0
15.0
5.0 7.0 10.5
4.5
10.5
UNIT
ns
ns
ns
ns
ns
ns
AC WAVEFORMS
For all waveforms, V_M = 1.5V.
Ian, Ibn, OEn _VM
t_PHL
V_M
t_PLH
Yn
V_M
V_M
SF01256
Waveform 1. Propagation Delay for Inverting Outputs
Ian, Ibn,
OEa, OEb
V_M
t_PLH
V_M
t_PHL
Yn
V_M
V_M
SF01257
Waveform 2. Propagation Delay for Non-invertIng Outputs
TYPICAL PROPAGATION DELAYS VERSUS LOAD FOR OPEN COLLECTOR OUTPUTS
18
16
14
t_PLH
12
10
PROPAGATION
DELAY (ns)
t_PHL
8
6
4
2
0
0
100
200
300
400
500
600
LOAD RESISTOR (W)
SF01258
NOTE:
When using open-collector parts, the value of the pull-up resistor greatly affects the value of the t_PLH. For example, changing the pull-up resistor
value from 500W to 100W will improve the t_PLH up to 50% with only slight increase in the t_PHL. However, if the pull-up resistor is changed, the
user must make certain that the total I_OL current through the resistor and the total I_IL’s of the receivers do not exceed the I_OL maximum
specification.
1989 Nov 27
7