74HC7541 Datasheet, PDF (5/7 Pages) NXP Semiconductors – Octal Schmitt trigger buffer/line driver; 3-state

Philips Semiconductors
Octal Schmitt trigger buffer/line driver; 3-state
Product specification
74HC/HCT7541
DC CHARACTERISTICS FOR 74HC
For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Transfer characteristics are given below (not applicable for OE_n inputs).
Output capability: bus driver
I_CC category: MSI
AC CHARACTERISTICS FOR 74HC
GND = 0 V; t_r = t_f = 6 ns; C_L = 50 pF
T_amb (°C)
TEST CONDITIONS
SYMBOL PARAMETER
74HC
+25
−40 to +85
−40 to +125
UNIT
V_CC
(V)
WAVEFORMS
min. typ. max. min. max. min. max.
t_PHL/ t_PLH propagation delay
A_n to Y_n
39 120
150
180 ns 2.0 Fig.8
14 24
30
36
4.5
11 20
26
32
6.0
t_PZH/ t_PZL 3-state output enable time
44 160
200
240 ns 2.0 Fig.8
OE_n to Y_n
16 32
40
48
4.5
13 27
34
41
6.0
t_PHZ/ t_PLZ 3-state output disable time
58 160
200
240 ns 2.0 Fig.8
OE_n to Y_n
21 32
40
48
4.5
17 27
34
41
6.0
t_THL/ t_TLH output transition time
14 60
75
90 ns 2.0 Fig.8
5 12
15
18
4.5
4 10
13
15
6.0
TRANSFER CHARACTERISTICS FOR 74HC
Voltages are referred to GND (ground = 0 V)
T_amb (°C)
TEST CONDITIONS
SYMBOL PARAMETER
74HC
+25
−40 to +85
−40 to +125
UNIT
V_CC
(V)
WAVEFORMS
min. typ. max. min. max. min. max.
V_T+
positive-going threshold
1.50
1.50
3.15
3.15
4.20
4.20
1.50 V
3.15
4.20
2.0 Figs 6 and 7
4.5
6.0
V_T−
negative-going threshold 0.30
1.35
1.80
0.30
0.30
V 2.0 Figs 6 and 7
1.35
1.35
4.5
1.80
1.80
6.0
V_H
hysteresis (V_T+ − V_T−) 0.10 0.20
0.10
0.25 0.40
0.25
0.30 0.50
0.30
0.10
V 2.0 Figs 6 and 7
0.25
4.5
0.30
6.0
December 1990
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