74HC9114 Datasheet, PDF (2/7 Pages) NXP Semiconductors – Nine wide Schmitt trigger buffer; open drain outputs; inverting

Philips Semiconductors
Nine wide Schmitt trigger buffer;
open drain outputs; inverting
Product specification
74HC/HCT9114
FEATURES
• Schmitt trigger action on all data inputs
• Output capability: standard (open drain)
• I_CC category: MSI
GENERAL DESCRIPTION
The 74HC/HCT9114 are high-speed Si-gate CMOS
devices and are pin compatible with low power Schottky
TTL (LSTTL). They are specified in compliance with
JEDEC standard no. 7A.
The 74HC/HCT9114 are nine wide Schmitt trigger
inverting buffer with open drain outputs and Schmitt trigger
inputs.
The Schmitt trigger action in the data inputs transform
slowly changing input signals into sharply defined
jitter-free output signals.
The 74HC/HCT9114 have open-drain N-transistor
outputs, which are not clamped by a diode connected to
V_CC. In the OFF-state, i.e. when one input is LOW, the
output may be pulled to any voltage between GND and
V_Omax. This allows the device to be used as a
LOW-to-HIGH or HIGH-to-LOW level shifter. For digital
operation and OR-tied output applications, these devices
must have a pull-up resistor to establish a logic HIGH level.
The “9114” is identical to the “9115” but has inverting
outputs.
QUICK REFERENCE DATA
GND = 0 V; T_amb = 25 °C; t_r = t_f = 6 ns
SYMBOL
PARAMETER
CONDITIONS
t_PHL/ t_PLZ
C_I
C_PD
propagation delay A_n to Y_n
input capacitance
power dissipation capacitance per buffer
C_L = 15 pF; V_CC = 5 V
notes 1 and 2
Notes
1. C_PD is used to determine the dynamic power dissipation (P_D in µW):
P_D = C_PD × V_CC2 × f_i + ∑ (C_L × V_CC2 × f_o) where:
f_i = input frequency in MHz
f_o = output frequency in MHz
∑ (C_L × V_CC2 × f_o) = sum of outputs
C_L = output load capacitance in pF
V_CC = supply voltage in V
2. For HC the condition is V_I = GND to V_CC
For HCT the condition is V_I = GND to V_CC − 1.5 V
ORDERING INFORMATION
See “74HC/HCT/HCU/HCMOS Logic Package Information”.
TYPICAL
HC
12
3.5
5
HCT
13
3.5
5
UNIT
ns
pF
pF
December 1990
2