74HC594 Datasheet, PDF (2/10 Pages) NXP Semiconductors – 8-bit shift register with output register

Philips Semiconductors
8-bit shift register with output register
Product specification
74HC/HCT594
FEATURES
• Synchronous serial input and output
• 8-bit parallel output
• Shift and storage register have independent direct clear
and clocks
• 100 MHz (typ.)
• Output capability:
– parallel outputs: bus driver
– serial outputs: standard
• I_CC category: MSI
APPLICATIONS
• Serial-to parallel data conversion
• Remote control holding register
DESCRIPTION
The 74HC/HCT594 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/HCT594 contain an 8-bit, non-inverting,
serial-in, parallel-out shift register that feeds an 8-bit
D-type storage register. Separate clocks and direct
overriding clears are provided on both the shift and storage
registers. A serial output (Q₇’) is provided for cascading
purposes.
Both the shift and storage register clocks are positive-edge
triggered. If the user wishes to connect both clocks
together, the shift register will always be one count pulse
ahead of the storage register.
QUICK REFERENCE DATA
GND = 0 V: T_amb = 250 C; t_r = t_f = 6 ns.
SYMBOL
PARAMETER
CONDITIONS
t_PHL/t_PLH
f_max
C_I
C_PD
propagation delay
SH_CP to Q₇’
ST_CP to Q_n
SH_R to Q_n
ST_R to Q_n
maximum clock frequency SH_CP, ST_CP
input capacitance
power dissipation capacitance per package
C_L = 15 pF; V_CC = 5 V
notes 1 and 2
TYPICAL
UNIT
HC HCT
13
15
ns
13
15
ns
11
14
ns
11
14
ns
100 100 MHz
3.5 3.5 pF
84
89
pF
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 the 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
EXTENDED TYPE NUMBER
PC74HC/HCT594P
PC74HC/HCT594T
PINS
16
16
PACKAGES
PIN POSITION
DIL
SO
MATERIAL
plastic
plastic
CODE
SOT38C, P
SOT109A
December 1991
2